FMF is the leader in high performance quiet technology and our Q4 HEX is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material...

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash...

FMF created the Powercore 2.1 Shorty Silencer, which utilizes a shorter aluminum canister and inner core. This design decreases the amount of back pressure in the muffler, which on a 2-stroke will...

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash...

When designing the PowerCore 4 HEX, we looked at our top of the line products to deliver race-inspired performance. The end result is a quality muffler with improved torque, increased horsepower and...

The ultimate power booster Improved bottom to mid-range power Produce the low end of a longer header and the top end of a short header Less susceptible to damage than a long header Effectively...

The science behind the Megabomb header may be our greatest engineering accomplishment to date. You can pay an engine builder thousands or bolt on a Megabomb for as much as a 3hp boost! Plus, the...

Utilizes FMF's patented module precisely located at the initial stage of the header position "Bomb" increases performance; horsepower is increased as much as 10% Acts as...