The RFX Air Filter, part number FXAF 40006 55NO, is manufactured by Multi Air for dependable replacement filtration on select Yamaha off-road motorcycles. Designed for precise fitment, this filter helps provide clean airflow to the engine while supporting consistent performance in motocross and off-road riding applications. The RFX brand combines practical design with more than 30 years of Multi Air experience.
Built with breathable twin-layered foam, the filter captures dirt and debris without unnecessarily restricting airflow. Nonflammable foam is used for all four-stroke models, providing a durable filtration solution for demanding riding conditions. Its direct-fit design makes installation straightforward and eliminates the need for modifications.
Fitment: The RFX FXAF 40006 55NO Air Filter fits 2023 Yamaha YZ450F; 2024 Yamaha YZ250F, YZ450F, and WR250F; 2025 Yamaha YZ250F, WR250F, and YZ450F; and 2026 Yamaha YZ250F and YZ450F models. Confirm your motorcycle model and year before ordering to ensure proper application.
Manufacturer: Multi Air
Brand: RFX
Part Number: FXAF 40006 55NO
Vendor Part Number: 739-0072
Features:
- Twin-Layer Foam: Breathable foam construction supports effective engine filtration and airflow.
- Nonflammable Foam: Uses nonflammable foam for compatible four-stroke motorcycle applications.
- Precise Fitment: Direct-fit design is made for select Yamaha YZ and WR250F models.
- Off-Road Application: Suitable for motocross and off-road riding conditions.
- Trusted Manufacturer: Produced by Multi Air, an experienced filtration manufacturer.
Fitment:
2023 Yamaha YZ450F
2024 Yamaha WR250F
2024 Yamaha YZ250F
2024 Yamaha YZ450F
2025 Yamaha WR250F
2025 Yamaha YZ250F
2025 Yamaha YZ450F
2026 Yamaha YZ250F
2026 Yamaha YZ450F