FMF Powercore 4 Muffler Slip-On

When designing the PowerCore4, we looked at our top of the line products to deliver race-inspired performance at an economical price. The end result is a quality muffler with improved torque, increased horsepower and rugged durability all at a price that won’t break the bank.


Some offroad models may contain emission control devices. Some aftermarket parts may remove these devices. Removal or modification of such devices is illegal in the State of California unless used exclusively for closed course competition use ONLY, never to be used on public lands or highways.