Introducing the Factory 4.1 RCT by FMF Racing, where cutting-edge technology meets precision engineering for unrivaled performance. Incorporating the latest in FMF Resonance Chamber Technology™ both internally and externally, this muffler sets the standard for power and durability on the track or trail. With a shorter overall length, the Factory 4.
Mann iam so glad I spent the money to get the FMF titanium it sounds ridiculously better then the other competitors. Much smaller and compact also is what I like so much to. It is pricey but worth it in the long run.