FMF Powercore 4 Exhaust Silencer For Yamaha YFM 250 R Raptor 2008-2013
FMF developed the PowerCore 4 to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and compatible with every style of riding. Yamaha YFM 250 R Raptor 2008-2013.