Description
The piston is the powerhouse of your 2-stroke engine—it’s where combustion converts to acceleration. A worn or undersized piston kills compression, throttle response, and overall performance. The Wiseco RE902M06640 Racer Elite Kit restores that lost power while delivering the durability needed for consistent, high-rpm riding across seasons.
Built for the Yamaha YZ250 and YZ250X, this piston kit combines Wiseco’s proven engineering with materials and coatings specifically designed to handle the demands of modern 2-stroke competition and trail riding. You get faster acceleration, sharper power delivery, and a piston that won’t quit mid-season.
- Bore Diameter: 66.40mm
- Fitment: YZ250 (1999–2024), YZ250X (2020–2024)
- Material: High-performance alloy
- ArmorPlating™: Crown protection included
- Skirt Coating: Precision friction-reduced
- Ring Design: Enhanced sealing geometry
- Weight: Lightweight optimized
- Installation: Direct bolt-on replacement
- MPN: RE902M06640
