Piston 2-STK KIT 54.00mm Bore.
Ready to install, ProX Piston Kits are supplied complete with piston rings, wrist pin, and circlips. - ProX pistons are precision machined on the latest, state

of the art CNC equipment and use the same low-expansion, low-friction piston alloy all major Japanese engine manufacturers use. - Uses an OEM style tin coating to assist the break-in process when you first start your machine.
REPLACEMENT PARTS. PISTON RINGS. 02.2214, PISTON PIN. 04.1545.8,

PISTON CLIPS. 05.1510,

Yamaha YZ125 (1997-2001),

PROX 01.2217.C