
PROX Piston Kit – Manufacturer Ref. 01.1419.B
A reliable replacement for Cross and Roadster engines, this PROX piston kit is aimed at riders concerned with a clean and durable rebuild. Made from aluminum, it features a piston diameter of Ø 95.970 mm with oversize letter B, flat profile, and standard compression, designed to match the necessary specifications after boring to achieve the appropriate piston/ring clearance for the cylinder.
Each component is crafted for professional assembly: tight tolerances, machined skirt surface, and piston profile intended to minimize hot spots on the crown. The kit allows for a complete replacement of the moving group and facilitates the restart of the engine after cylinder/alignment intervention.
Common compatibilities: HONDA CRF 450 X (2026), HONDA CRF 450 L (PD11L, 2021), HONDA CRF 450 X (PE06, 2020). Always check the reference and engine specifications before installation.