FMF Racing Factory 4.1 RCT Slip-On 42394 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.

• 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