Wiseco 03-09 YZ450F Steel Valve Kit 2001-yamaha-yfm660r-raptor-esi5498386 & Magnum and is dyno

& Magnum and is dyno tested to provide a guaranteed increase in horsepower

For projects extending beyond one hour

thicknesses

K&N air intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow

Wiseco 03-09 YZ450F Steel Valve Kit 2001-yamaha-yfm660r-raptor-esi5498386 & Magnum and is dynoWiseco valvetrain components have riders and racers covered from stock rebuilds to race engines. Titanium valves, Garage Buddy steel valve kits, cam chains, and valve shims help set you up for four stroke head rebuild success. This Part Fits: Year Make Model Submodel 2013 2015 Gas Gas EC 450F Base 2003 2015 Yamaha WR450F Base 2004 2017 Yamaha YFZ450 Base 2009 2024 Yamaha YFZ450R Base 2003 2009 Yamaha YZ450F Base