Seller notes

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 FMFs 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 FMFs exacting specifications and is manufactured 100% at their Southern California factory Massive Power gains throughout the RPM range. Huge we...

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