FMF - Factory 4.1 Rct


  • Complete systems and slip-on mufflers
  • 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
  • Compatible with stock header or FMF header
  • Meets AMA and FIM sound requirements
  • QuietCore 94 dB insert included
  • Spark arrestor included in muffler
  • Systems feature titanium PowerBomb header and midpipe, except where noted
  • Available in natural titanium or blue anodized finish with titanium or carbon fiber end caps
  • Some systems include Bazzaz Z-Fi Fuel Control unit which precisely controls fuel delivery and exhaust flow; mount using stock connections and installation points
  • Made in the U.S.A.