FMF Factory 4.1 RCT Muffler 044406 1821-1535 Guide Bushing Set Optional shift direction

Optional shift direction

Microfiber with technical texture and shift pad for protection and durability

as well as proprietary camshaft analysis and spring design software to ensure consistent performance and accurate designs

Expanding knurled insert allows for single point mounting

Durable clear PVC shell

FMF Factory 4.1 RCT Muffler 044406 1821-1535 Guide Bushing Set Optional shift directionThe Factory 4. 1 RCT incorporates FMF's Resonance Chamber Technology both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their 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 their exacting specifications and is manufactured 100% at their