O2 Rush Race Ready GAS GAS EC All Models 21-23 Air Filter Pre-Oiled
Check out our step-by-step guides on the Unifilter Australia YouTube Channel.
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Vehicles this filter fits
Part number O2R 1452RR fits all of the vehicles below. Your vehicle is highlighted.
| Make | Model | Years |
|---|---|---|
| GasGas | EC 250 | 2023 |
| GasGas | EC 250 (EU) | 2021-2023 |
| GasGas | EC 250F | 2023 |
| GasGas | EC 250F (EU) | 2021-2023 |
| GasGas | EC 250F IKD | 2023 |
| GasGas | EC 300 | 2023 |
| GasGas | EC 300 (EU) | 2021-2023 |
| GasGas | EC 350F | 2023 |
| GasGas | EC 350F (EU) | 2021-2023 |
| GasGas | MC 125 | 2023 |
| GasGas | MC 125 (EU) | 2021-2023 |
| GasGas | MC 250 | 2023 |
| GasGas | MC 250F | 2023 |
| GasGas | MC 250F (EU) | 2021-2023 |
| GasGas | MC 250F BT | 2023 |
| GasGas | MC 250F IKD | 2023 |
| GasGas | MC 350F | 2023 |
| GasGas | MC 350F BT | 2023 |
| GasGas | MC 450F | 2023 |
| GasGas | MC 450F (EU) | 2021-2023 |
| Husqvarna | FC 250 (EU) | 2017-2022 |
| Husqvarna | FC 250 (US) | 2021-2022 |
| Husqvarna | FC 350 (EU) | 2017-2022 |
| Husqvarna | FC 350 (US) | 2021-2022 |
| Husqvarna | FC 450 (EU) | 2017-2022 |
| Husqvarna | FC 450 (US) | 2021-2022 |
| Husqvarna | FC 450 ROCKSTAR EDITION (US) | 2018-2021 |
| Husqvarna | FE 250 | 2017-2019 |
| Husqvarna | FE 250 (EU) | 2017-2023 |
| Husqvarna | FE 250 (US) | 2017-2019 |
| Husqvarna | FE 250 CKD | 2022-2023 |
| Husqvarna | FE 250 HERITAGE (EU) | 2023 |
| Husqvarna | FE 350 | 2017-2019 |
| Husqvarna | FE 350 (EU) | 2017-2023 |
| Husqvarna | FE 350 HERITAGE (EU) | 2023 |
| Husqvarna | FE 350 ROCKSTAR EDITION (EU) | 2021-2022 |
| Husqvarna | FE 450 | 2017-2019 |
| Husqvarna | FE 450 (EU) | 2017-2023 |
| Husqvarna | FE 450 HERITAGE (EU) | 2023 |
| Husqvarna | FE 501 | 2017-2019 |
| Husqvarna | FE 501 (EU) | 2017-2023 |
| Husqvarna | FS 450 (EU) | 2017-2022 |
| Husqvarna | FX 350 | 2019, 2022 |
| Husqvarna | FX 450 | 2022 |
| Husqvarna | TC 125 (EU) | 2017-2022 |
| Husqvarna | TC 250 (EU) | 2017-2022 |
| Husqvarna | TE 150 (EU) | 2023 |
| Husqvarna | TE 150 HERITAGE (EU) | 2023 |
| Husqvarna | TE 150i (EU) | 2020-2022 |
| Husqvarna | TE 250 | 2017-2018 |
| Husqvarna | TE 250 (EU) | 2017, 2023 |
| Husqvarna | TE 250 CKD | 2023 |
| Husqvarna | TE 250 HERITAGE (EU) | 2023 |
| Husqvarna | TE 250i (EU) | 2018-2022 |
| Husqvarna | TE 250i CKD | 2022 |
| Husqvarna | TE 300 | 2017-2018 |
| Husqvarna | TE 300 (EU) | 2017, 2023 |
| Husqvarna | TE 300 HERITAGE (EU) | 2023 |
| Husqvarna | TE 300i (EU) | 2018-2022 |
| Husqvarna | TE 300i JARVIS EDITION (EU) | 2020 |
| Husqvarna | TE 300i ROCKSTAR EDITION (EU) | 2021-2022 |
| Husqvarna | TX 300 | 2019 |
| Husqvarna | TX125 | 2017-2023 |
| KTM | 125 SX | 2020 |
| KTM | 125 SX (EU) | 2016-2022 |
| KTM | 125 SX (US) | 2016-2019 |
| KTM | 150 EXC TPI (EU) | 2020-2022 |
| KTM | 150 SX (EU) | 2016-2022 |
| KTM | 250 EXC (EU) | 2017-2019, 2023 |
| KTM | 250 EXC SIX DAYS (EU) | 2017 |
| KTM | 250 EXC SIX DAYS TPI (EU) | 2018-2022 |
| KTM | 250 EXC TPI (EU) | 2018-2022 |
| KTM | 250 EXC-F | 2017-2019 |
| KTM | 250 EXC-F (EU) | 2020-2023 |
| KTM | 250 EXC-F (US) | 2017-2019 |
| KTM | 250 SX (EU) | 2017-2022 |
| KTM | 250 SX (US) | 2017 |
| KTM | 250 SX-F | 2022 |
| KTM | 250 SX-F (EU) | 2016-2021 |
| KTM | 250 SX-F (US) | 2016-2020 |
| KTM | 250 SX-F FACTORY EDITION (US) | 2015 |
| KTM | 250 SX-F TROY LEE DESIGNS | 2021 |
| KTM | 250 XC-F (US) | 2016-2020 |
| KTM | 300 EXC (EU) | 2017-2019, 2023 |
| KTM | 300 EXC ERZBERGRODEO (EU) | 2023 |
| KTM | 300 EXC SIX DAYS (EU) | 2017-2019, 2023 |
| KTM | 300 EXC SIX DAYS TPI | 2022 |
| KTM | 300 EXC SIX DAYS TPI (EU) | 2018-2021 |
| KTM | 300 EXC SIX DAYS TPI CKD (CN) | 2021-2022 |
| KTM | 300 EXC TPI (EU) | 2018-2022 |
| KTM | 300 EXC TPI ERZBERGRODEO (EU) | 2020-2022 |
| KTM | 300 XC TPI (US) | 2020-2022 |
| KTM | 300 XC-W ERZBERGRODEO (US) | 2023 |
| KTM | 300 XC-W TPI ERZBERGRODEO (US) | 2020-2022 |
| KTM | 350 EXC-F | 2017-2019 |
| KTM | 350 EXC-F (EU) | 2020-2023 |
| KTM | 350 EXC-F (US) | 2017-2020 |
| KTM | 350 EXC-F SIX DAYS | 2022-2023 |
| KTM | 350 EXC-F SIX DAYS (EU) | 2017-2019, 2021 |
| KTM | 350 EXC-F SIX DAYS CKD | 2023 |
| KTM | 350 SX-F (EU) | 2016-2022 |
| KTM | 350 SX-F (US) | 2016-2020 |
| KTM | 350 XC-F (US) | 2016-2020 |
| KTM | 450 EXC-F | 2017-2019 |
| KTM | 450 EXC-F (EU) | 2020-2023 |
| KTM | 450 EXC-F SIX DAYS (EU) | 2017-2019, 2021-2023 |
| KTM | 450 SMR (EU) | 2021-2022 |
| KTM | 450 SX-F (EU) | 2016-2022 |
| KTM | 450 SX-F (US) | 2016-2020 |
| KTM | 450 SX-F FACTORY EDITION (US) | 2015 |
| KTM | 450 SX-F HERLINGS REPLICA | 2019 |
| KTM | 450 XC-F (US) | 2016-2020 |
| KTM | 500 EXC-F | 2017-2019 |
| KTM | 500 EXC-F (EU) | 2020-2023 |
| KTM | 500 EXC-F SIX DAYS (EU) | 2017-2019, 2021-2023 |
| KTM | RC4 R | 2020-2023 |
O2 Rush Race Ready Air Filter. Suits: GAS GAS EC All Models 21-23 Compatible years: 2021, 2022, 2023.
O2Rush Single-Stage Air Filters
Maximum airflow for riders who want every bit of performance

The 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.
Why riders choose O2Rush
- Highest airflow of any filter in independent testing
- Saw-tooth corrugated foam with double the surface area of a standard filter
- Ultra-soft seals for a tight fit between the airbox and filter cage
- Available dry or pre-oiled and race ready
- Designed and made in Australia
Independently tested airflow
In 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.
Test conducted 20 June 2023 at 16°C ambient temperature. Chart axis starts at 215 CFM to show differences clearly.
Which filter is right for you?
Choose 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.
Please note: Dry O2Rush filters must be oiled before use. For best results, use Unifilter Filter Fix air filter oil.

Unifilter replacement automotive air filters are designed to give the ultimate in protection while delivering the best performance possible. Designed and made in Australia for Australian conditions.
Features
- Australian made & designed for Australian conditions
- Corrugated outer stage for increased surface area
- Fully serviceable 2 stage element
- Improved power, torque & fuel ecconomy
- Improved filtration
