Seller notes

FMF Powercore 4 Slip On Exhaust Silencer Muffler YAMAHA YZ WR 250F 450F FMF’s Power Core IV S/A Silencer aims to give your motorcycle, UTV, or ATV a near perfect balance of price, durability, and performance that won’t leave you wanting anything else. Cues for performance were taken from FMF’s top of the line exhaust systems for a solid boost to both horsepower and torque. And with that power you still have the option to run either a USFS approved spark arrestor or optional 96db quiet core...

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