
PROX Forged Piston designed for cross and roadster preparations: a robust and precise replacement part, made from a specific aluminum alloy to limit friction and ensure longevity suitable for intensive use. Ideal for a refurbishment equivalent to the original equipment, this piston offers a geometry and finish designed to meet manufacturer tolerances.
This PROX piston is aimed at riders looking for a reliable replacement part for 450 cm3 engines (cross and roadster). Its forged design provides good durability against the cyclic stresses encountered in off-road or on-road conditions. The oversize A and the diameter of 94.96 mm correspond to the bore dimensions intended for these refurbishments.
Common application examples: KTM 450 SX-F (2025), Husqvarna FC 450 (2025), GAS GAS MC 450 F (2025). Always check compatibility with your engine before installation.