Description
If you’re rebuilding a KX250F or RM-Z250 engine or pushing for higher output on the track, a quality piston kit is non-negotiable. The Wiseco 4842M07700 delivers the compression ratio and material quality needed to support increased horsepower and sustained high-RPM reliability. This is a complete, bolt-in solution that eliminates guesswork during engine assembly.
Why This Kit Matters: The 13.1:1 compression ratio unlocks real gains in combustion efficiency, while aerospace-grade forged aluminum handles the thermal and mechanical stress of aggressive riding. Whether you’re a weekend racer or pushing your 4-stroke to its limits, this kit provides the precision engineering required for consistent performance and longevity.
- 77mm bore diameter
- 13.1:1 compression ratio
- Forged aluminum construction
- Includes piston, rings, pin, circlips
- Lightweight design
- 2004–2005 KX250F compatible
- 2004–2006 RM-Z250 compatible
- Race-proven engineering
- MPN: 4842M07700
