FMF Factory 4.1 RCT Muffler - Anodized Titanium KX450F 2012-2015 042286 1821-1337 Replacement Valve Shims Constructed of lightweight 6061 T-6

Constructed of lightweight 6061 T-6 aluminum

Chest protector compartment can be upgraded with Alpinestars Nucleon chest protector insert

throttle control

YKK® zip on front with scratch saver for a secure closure

FMF Factory 4.1 RCT Muffler - Anodized Titanium KX450F 2012-2015 042286 1821-1337 Replacement Valve Shims Constructed of lightweight 6061 T-6The 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