
PROX Cast Piston (manufacturer part number 01.1315.A) designed for motocross use and maintenance of Honda CR 250 R (ME03) 1994-1996. Machined aluminum piston with a domed head and reed machining, intended for standard replacement with oversize A (Ø 66.340 mm).
This PROX cast piston is aimed at riders looking for a robust replacement part sized for oversize cylinders in the workshop. The MoS2 treated skirt reduces hot friction and eases the initial break-in period, while the reed machining ensures compatibility with the transfer passages typical of motocross engines.
Compatible replacement parts: rings 260253, pin 032042, clips CP1812, needle cage 400403. Before installation, check the condition of the cylinder, the piston/cylinder clearance, and replace the rings and needle cage if necessary.
Product suitable for Honda CR 250 R (ME03) 1994, 1995, and 1996. Installation recommended by a mechanic or experienced enthusiast to ensure tolerances and engine timing are respected.