{"title":"Dirt Bike Air Filters - O2 Rush","description":"\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2Rush_A4_Flyer_1.png?v=1793572318\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cbr\u003e\u003c\/p\u003e","products":[{"product_id":"o2-rush-beta-rr-125cc-480cc-enduro-2st-4st-20-on-air-filter","title":"O2 Rush BETA RR 125cc - 480cc Enduro 2ST \u0026 4ST 20-ON Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: BETA RR 125cc - 480cc Enduro 2ST \u0026amp; 4ST 20-ON Compatible years: 2020, 2021, 2022, 2023, 2024, 2025, 2026.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213766435051,"sku":"O2R 4802","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R_4802.jpg?v=1786678644"},{"product_id":"o2-rush-ducati-desmo450-mx-25-on-air-filter","title":"O2 Rush DUCATI DESMO450 25-ON Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: DUCATI DESMO450 25-ON Compatible years: 2025, 2026.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213767844075,"sku":"O2R 5308","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R5308.png?v=1786678646"},{"product_id":"o2-rush-gas-gas-all-07-16-air-filter","title":"O2 Rush GAS GAS EC 125\/200\/250F\/250\/300\/450 07-16 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: GAS GAS EC 125\/200\/250F\/250\/300\/450 07-16 Compatible years: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213768204523,"sku":"O2R 3401","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R3401_fa509fea-dab2-44e7-8d62-7c851d7e4d0c.png?v=1786678728"},{"product_id":"o2-rush-gas-gas-all-99-02-air-filter","title":"O2 Rush GAS GAS ALL 99-02 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: GAS GAS ALL 99-02 Compatible years: 1999, 2000, 2001, 2002.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213768597739,"sku":"O2R 4115","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4115_17223d1e-1837-4000-983b-59e10f7d211f.png?v=1786678684"},{"product_id":"o2-rush-gas-gas-ec-200-250-300-xc-200-250-300-19-on-air-filter","title":"O2 Rush GAS GAS EC\/XC 200\/250\/300 19-ON Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: GAS GAS EC\/XC 200\/250\/300 19-ON Compatible years: 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213770301675,"sku":"O2R 9601","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R_9601_237b6679-c5fc-4162-8955-7fa157febd1a.jpg?v=1786678588"},{"product_id":"o2-rush-gas-gas-ec-all-models-21-23-air-filter","title":"O2 Rush GAS GAS EC All Models 21-23 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: GAS GAS EC All Models 21-23 Compatible years: 2021, 2022, 2023.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213770858731,"sku":"O2R 1452","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R_1452_2bfa2824-5e77-4e03-821e-0b798fb31523.jpg?v=1786678882"},{"product_id":"o2-rush-gas-gas-ec-all-models-24-on-air-filter","title":"O2 Rush GAS GAS EC 250F\/250\/300\/350\/450 \/ MC 125\/250\/250F\/350\/450 24-ON Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: GAS GAS EC 250F\/250\/300\/350\/450 \/ MC 125\/250\/250F\/350\/450 24-ON Compatible years: 2024, 2025, 2026.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213771481323,"sku":"O2R 1455","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R1455_0d20a056-43c1-479e-bff0-18912db66a2b.png?v=1786678861"},{"product_id":"o2-rush-gas-gas-mc-50-21-23-air-filter","title":"O2 Rush GAS GAS MC 50 21-23 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: GAS GAS MC 50 21-23 Compatible years: 2021, 2022, 2023.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213771743467,"sku":"O2R 1424","price":19.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R_1424_51e6d2c0-226e-4be1-81b8-c8b16643b45e.png?v=1786678887"},{"product_id":"o2-rush-gas-gas-mc-50-24-on-air-filter","title":"O2 Rush GAS GAS MC 50 24-ON Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: GAS GAS MC 50 24-ON Compatible years: 2024, 2025, 2026.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213772693739,"sku":"O2R 1458","price":39.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R1458_ee6936e3-1b6d-4399-a2a5-c507154096a6.png?v=1786678839"},{"product_id":"o2-rush-gas-gas-mc-65-21-on-air-filter","title":"O2 Rush GAS GAS MC 65 21-23 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: GAS GAS MC 65 21-23 Compatible years: 2021, 2022, 2023.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213772955883,"sku":"O2R 1413","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R1413.png?v=1786678921"},{"product_id":"o2-rush-gas-gas-mc-85-21-on-air-filter","title":"O2 Rush GAS GAS MC 85 21-ON Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: GAS GAS MC 85 21-ON Compatible years: 2021, 2022, 2023, 2024, 2025, 2026.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213773185259,"sku":"O2R 1453","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R1453_8126caa1-2ace-4495-8118-cd4652f874cd.png?v=1786678868"},{"product_id":"o2-rush-gas-gas-mc-all-models-125cc-over-21-23-air-filter","title":"O2 Rush GAS GAS MC All Models 125cc \u0026 over 21-23 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: GAS GAS MC All Models 125cc \u0026amp; over 21-23 Compatible years: 2021, 2022, 2023.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213773676779,"sku":"O2R 1452","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R_1452.jpg?v=1786678881"},{"product_id":"o2-rush-gas-gas-mc-all-models-125cc-over-24-0n-air-filter","title":"O2 Rush GAS GAS MC All Models 125cc \u0026 over 24-0N Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: GAS GAS MC All Models 125cc \u0026amp; over 24-0N Compatible years: 2024, 2025, 2026.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213774135531,"sku":"O2R 1455","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R1455.png?v=1786678859"},{"product_id":"o2-rush-honda-cr-125-02-11-air-filter","title":"O2 Rush HONDA CR 125\/250 2-STROKE \/ CR125 02-11 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 125\/250 2-STROKE \/ CR125 02-11 Compatible years: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213774594283,"sku":"O2R 4118","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4118_e97be7ec-a077-48c4-b6cd-5de9f4d13eeb.png?v=1786678680"},{"product_id":"o2-rush-honda-cr-125-81-84-air-filter","title":"O2 Rush HONDA CR 125 81-84 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 125 81-84 Compatible years: 1981, 1982, 1983, 1984.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213774856427,"sku":"O2R 4052","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4052_1d83514c-f96b-4688-a073-e312e5416175.png?v=1786678703"},{"product_id":"o2-rush-honda-cr-125-86-air-filter","title":"O2 Rush HONDA CR 125 86 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 125 86 Compatible years: 1986.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213775347947,"sku":"O2R 4103","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/uni-filter-red_882fb093-3299-48e3-8b43-a588f73edafd.png?v=1786678693"},{"product_id":"o2-rush-honda-cr-125-87-92-air-filter","title":"O2 Rush HONDA CR 125 87-92 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 125 87-92 Compatible years: 1987, 1988, 1989, 1990, 1991, 1992.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213775642859,"sku":"O2R 4105","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4105_b2d62231-12a6-4649-8e66-53de1161ec93.png?v=1786678688"},{"product_id":"o2-rush-honda-cr-125-93-01-air-filter","title":"O2 Rush HONDA CR 125\/250 2-STROKE 93-01 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 125\/250 2-STROKE 93-01 Compatible years: 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213775872235,"sku":"O2R 4115","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4115.png?v=1786678683"},{"product_id":"o2-rush-honda-cr-250-02-11-air-filter","title":"O2 Rush HONDA CR 125\/250 2-STROKE \/ CR250 02-11 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 125\/250 2-STROKE \/ CR250 02-11 Compatible years: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213776101611,"sku":"O2R 4118","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4118.png?v=1786678679"},{"product_id":"o2-rush-honda-cr-250-81-84-air-filter","title":"O2 Rush HONDA CR 250 81-84 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 250 81-84 Compatible years: 1981, 1982, 1983, 1984.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213776298219,"sku":"O2R 4052","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4052.png?v=1786678701"},{"product_id":"o2-rush-honda-cr-250-85-air-filter","title":"O2 Rush HONDA CR 250 85 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 250 85 Compatible years: 1985.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213776560363,"sku":"O2R 4078","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/uni-filter-red_7610683d-0300-4f93-a4e1-c2d17cf43955.png?v=1786678699"},{"product_id":"o2-rush-honda-cr-250-86-air-filter","title":"O2 Rush HONDA CR 250 86 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 250 86 Compatible years: 1986.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213776789739,"sku":"O2R 4103","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/uni-filter-red_cd67897b-0414-4d89-a7bd-738c2e15086b.png?v=1786678692"},{"product_id":"o2-rush-honda-cr-250-87-air-filter","title":"O2 Rush HONDA CR 250 87 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 250 87 Compatible years: 1987.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213777019115,"sku":"O2R 4105","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4105.png?v=1786678687"},{"product_id":"o2-rush-honda-cr-250-88-91-air-filter","title":"O2 Rush HONDA CR 125\/250 2-STROKE \/ CR250 88-91 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 125\/250 2-STROKE \/ CR250 88-91 Compatible years: 1988, 1989, 1990, 1991.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213777281259,"sku":"O2R 4112","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4112_784350fe-c55b-436c-9435-97f743f4eb17.png?v=1786678685"},{"product_id":"o2-rush-honda-cr-250-92-01-air-filter","title":"O2 Rush HONDA CR 125\/250 2-STROKE 92-01 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 125\/250 2-STROKE 92-01 Compatible years: 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213777477867,"sku":"O2R 4115","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4115_cffb9221-04b2-4698-9338-01cd532f0e5d.png?v=1786678682"},{"product_id":"o2-rush-honda-cr-450-480-500-81-94-air-filter","title":"O2 Rush HONDA CR450 \/ CR480 \/ CR500 81-94 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR450 \/ CR480 \/ CR500 81-94 Compatible years: 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213777707243,"sku":"O2R 4052","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4052_3d90aec6-20b3-4372-9f49-ac0d868b705e.png?v=1786678701"},{"product_id":"o2-rush-honda-cr-500-85-air-filter","title":"O2 Rush HONDA CR 500 85 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 500 85 Compatible years: 1985.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213777969387,"sku":"O2R 4078","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/uni-filter-red_5b075ef4-0515-48d2-b72d-f54cb3553312.png?v=1786678698"},{"product_id":"o2-rush-honda-cr-500-86-air-filter","title":"O2 Rush HONDA CR 500 86 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 500 86 Compatible years: 1986.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213778198763,"sku":"O2R 4103","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/uni-filter-red_d41d86e6-7593-45b8-a0ea-b7ce172354bd.png?v=1786678691"},{"product_id":"o2-rush-honda-cr-500-87-88-air-filter","title":"O2 Rush HONDA CR 500 87-88 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 500 87-88 Compatible years: 1987, 1988.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213778428139,"sku":"O2R 4105","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4105_5c45c147-4794-42e0-92e9-d54e76d6412d.png?v=1786678686"},{"product_id":"o2-rush-honda-cr-500-89-00-air-filter","title":"O2 Rush HONDA CR 500 89-00 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR 500 89-00 Compatible years: 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213778690283,"sku":"O2R 4112","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4112.png?v=1786678685"},{"product_id":"o2-rush-honda-cr-80-86-02-air-filter","title":"O2 Rush HONDA CR80R 86-02 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR80R 86-02 Compatible years: 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213778919659,"sku":"O2R 4104","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/uni-filter-red_e964ac90-de3b-4dd3-b12d-2acd40141733.png?v=1786678690"},{"product_id":"o2-rush-honda-cr-85-03-15-air-filter","title":"O2 Rush HONDA CR85R 03-15 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CR85R 03-15 Compatible years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213779149035,"sku":"O2R 4104","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/uni-filter-red_9b1d301e-dd41-4a5b-b457-ae1c7a3a89da.png?v=1786678689"},{"product_id":"o2-rush-honda-crf-100-04-13-air-filter","title":"O2 Rush HONDA CRF80F \/ CRF100F 04-13 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF80F \/ CRF100F 04-13 Compatible years: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213779411179,"sku":"O2R 4120","price":19.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R_4120_61b43e96-3be0-4fd2-887e-a55e283bad68.png?v=1786678674"},{"product_id":"o2-rush-honda-crf-110-13-18-air-filter","title":"O2 Rush HONDA CRF110F 13-18 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF110F 13-18 Compatible years: 2013, 2014, 2015, 2016, 2017, 2018.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213779706091,"sku":"O2R 4140","price":19.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R_4140_b6a5cdf2-5e06-47fb-bcd6-e0952452fad1.png?v=1786678652"},{"product_id":"o2-rush-honda-crf-110-19-on-air-filter","title":"O2 Rush HONDA CRF110F 19-ON Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF110F 19-ON Compatible years: 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213779935467,"sku":"O2R 4141","price":19.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R_4141_6e86e256-fe59-4b5d-b08a-57be294c1333.png?v=1786678651"},{"product_id":"o2-rush-honda-crf-150-03-16-air-filter","title":"O2 Rush HONDA CRF 150 03-16 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF 150 03-16 Compatible years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213780492523,"sku":"O2R 4122","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4122_94d3a54b-7366-423a-9513-5b96d3d6c25f.png?v=1786678671"},{"product_id":"o2-rush-honda-crf-150r-07-16-air-filter","title":"O2 Rush HONDA CRF150R \/ CRF150RB 07-ON Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF150R \/ CRF150RB 07-ON Compatible years: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213780754667,"sku":"O2R 4123","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4123_36c23ee7-8142-42a7-b10b-6818a76db886.png?v=1786678668"},{"product_id":"o2-rush-honda-crf-230r-03-16-air-filter","title":"O2 Rush HONDA CRF 230R 03-16 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF 230R 03-16 Compatible years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213780951275,"sku":"O2R 4122","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4122.png?v=1786678669"},{"product_id":"o2-rush-honda-crf-250r-10-13-air-filter","title":"O2 Rush HONDA CRF 250R 10-13 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF 250R 10-13 Compatible years: 2010, 2011, 2012, 2013.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213781180651,"sku":"O2R 4124","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4124_2bcbb9a1-f6fe-4ee6-80bc-bed66b2cf3e9.png?v=1786678667"},{"product_id":"o2-rush-honda-crf-250r-14-17-air-filter","title":"O2 Rush HONDA CRF 250R 14-17 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF 250R 14-17 Compatible years: 2014, 2015, 2016, 2017.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213781475563,"sku":"O2R 4131","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4131_38acd7d8-feab-40cd-81ea-3a8a5ccf1e31.png?v=1786678663"},{"product_id":"o2-rush-honda-crf-250r-18-21-air-filter","title":"O2 Rush HONDA CRF250R\/RX 18-21 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF250R\/RX 18-21 Compatible years: 2018, 2019, 2020, 2021.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213781704939,"sku":"O2R 4135","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4135_0c54dc8d-69c6-4579-8687-6edbe05daef3.png?v=1786678659"},{"product_id":"o2-rush-honda-crf-250r-22-24-air-filter","title":"O2 Rush HONDA CRF250R\/RX\/RWE 22-24 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF250R\/RX\/RWE 22-24 Compatible years: 2022, 2023, 2024.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213782261995,"sku":"O2R 4136","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R_4136_e28311e9-7c36-4237-ba0d-c92d22715225.jpg?v=1786678656"},{"product_id":"o2-rush-honda-crf-250r-25-on-air-filter","title":"O2 Rush HONDA CRF250R \/ RX \/ RWE \/ CRF250R\/RX\/RWE 25-ON Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF250R \/ RX \/ RWE \/ CRF250R\/RX\/RWE 25-ON Compatible years: 2025, 2026.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213783671019,"sku":"O2R 4142","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R_4142_9e77df14-a276-4514-ad41-a972a70ba5b4.png?v=1786678650"},{"product_id":"o2-rush-honda-crf-250r-03-09-250x-03-15-air-filter","title":"O2 Rush HONDA CRF250R \/ CRF250X “04-09”, 250X 03-15 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF250R \/ CRF250X “04-09”, 250X 03-15 Compatible years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213784195307,"sku":"O2R 4121","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4121_632c4bbd-e873-4544-b7b9-173e8fb2b4ce.png?v=1786678673"},{"product_id":"o2-rush-honda-crf-450-02-air-filter","title":"O2 Rush HONDA CRF450R 02 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF450R 02\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213784457451,"sku":"O2R 4117","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4117_71042d56-a65c-4b59-9186-d9eb8d66d302.png?v=1786678681"},{"product_id":"o2-rush-honda-crf-450l-17-on-air-filter","title":"O2 Rush HONDA CRF450L \/ CRF450RL 19-ON Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF450L \/ CRF450RL 19-ON Compatible years: 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213784752363,"sku":"O2R 4143","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R_4143_3c2b4c81-a963-439b-85cf-69b7bc13c51c.png?v=1786678645"},{"product_id":"o2-rush-honda-crf-450r-03-08-450x-03-15-air-filter","title":"O2 Rush HONDA CRF450R \/ CRF450X 03-08, 450X 03-15 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF450R \/ CRF450X 03-08, 450X 03-15 Compatible years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213788094699,"sku":"O2R 4121","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4121.png?v=1786678672"},{"product_id":"o2-rush-honda-crf-450r-09-12-air-filter","title":"O2 Rush HONDA CRF 450R 09-12 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF 450R 09-12 Compatible years: 2009, 2010, 2011, 2012.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213788324075,"sku":"O2R 4124","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4124.png?v=1786678666"},{"product_id":"o2-rush-honda-crf-450r-13-16-air-filter","title":"O2 Rush HONDA CRF 450R 13-16 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF 450R 13-16 Compatible years: 2013, 2014, 2015, 2016.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213788553451,"sku":"O2R 4131","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4131.png?v=1786678662"},{"product_id":"o2-rush-honda-crf-450r-17-20-air-filter","title":"O2 Rush HONDA CRF450R\/RX 17-20 Air Filter","description":"\u003cp\u003eO2 Rush Air Filter. Suits: HONDA CRF450R\/RX 17-20 Compatible years: 2017, 2018, 2019, 2020.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eO2Rush Single-Stage Air Filters\u003c\/strong\u003e\u003cbr\u003e\u003cem\u003eMaximum airflow for riders who want every bit of performance\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2_Rush_Call_Out.png?v=1793249384\" alt=\"O2Rush air filter construction and features\"\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe O2Rush is Unifilter’s high-flow single-stage dirt bike filter, built for riders chasing maximum airflow and throttle response. Its saw-tooth corrugated foam gives you twice the surface area of a standard filter, so it captures more dirt and keeps breathing freely for longer.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhy riders choose O2Rush\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eHighest airflow of any filter in independent testing\u003c\/li\u003e\n\u003cli\u003eSaw-tooth corrugated foam with double the surface area of a standard filter\u003c\/li\u003e\n\u003cli\u003eUltra-soft seals for a tight fit between the airbox and filter cage\u003c\/li\u003e\n\u003cli\u003eAvailable dry or pre-oiled and race ready\u003c\/li\u003e\n\u003cli\u003eDesigned and made in Australia\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIndependently tested airflow\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIn June 2023, Warspeed Industries independently tested seven air filters for the 2023 KTM 450SX on a SuperFlow SF-400 flow bench at 28 inches of water. The O2Rush (O2R1455) recorded the highest airflow of every filter tested, at 223.81 CFM. It flowed more than the KTM\/Twin Air OEM filter, Twin Air Beach Race, Dirtlab, Motorex, Funnelweb and our own ProComp2 dual-stage filter.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eTest conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eWhich filter is right for you?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eChoose O2Rush for motocross, track riding and conditions where airflow matters most. Riding in heavy dust, long enduro days or desert conditions? The [ProComp2 dual-stage filter] gives you an extra stage of protection with almost no airflow loss.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/Air_Flow_Test.jpg?v=1793237439\" alt=\"Independent airflow comparison for seven air filters, tested at 28 inches of water\"\u003e\u003c\/p\u003e","brand":"Unifilter","offers":[{"title":"Default Title","offer_id":49213788848363,"sku":"O2R 4135","price":41.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0848\/0404\/2987\/files\/O2R4135.png?v=1786678658"}],"url":"https:\/\/uniflow.com.au\/collections\/dirt-bike-air-filters-o2-rush.oembed","provider":"Unifilter Australia","version":"1.0","type":"link"}