PROX 97mm PISTON KIT YAMAHA YZ450F 03-09, WR450F 03-15, GAS GAS EC450F 13-15

Froged Piston KIT 97.00 mm Bore. STD. Compression 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 PISTON PIN 04.1849, PROX CLIPS 05.1814,

Yamaha YZ450F (2003-2009), Yamaha WR450F (2003-2015),
Gas-Gas EC450F (2013-2015),

PROX 01.2424.200