Description
If you’re running a CR250R from the golden era of 2-stroke racing, piston wear is inevitable—and a worn piston tanks power, efficiency, and reliability. The Wiseco 614M06640 is a direct replacement built to OEM specifications with high-silicon forged aluminum, delivering the durability and precision your engine demands. This complete kit includes rings, wrist pin, and circlips, so you have everything needed for a proper rebuild.
Wiseco pistons are engineered for 2-stroke combustion dynamics, offering crisp throttle response and extended engine life without sacrificing performance. Whether you’re prepping for vintage motocross or maintaining a collector’s machine, this kit restores your CR250R to factory performance standards.
- Bore Diameter: 66.40mm
- Material: High-silicon forged aluminum
- Engine Type: 2-stroke
- Vehicle Application: Honda CR250R (1986–1996)
- Fitment: Model-specific
- Kit Contents: Piston, rings, wrist pin, circlips
- Installation: Bolt-on replacement
- Manufacturer: Wiseco
- MPN: 614M06640









