Piston 4-STK KIT 57.50 mm 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.
Cross reference numbers ONLY. HONDA OEM -324-

Replacements parts. PROX RING SET 02.1175.100, PROX PISTON PIN PROX CLIPS 05.1510,

Honda XL125 (1977-1978), Honda CB125S (1950-2014),

PROX 01.1175.100