FMF Factory 4.1 End Caps | 040641. A Now offering complete end cap rebuild kits. Whether it be for a Powercore 4, Q4, Factory 4.1 or the new RCT we have you handled. The kit includes Stainless Steel, Titanium, or Carbon Fiber (RCT Only) end cap, 3/16 stai... - FMF Factory 4.1 End Caps | 040641.
FMF 4 Stroke Silencer Packing | 010590. Premier series packing is made of fine interwoven fibers that have been blended to FMF's specifications for high heat resistance and sound absorptionStandard packing works great for M/X applications where maximum sound absorption isn't necessary... - FMF 4 Stroke Silencer Packing | 010590.