Description
If you’re running a YZ 250 in competitive trail or race conditions, a worn or stock piston limits your engine’s potential for power and reliability. The Wiseco +1.00 mm piston kit delivers the compression increase and durability you need to extract maximum horsepower while maintaining the predictable powerband that separates winners from the field. This is a complete, bolt-together solution that eliminates guesswork and gets you back to racing.
Built from high-silicon aluminum and featuring Wiseco’s proven forging design, this piston handles the demands of both technical terrain and high-RPM racing. The E-coated crown and ring grooves resist wear and micro-welding, while the optimized geometry ensures consistent performance across your entire power range. Whether you’re a professional racer or a dedicated tuner, this kit delivers the precision and longevity you depend on.
- Wiseco +1.00 mm oversize
- High-silicon aluminum construction
- Complete kit included
- Forged piston design
- Forged wrist pins
- Piston rings (set)
- Circlips included
- E-coated crown
- E-coated ring grooves
- Enhanced compression ratio
- Optimized bore sealing
- Increased power output
- Fits Yamaha YZ 250
- 1999–2022 model years
- MPN: 677M06900
