Description
If you’re rebuilding a CR250R or ATC250R engine, piston quality directly impacts reliability and power delivery. Wiseco’s high-silicon aluminum construction handles the extreme combustion pressures of 2-stroke performance while maintaining the tight tolerances needed for consistent ring seal and minimal blow-by. This kit restores—or exceeds—factory performance specs with precision CNC machining that eliminates guesswork during installation.
- 72mm oversize dimension
- High-silicon aluminum alloy
- CNC-machined precision
- Optimized combustion chamber
- Fits CR250R 1978-1980
- Fits ATC250R 1981-1984
- Increased torque output
- Extreme pressure rated
- MPN: 431M07200
- Bolt-on installation
