PROX offers you a forged piston kit designed for high-performance 2-stroke engines, providing an excellent combination of power, reliability and durability under the most demanding conditions. Made from high-quality forged aluminum, this piston provides optimum resistance to heat, high stress and wear, while guaranteeing constant engine stability even at high engine speeds. Its precision design improves combustion chamber tightness to optimize compression, combustion and overall engine efficiency. Thanks to its reinforced structure and optimized weight, it promotes rapid rev-up, improved engine responsiveness and longer life for internal components.

Fits on :

YAMAHA WR 250 F 2026

YAMAHA WR 250 F 2025

YAMAHA WR 250 F 2024

YAMAHA WR 250 F 2023

YAMAHA WR 250 F 2022

YAMAHA WR 250 F 2021

YAMAHA WR 250 F 2020

YAMAHA YZ 250 F 2026

YAMAHA YZ 250 F 2026

YAMAHA YZ 250 F 2025

YAMAHA YZ 250 F 2025

YAMAHA YZ 250 F 2025

YAMAHA YZ 250 F 2024

YAMAHA YZ 250 F 2024

YAMAHA YZ 250 F 2023

YAMAHA YZ 250 F 2023

YAMAHA YZ 250 F 2022

YAMAHA YZ 250 F 2022

YAMAHA YZ 250 F 2021

YAMAHA YZ 250 F 2021

YAMAHA YZ 250 F 2020

YAMAHA YZ 250 F 2019

YAMAHA YZ 250 FX 2026

YAMAHA YZ 250 FX 2025

YAMAHA YZ 250 FX 2024

YAMAHA YZ 250 FX 2023

YAMAHA YZ 250 FX 2022

YAMAHA YZ 250 FX 2021

YAMAHA YZ 250 FX 2020