

PROX offers you a piston kit designed for high-performance 4-stroke engines, providing an excellent combination of power, reliability and durability under the most demanding operating conditions. Made from high-grade aluminum, this piston ensures optimum resistance to heat, high pressure and wear, while guaranteeing constant engine stability at high revs. Its precision design improves combustion chamber sealing to optimize compression, combustion and overall engine efficiency. Thanks to its robust, balanced structure, it promotes improved engine responsiveness, efficient revving and consistent performance throughout the operating range.
Fits on :
YAMAHA WR 450 F 2026
YAMAHA WR 450 F 2025
YAMAHA WR 450 F 2024
YAMAHA YZ 450 F 2025
YAMAHA YZ 450 F 2025
YAMAHA YZ 450 F 2024
YAMAHA YZ 450 F 2024
YAMAHA YZ 450 F 2023
YAMAHA YZ 450 F 2023
YAMAHA YZ 450 FX 2026
YAMAHA YZ 450 FX 2025
YAMAHA YZ 450 FX 2024
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