3-RING Piston KIT 79.00 mm Bore STD Compresion 12.5:1

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.

Replacements parts. PROX RING SET PROX PIN 04.1644.4, PROX CLIPS 05.1610

Yamaha WR250F (2001-2013), Yamaha YZ250F (2001-2007),
Gas-Gas EC250F 4T (2010-2015),

PROX 01.2401.200