ProX Piston Kit Yamaha YZ450F '03-09 / WR450F '03-15 Stock 12.5:1 95mm (94.97mm) 13032-0047 Cometic top-end gasket kit with

Cometic top-end gasket kit with one-piece base gasket

race-proven power curve

Complete set

WORKS ON ALL YAMAHA '08-14 & '19+ GRIZZLY 700 AND ALL '19+ KODIAK 700 MODELS

The Kibblewhite Performance OEM/Stock Size Replacement Valves for your Honda XR400R are an exhaust-upgrading must-have

ProX Piston Kit Yamaha YZ450F '03-09 / WR450F '03-15 Stock 12.5:1 95mm (94.97mm) 13032-0047 Cometic top-end gasket kit withShop ProX 94. 97mm piston kit for Yamaha YZ450F & WR450F 2003 2015. High performance 12. 5: 1 compression, OEM fit, complete rebuild solution. ProX Piston Kit 94. 97mm 12. 5: 1 Yamaha YZ450F 2003 2009 WR450F 2003 2015 Product Description Upgrade your engine performance with the ProX Piston Kit 94. 97mm, engineered specifically for Yamaha YZ450F and WR450F models. Designed using premium low expansion piston alloy and precision CNC machining, this kit