FMF Powercore 4 Muffler 043210 1831-0478 Heavy Duty Clutch Spring Finger bridge on third and

Finger bridge on third and fourth fingers prevents finger roll and separation during impact

Upper constructed from a superbly lightweight

washer and gasket (where applicable)

2010-2011 Yamaha YFZ 450 X 4x2 - - 2009-2020 Yamaha YFZ 450R 4x2 - -

Triple chrome-plated for good looks that last

FMF Powercore 4 Muffler 043210 1831-0478 Heavy Duty Clutch Spring Finger bridge on third andFMF 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 Aluminum construction and stainless steel Hi Flo endcaps make for the perfect balance of performance and strength Removable spark arrestor included