Description
The Wiseco 756M06640 piston kit delivers the strength and thermal stability your RM250 needs to handle sustained high-RPM riding without compromise. Built from high-silicon alloy, this piston resists detonation and wear while maintaining precise tolerances for reliable starts and consistent performance across varied riding conditions. If you’re rebuilding after a failure or upgrading to maximize your two-stroke’s potential, this is the OEM-quality replacement that won’t leave you stranded on the trail or track.
- 66.4mm standard bore
- High-silicon alloy construction
- Improved thermal stability
- Lightweight design
- Precision-engineered fit
- 2000-2002 RM250 specific
- MPN: 756M06640









