Description
If you’re serious about extracting maximum power from your machine while cutting unnecessary weight, the FMF Factory 4.1 RCT delivers measurable gains across the entire RPM range without compromise. By centralizing mass closer to the motor through Factory Forward Engineering, this muffler improves your bike’s handling and responsiveness—not just horsepower. Built entirely in Southern California from aerospace-grade materials, it’s engineered to outperform and outlast competitors in the most demanding conditions.
- Resonance Chamber Technology™ (internal/external)
- Aerospace-grade aluminum construction
- 100% Southern California manufactured
- Shorter overall length
- Reduced crash vulnerability
- Centralized mass design
- Power gains across RPM range
- Significant weight savings
- RTS (Rapid Tuning System)
- Bolt-on installation
- MPN: 042374
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