The Twin Air Foam Air Filter, part number 151128, is designed for select Kawasaki motocross and cross-country motorcycles. This replacement filter uses a thick, flat foam sealing ring to create maximum contact with the airbox while maintaining effective airflow. Its greaseless design acts as a breathable gasket, helping support consistent engine performance in demanding riding environments.
The filter features a coarse open-pore outer foam layer that captures airborne dirt, grime, and sand before they reach the engine. A fine open-pore inner foam layer provides secondary filtration for smaller particles while preserving air passage. Twin Air formulates the adhesive to withstand repeated cleaning, including cleaning with harsh solvents or gasoline, helping extend service life when the filter is maintained according to the manufacturer’s recommendations.
Compared with the stock filter design, this Twin Air replacement is slightly smaller to increase air space and circulation around the filter. It is a direct-fit application for select Kawasaki KX models, including the 2024–2026 Kawasaki KX450F and KX450X, along with the 2025–2026 Kawasaki KX250F and KX250X. Verify the motorcycle model and year before installation to ensure proper fitment.
Manufacturer: Twin Air. Vendor part number: 151128. This foam air filter is intended for off-road motorcycle use and provides a reusable filtration solution for riders who need dependable protection against dust, sand, and other common trail or track contaminants.
Features:
- Thick, flat foam sealing ring provides maximum contact with the airbox
- Coarse open-pore outer foam captures airborne dirt, grime, and sand
- Fine open-pore inner foam traps smaller particles while maintaining air passage
- Adhesive withstands repeated cleaning with harsh solvents or gasoline
- Slightly smaller than the stock filter to improve air space and circulation
- Fits select 2024–2026 Kawasaki KX450F and KX450X models
- Fits select 2025–2026 Kawasaki KX250F and KX250X models
Fitment:
2024 Kawasaki KX450F
2024 Kawasaki KX450X
2025 Kawasaki KX250F
2025 Kawasaki KX250X
2025 Kawasaki KX450F
2025 Kawasaki KX450X
2026 Kawasaki KX250F
2026 Kawasaki KX250X
2026 Kawasaki KX450F
2026 Kawasaki KX450X