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Replaces Yamaha OEM part numbers:
race-proven power curve
The Kibblewhite Performance OEM/Stock Size Replacement Valves for your Honda XR400R are an exhaust-upgrading must-have
Heavy duty CP Carrillo rods handle higher RPMs and turbo boost without failure
ProX Piston Kit Yamaha YZ450F '03-09 / WR450F '03-15 Stock 12.5:1 95mm (94.97mm) 13032-0047 Replaces Yamaha OEM part numbers:Shop 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
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