Prox Forged Piston kitRef : PRO00301A / 1095625003

PROX Forged Piston designed for motocross: original PROX part (manufacturer reference 01.2427.C). Machined and forged aluminum piston, supplied as a kit with rings, intended for preparations and replacements on listed 426 cm3 engines. Ideal for those seeking a robust replacement part suitable for off-road conditions.

• Diameter: Ø 94.970 mm (Ø 94.97 mm)
• Oversize: Letter C (indicates the oversize dimension)
• Compression: Standard
• Material: Forged aluminum
• Number of rings: Kit (rings included) — replacement rings: 260127
• Category: Piston — Universe: Motocross

This PROX piston is aimed at riders and mechanics who want to replace a worn piston or install a recognized oversize dimension (“C”). The forged design and precise machining ensure geometry suited for the combustion chamber and the supplied ring set, providing a reliable overhaul of the top end.

Main compatibilities:

• YAMAHA YZ 426 F (CJ01) – 2002
• YAMAHA WR 426 F (CJ02) – 2002
• YAMAHA YZ 426 F (CJ01) – 2001

Check the diameter and the oversize letter before installation to ensure proper fit with the cylinder and gasket kit. For ring replacement: reference 260127.