FMF Factory 4.1 RCT Yamaha - 044486

Developed with Championship winning Factory STAR Racing Yamaha, the Factory 4.1 Titanium Systems delivers unmatched power, reduced weight and the signature FMF Factory look.

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering - moving the muffler closer to the motor to centralize mass. The Factory 4.1 RCT is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100% at our Southern California factory.

Available in Blue Anodized Titanium Muffler with Blue Carbon Fiber End Cap

Massive Power gains throughout the RPM range

Lightweight design

New RTS (Rapid Tuning System)

Hi-flo performance Core

Improved throttle response

Direct bolt-on installation

FMF uses the highest quality proprietary blend of alloy grade titanium made especially to our standards

⚠ WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.p65warnings.ca.gov.