The O2 RUSH High-Performance air filter is the ultimate performance upgrade for modern Honda CRF250R, CRF250RX, CRF450R and CRF450RX models. Designed with a coarse outer foam layer and fine inner layer, it flows dramatically more clean air than the stock filter – giving you sharper throttle response, more top-end power, and better engine protection in dusty conditions. The durable rubber sealing rim and aluminum-reinforced mesh create a perfect airtight seal every time you close the airbox. Easy to maintain: just clean with O2 RUSH cleaner, let dry, re-oil, and reinstall. One filter lasts the lifetime of your bike with proper care. Perfect for motocross, enduro, desert racing, or trail riding.
The O2 RUSH performance air filter is the new standard for 2023-2025 KTM 2-stroke & 4-stroke models and 2024-2025 Husqvarna FE enduro bikes that share the same airbox design. Its large-surface single-stage foam dramatically outperforms the stock filter, delivering sharper throttle response and noticeable top-end power while still filtering the finest silt. The thick rubber sealing rim and reinforced mesh guarantee a 100% airtight seal every time you close the airbox – critical for the latest generation KTM/Husky airbox. Maintenance is simple and fast: clean with O2 RUSH cleaner, dry, re-oil, reinstall. Ideal for motocross, enduro, hare scrambles, desert, and GNCC racing.
Elevate your dirt bike's performance with the O2 RUSH High Performance Air Filter, trusted by Australia's top race teams. This premium air filter delivers the ultimate in airflow and filtration through its innovative Saw-Tooth foam design, which provides double the surface area compared to standard filters for superior contaminant trapping and engine protection. Ideal for demanding off-road conditions, it ensures optimal air intake without compromising power output or durability. Crafted with precision, the filter features a single-stage CNC profile-cut Saw-Tooth foam that enhances efficiency by increasing surface area and capturing more particles. The 10-15mm foam thickness strikes the perfect balance between filtration and unrestricted airflow, while polyurethane grommets offer secure, leak-proof attachment. A 12mm ultra-soft foam seal creates a tight bond between the filter cage and air box, minimizing air bypass and maximizing filtered air delivery to the engine. All O2 RUSH filters are laser-cut for exact fitment, ensuring seamless installation without modifications. Flexible glue seams prevent cracking and brittleness over time, extending the filter's lifespan even in harsh riding environments. Independently tested on models like the KTM 450SX at 16°C using the Superflow 400, this filter demonstrates exceptional airflow and efficiency, making it a must-have for riders seeking peak engine health and performance. Compatible across KTM, Husqvarna, and Gas Gas platforms due to shared air box designs. Easy to clean and maintain—simply wash with filter cleaner, oil, and reinstall. Perfect for motocross, enduro, and trail riding. Upgrade today for reliable protection against dust, dirt, and debris while boosting throttle response and power.
The official O2 RUSH High Performance air filter chosen by factory race teams across Australia & USA. Featuring the revolutionary Saw-Tooth foam design with 2X the surface area of stock filters, this filter delivers unmatched airflow while trapping more dust and debris than any competitor. Precision laser-cut for perfect OEM fitment on all KX450F and KX250F models from 2006-2024. The 12mm ultra-soft sealing foam creates an airtight seal against the airbox, and flexible glued seams won’t crack or harden over time. Polyurethane grommets ensure rock-solid mounting even in the roughest conditions. Drop-in replacement – no modifications needed. Keep your Kawasaki running at peak power and protected in the nastiest dust and mud.
Experience superior engine protection and peak performance with the O2 RUSH Mini Air Filter. Its patented Saw-Tooth foam design offers double the filtration surface area of standard filters, trapping more contaminants while maximizing airflow for improved power and throttle response. The 10 mm ultra-soft foam seal ensures a perfect, dust-proof fit against the air box, preventing air leaks. This filter features flexible glue seams for enhanced durability and longevity, and its washable/reusable design makes maintenance simple. Laser-cut for perfect drop-in fit on all KTM 50 SX (2009-2025) and Gas Gas MC 50 (2021-2025).
Maximize power and protection with the O2 RUSH High-Performance single-stage air filter engineered specifically to fit all CRF450R (2009-2025) and CRF250R (2010-2025) models. The patented CNC-profiled Saw-Tooth foam doubles filtration surface area, trapping more dust while delivering unrestricted clean air for sharper throttle response and peak horsepower. The 12 mm Ultra-Soft seal creates a 100% airtight fit against the airbox, preventing bypass even in the harshest conditions. Fully washable and reusable.
Experience superior engine protection and peak performance with the O2 RUSH High-Performance Air Filter, trusted by leading race teams in extreme Australian conditions. Its patented Saw-Tooth foam design offers double the filtration surface area of standard filters, trapping more contaminants while maximizing airflow for improved power and throttle response. The ultra-soft foam seal ensures a perfect, dust-proof fit against the air box, preventing air leaks. This filter features flexible glue seams for enhanced durability and longevity, and its washable/reusable design makes maintenance simple. Laser-cut for perfect drop-in fit on every DR-Z400 model 2000-2025.
Experience superior engine protection and peak performance with the O2 RUSH High-Performance Air Filter. Its patented Saw-Tooth foam design offers double the filtration surface area of standard filters, trapping more contaminants while maximizing airflow for improved power and throttle response. The ultra-soft 12 mm foam seal ensures a perfect, dust-proof fit against the air box, preventing air leaks. This filter features flexible glue seams for enhanced durability and longevity, and its washable/reusable design makes maintenance simple. Laser-cut perfect fit for all YZ450F 2014-2025 & WR250F 2015-2025.
The latest-generation O2 Rush filter for current Yamaha YZ450F and WR250F. Patented Saw-Tooth foam doubles surface area for ultimate dust capture while delivering unrestricted clean air. Ultra-soft sealing lip creates a 100% airtight fit. Pre-oiled, fully washable & reusable – factory choice of top Yamaha race teams. Direct replacement for OEM BHR-14451-00.
The legendary TM-specific O2 Rush filter used by factory TM Racing teams worldwide. Patented Saw-Tooth foam doubles surface area for extreme dust capture while delivering unrestricted clean air. Ultra-soft sealing lip creates a 100% airtight fit. Pre-oiled, fully washable & reusable – the only filter trusted by TM for championship performance from 85cc to 530cc, 2002 to current models.
Give your 65cc racer the pro-level advantage with the O2 Rush Saw-Tooth filter. CNC-profiled foam doubles surface area for ultimate dust protection while flowing more clean air than stock. Ultra-soft sealing lip guarantees zero bypass. Fully washable & reusable – the same filter used by factory KTM/Gas Gas junior teams. Direct replacement for OEM A40506015000.
