O2 Rush KTM 4-Stroke: 400, 450, 520, 525 01-07 Air Filter
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Vehicles this filter fits
Part number O2R 1411 fits all of the vehicles below. Your vehicle is highlighted.
| Make | Model | Years |
|---|---|---|
| KTM | 250 EXC RACING | 2002-2006 |
| KTM | 250 EXC RACING (EU) | 2001 |
| KTM | 250 EXC RACING SIX DAYS (EU) | 2003 |
| KTM | 400 EXC FACTORY (EU) | 2005 |
| KTM | 400 EXC RACING | 2001-2005 |
| KTM | 400 SX RACING | 2001-2002 |
| KTM | 450 EXC (US) | 2007 |
| KTM | 450 EXC FACTORY (EU) | 2005 |
| KTM | 450 EXC FACTORY RACING | 2007 |
| KTM | 450 EXC RACING | 2003-2007 |
| KTM | 450 EXC RACING SIX DAYS | 2004-2005 |
| KTM | 450 EXC RACING SIX DAYS (EU) | 2006-2007 |
| KTM | 450 SMR | 2005-2007 |
| KTM | 450 SMR (EU) | 2004 |
| KTM | 450 SMS | 2004 |
| KTM | 450 SX | 2006 |
| KTM | 450 SX RACING | 2003-2005 |
| KTM | 450 SX STEVE RAMON | 2005 |
| KTM | 450 SXS | 2006 |
| KTM | 450 SXS RACING | 2003-2005 |
| KTM | 450 XC (EU) | 2007 |
| KTM | 450 XC CROSS COUNTRY | 2004 |
| KTM | 520 EXC RACING | 2001-2002 |
| KTM | 520 SX RACING | 2001-2002 |
| KTM | 525 EXC FACTORY RACING | 2007 |
| KTM | 525 EXC RACING | 2003-2007 |
| KTM | 525 EXC RACING SIX DAYS | 2004-2005 |
| KTM | 525 SMR | 2005 |
| KTM | 525 SX | 2006 |
| KTM | 525 SX RACING | 2003-2005 |
| KTM | 525 SX SUPERMOTO | 2004 |
| KTM | 540 SXS RACING | 2001-2005 |
| KTM | 105 SX | 2006 |
| KTM | 105 SX (US) | 2007-2011 |
| KTM | 125 EXC (EU) | 2004-2007 |
| KTM | 125 EXC SIX DAYS (EU) | 2004-2007 |
| KTM | 125 SX | 2004-2006 |
| KTM | 125 SX TYLA RATTRAY | 2005 |
| KTM | 125 SXS | 2004-2006 |
| KTM | 200 EXC | 2004-2007 |
| KTM | 200 SX | 2004 |
| KTM | 250 EXC | 2004-2007 |
| KTM | 250 EXC (US) | 2004-2005 |
| KTM | 250 EXC FACTORY (EU) | 2005 |
| KTM | 250 EXC SIX DAYS (EU) | 2004-2007 |
| KTM | 250 EXC-F | 2007 |
| KTM | 250 EXC-F (EU) | 2006 |
| KTM | 250 EXC-F SIX DAYS (EU) | 2007 |
| KTM | 250 SX | 2004-2006 |
| KTM | 250 SX-F | 2006 |
| KTM | 250 SX-F (US) | 2005 |
| KTM | 250 SXS | 2004-2006 |
| KTM | 250 SXS-F | 2006 |
| KTM | 250 XC-F (US) | 2007 |
| KTM | 300 EXC | 2004-2007 |
| KTM | 300 EXC SIX DAYS | 2005 |
| KTM | 300 EXC SIX DAYS (EU) | 2006-2007 |
| KTM | 300 EXC-E | 2007 |
| KTM | 540 SXS | 2006 |
| KTM | 560 SMR | 2006-2007 |
| KTM | 85 SX 17/14 | 2005-2012 |
| KTM | 85 SX 19/16 | 2005-2012 |
O2 Rush Air Filter. Suits: KTM 4-Stroke: 400, 450, 520, 525 01-07 Compatible years: 2001, 2002, 2003, 2004, 2005, 2006, 2007.
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
Service Products
Service Products - Filter Oil & Cleaner
Service Products - Filter Oil & Cleaner
Unifilter's foam filter oil is the only 100% mineral based filter oil left on the market. There simply is no better foam filter oil available. Mineral based foam air filter oil does not contain any harsh chemicals or solvents that can affect the foams and glues used to manufacture foam air filters. Mineral Based filter oils also have the added benifit of not drying out like synthetic foam filter oil can. If you want the best protection for your engine there is no better foam air filter oil available.
Unifilter's Foam Air Filter Cleaner is a Citrus based cleaner. Our Citrus Cleaner not only cleans all the dust and dirt out of you filter is also will not have any adverse effect on the foam.