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 the two-button control module attaches

the two-button control module attaches to the helmet’s shell for easy control access and a minimalist look

and Medium helmets

25 mm Material Steel Product Name Plug Thread Diameter 12 mm Type O2 Sensor Riding Style Street Units Each

Increases power and drivability

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 the two-button control module attachesFeatures 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,