Description
If you’re running a Honda CR250R with high mileage or planning a performance build, a quality piston kit is essential to restore compression and unlock the engine’s full potential. Wiseco’s forged construction and CNC precision ensure reliable power delivery whether you’re racing or pushing hard on the trail. This 71mm oversize kit gives you the exact fitment and durability you need without guesswork.
- Wiseco part number 431M07100
- 71.00 mm bore diameter
- Forged high-silicon aluminum alloy
- CNC machined for precision fit
- Fits Honda CR250R 1978–1980
- Also fits Honda ATC250R 1981–1984
- Improved combustion efficiency
- Enhanced throttle response
- Lightweight construction
- Bolt-on installation






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