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FMF Factory 4.1 RCT Slip-On KTM

FMF Factory 4.1 RCT Slip-On KTM


Massive power gains throughout the RPM range. Huge weight savings. New RTS (Rapid Tuning System). FMF uses the highest-quality proprietary blend of alloy-grade titanium made especially to our standards.
  • Constructed from only aerospace grade materials that meet FMF exact specifications
  • Shorter overall length is less susceptible to crash damage and is complementary to FMF's Factory Forward Engineering
  • Shorter length design moves the muffler closer to the motor and centralizes mass
  • Greater canister volume reduces sound and increases packing life
  • Race team tested and approved
  • 100% manufactured in Southern California