
The PROX forged piston ref. 01.6319.B is designed for motocross riders seeking a robust and precisely machined engine part. Made from a specific aluminum alloy, this piston reduces internal friction while providing consistent performance suited for off-road conditions. Its flat top and reed machining facilitate the timing of the combustion chamber on engines requiring this profile.
Suitable for rebuilding and maintaining motocross engines, this piston features controlled dimensions to ensure a clean fit and reliable operation under intensive use. The oversize letter B indicates the machining size, please verify compatibility with your cylinder before installation.
Common compatibilities (examples): KTM 250 SX 2000–2002. Before purchase, check the oversize and engine specifications to ensure compliance. This product is intended for motocross use and engine preparations requiring a forged replacement part.