FMF Factory 4.1 RCT SL Slip-On Exhaust

FMF’s Factory 4.1 RCT SL slip-on muffler incorporates the latest in RCT (Resonance Chamber Technology) both internally and externally. The core’s shape lowers decibels without compromising power output. In addition, FMF designed the muffler specifically to achieve a shorter overall length so as to be less susceptible to crash damage. Complementary to FMF’s Factory Forward Engineering, the muffler is also moved closer to the motor to centralize mass and improve handling. Each FMF Factory 4.1 RCT slip-on muffler is constructed from only aerospace grade materials that meet the California company’s exacting specifications.

Massive power gains throughout the RPM range

Huge weight savings when compared to the stock muffler

Fabricated using the highest quality proprietary blend of alloy grade materials

FMF RTS (Rapid Tuning System) makes for easy exhaust insert changes

Includes USFS-approved spark arrestor and 94 dB sound insert

Fits OEM or FMF headers

Comes with all required mounting hardware and easy-to-follow installation instructions

Made in the USA

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