WOSSNER offers you a high-performance 4-stroke piston kit designed for optimum precision fit and maximum combustion efficiency. Manufactured with high-quality materials and advanced manufacturing technology, it reduces internal friction, limits compression losses and improves engine stability throughout the rev range. Its design also enables better thermal management to reduce the risk of overheating and premature wear. Ideal for competition or demanding off-road use, it helps extend engine life while maintaining consistent, reliable performance.

Fits on :

YAMAHA WR 250 F 2017

YAMAHA WR 250 F 2017

YAMAHA WR 250 F 2016

YAMAHA WR 250 F 2016

YAMAHA WR 250 F 2015

YAMAHA WR 250 F 2015

YAMAHA YZ 250 F 2017

YAMAHA YZ 250 F 2016

YAMAHA YZ 250 F 2016

YAMAHA YZ 250 F 2015

YAMAHA YZ 250 F 2014