The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology™ both internally and externally
Shorter overall length that is less susceptible to crash damage and complementary to FMF’s 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 FMF’s exacting specifications and is manufactured 100% at their Southern California factory
Massive Power gains throughout the RPM range.
Huge weight savings
New RTS (Rapid Tuning System)
Includes MegaBomb header
Includes spark arrestor screen insert
NOTE: Will not pass 2025 FIM sound regulation
Includes 94dB insert.
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