Description
A clogged or degraded air filter directly reduces engine power, throttle response, and fuel efficiency on your KX. The Twin Air dual-stage foam design delivers superior filtration without sacrificing the airflow your 2-stroke demands, keeping your engine breathing freely whether you’re racing or trail riding in dusty conditions.
Built with a fused foam construction that minimizes particle bridging between layers, this filter maintains consistent performance longer between cleanings. The flat sealing ring ensures a leak-free fit in your airbox, preventing unfiltered air from bypassing the element—critical for protecting your piston and rings on high-RPM machines.
- Dual-stage foam technology
- Coarse outer layer
- Fine inner layer
- Fused design construction
- Flat sealing ring
- Fits KX125 1990-1991
- Fits KX125 1994-1996
- Fits KX250 1990-1991
- Fits KX250 1994-1996
- Single unit replacement
- MPN: 151111
- Bolt-on installation







