PISTON KIT 04-11 XT660R 100 B, PROX 01.2664.B YAMAHA

Forged Piston KIT 100.00mm Bore.

Compression Ratio – Actual: 10:1
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.

Yamaha XT660R (2004-2011), Yamaha XT660X (2004-2011), Yamaha MT-03 (2006-2011), Yamaha XTZ 660 Tenere (2008-2012,

PROX 01.2664.B