FMF Racing Powercore 4 Aluminum Slip-On Muffler w/Stainless End Cap for Yamaha YFZ450 04-09 & 12-15 • Will not work with

• Will not work with Ness-Tech

Available in chrome or black

5 slip-ons features black CNC machined endcap wrapped around an exclusive internal chrome

NOTE:  NOT FOR USE WITH CORBIN SEATS

Red Lens & without Number Plate Window

FMF Racing Powercore 4 Aluminum Slip-On Muffler w/Stainless End Cap for Yamaha YFZ450 04-09 & 12-15 • Will not work withWe developed the PowerCore4 to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is useable and compatible with every style of riding. Aluminum construction and stainless steel Hi Flo endcaps make for the perfect balance of performance and strength. Aluminum performance muffler with durable stainless steel components Completely redesigned for all late model applications Removable spark