FMF Racing Factory 4.1 RCT Slip-On Muffler

Part Number: 042290

• Constructed from only aerospace grade materials that meets FMF exact specifications
• Shorter overall length is less susceptible to crash damage
• Shorter length design moves the muffler closer to the motor and improves centralize mass
• Greater canister volume helps reduce sound and increases packing life
• Race team tested and approved
• 100% Made in the USA

​​Massive power gains throughout the RPM range. FMF® uses the highest-quality proprietary blend of alloy titanium made especially to our standards. Quieter than stock. Huge weight savings. RTS (Rapid Tuning System) makes for easy sound insert changes as well as adding US Forestry-approved Spark Arrestor.

• Muffler: Aluminum
• End Cap: Carbon Fiber