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...

Count down the laps with FMF Large dry erase surface on one side, large FMF logo on the other Sold each

All new incorporating the latest in Resonance Chamber Technology Patented core shape lowers sound level while maintaining maximum power output Patented canister shape increases internal volume for...

Original FMF quality part Forestry approved Sold each 1-3/4 inch diameter

Original FMF manufactured part Made from quality American made materials

Titanium Muffler with stainless steel midpipe Optimally design to complete performance of FMF pipes Can be used wth stock pipe or FMF pipe Delivers a crisp, notable sound With these lightweight oval...

Hi-Flo end cap boosts all-around performance Computer designed and dyno-tested for every 4-stroke application Enhanced sonic evacuation delivers a higher flow of exhaust gases, which increases...

FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage Spark Arrestor and Quiet Core 94db insert included Internal ducts in the chambers of the RCT system increase...

Fits Factory 4.1, Factory 4.1 C, and Factory 4.1 RCT Mufflers. Forestry approved Original FMF Part