The RFX Pre-Oiled Air Filter, part number FXAF 20004 55PO, is a performance replacement air filter produced by Multi Air for compatible Kawasaki motocross motorcycles. Designed for dependable engine air filtration, this pre-oiled filter helps provide clean airflow while supporting consistent performance in demanding riding conditions. Its precise fitment makes installation straightforward and helps ensure reliable sealing within the factory airbox.
Built with breathable, twin-layered foam, the RFX air filter balances airflow and filtration for a range of riding levels, from recreational use to competitive motocross. The foam construction is designed to capture dirt and debris before they reach the engine, helping protect vital components during dusty or muddy rides. The filter is pre-oiled for convenience, reducing preparation time before installation.
Multi Air brings more than 30 years of air-filter manufacturing experience to the RFX range. This model uses nonflammable foam for compatible four-stroke applications and is engineered as a direct-fit replacement for select Kawasaki KX250F and KX450F models. Verify the motorcycle year and model before ordering to ensure proper fitment.
Fitment: 2017 Kawasaki KX250F; 2018 Kawasaki KX250F; 2019 Kawasaki KX250F; 2020 Kawasaki KX250F; 2016 Kawasaki KX450F; 2017 Kawasaki KX450F; 2018 Kawasaki KX450F.
Features:
- Twin-layered foam: Provides breathable filtration for dependable airflow and dirt protection.
- Pre-oiled design: Ready for installation with reduced preparation time.
- Nonflammable foam: Used for compatible four-stroke motorcycle applications.
- Precise fitment: Designed as a replacement air filter for select Kawasaki KX250F and KX450F models.
- Multi Air construction: Manufactured by Multi Air and sold under the trusted RFX brand.
Fitment:
2016 Kawasaki KX450F
2017 Kawasaki KX250F
2017 Kawasaki KX450F
2018 Kawasaki KX250F
2018 Kawasaki KX450F
2019 Kawasaki KX250F
2020 Kawasaki KX250F