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About FMF Factory 4.1 RCT Full Systems

FMF Factory 4.1 RCT Full Systems

  • Incorporating Resonance Chamber Technology
  • Patented core shape lowers sound level while maintaining maximum power output
  • Patented canister shape increases internal volume for more sound absorbing material
  • Patented chamber design to enhance and refine exhaust pressure
  • Factory Forward Engineering centralizes mass and is less prone to crash damage
  • Tuned exhaust with optimized core specifications for each application
  • Comes with the quality, craftsmanship and performance expected from FMF
  • Meets AMA and FIM sound requirements
  • QuietCore 94db insert included
  • Spark arrestor included in muffler
  • Built 100% in the USA at FMFs state-of-the-art-factory
  • Maintenance made easy with the removal of 4 screws on the front end cap.
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