Description
The FMF Factory 4.1 RCT Slip-On Muffler is designed for maximum performance and durability. Incorporating FMF’s patented Resonance Chamber Technology™ both internally and externally, this system features a shorter overall length for reduced crash damage vulnerability and centralized mass. Constructed entirely from aerospace-grade titanium and finished with a carbon fiber end cap, this muffler is built for serious riders. Tuned for optimal power output, the Factory 4.1 RCT is manufactured 100% in FMF’s Southern California facility. For closed course competition use only.










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