Pro-X Racing Forged Piston Kit for 1999-19 Yamaha YZ250 - 66.36mm - 01.2321.B 2009 Yamaha YFM450 Grizzly 450 4WD/4X4 / Hunter / Spec. Ed. return spring

return spring

1994 Polaris Indy XLT 580 SKS

(2) Round backing plate washers

2009 Honda TRX500 Fourtrax Foreman - 4x4

1997 Arctic-Cat 454 2x4

Pro-X Racing Forged Piston Kit for 1999-19 Yamaha YZ250 - 66.36mm - 01.2321.B 2009 Yamaha YFM450 Grizzly 450 4WD/4X4 / Hunter / Spec. Ed. return springPro X Racing Parts Piston Kit ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low expansion, low friction piston alloy is used as is used for all major Japanese engine manufacturers. ProX Piston Kits are a first class solution to replace the original piston in your Motorcycle, Scooter, Moped, ATV, Personal Watercraft, etc. Our OEM style Tin coated pistons assist the wear in process when you just started the