FMF Factory 4.1 RCT Muffler - Aluminum 045558 1821-1633 Shock Bumper shockproof and easy to install

shockproof and easy to install with a spring base

Core EXP 3

The Warm setting makes that the target temperature for the tire about 135F- the Hot setting makes the target about 175F

Designed to fit OEM primary covers on select Harley Davidson Big Twins

DFS armor delivers optimal resistance against impacts and abrasion

FMF Factory 4.1 RCT Muffler - Aluminum 045558 1821-1633 Shock Bumper shockproof and easy to installThe 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