FMFFactory 4.1 Rct Exhaust System Natural

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output


Internal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the entire range of power


FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage


Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor with the removal of four screws


Meets AMA and FIM sound requirements


QuietCore 94 dB insert included


Made in the U.S.A.


NOTE: Will not pass 2025 FIM sound regulation