FMF Factory 4.1 RCT Muffler - Aluminum CRF250R 2011-2013 041473 1821-1385 X-Force Handguards supporting a 6% adaptability ratio

supporting a 6% adaptability ratio which is 80% more than that offered by regular bovine leather

Made from the highest-quality select steel alloys

Integrated internal velocity stack

Great for camping or at the track

Highest shock load rating to date being able to withstand the power of the 400hp machines

FMF Factory 4.1 RCT Muffler - Aluminum CRF250R 2011-2013 041473 1821-1385 X-Force Handguards supporting a 6% adaptability ratioThe 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