Pro X Valve And Spring Kit - 28.SES2402-1 For Gas Gas 250F / 300F 2010-2015 | Yamaha WR 250 / YZ 250 2001-2013 Brand_Hot Cams and Medium helmets

and Medium helmets

Increases power and drivability

Heavy-duty nut fits flywheel-side of sprocket shaft

2-ply grip to reduce vibration

Model Pro-Lite Series Mounting Position Front Left Product Name Brake Rotor Color/Finish Silver Shape Round Units Each Riding Style Street Material Stainless Steel Mounting Position Rear Type Two Piece (Floating) Mounting Position Front Right

Pro X Valve And Spring Kit - 28.SES2402-1 For Gas Gas 250F / 300F 2010-2015 | Yamaha WR 250 / YZ 250 2001-2013 Brand_Hot Cams and Medium helmetsFeatures Replaces the OEM valves and valve springs Steel, nitrided valves for increased durability and less wear under extreme conditions Stronger valve springs deal with the extra weight of the steel valves Springs are made from premium chrome vanadium steel for higher performance and durability at high rpm Kit contains a set of steel intake or exhaust valves plus a set of specially designed valve springs; can be installed using the OEM retainers,