Description & Size Guide
Factory 4.1 RCT Slip-On MufflerThe 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 Southern California factory Massive Power gains throughout the RPM range. Huge weight savings RTS (Rapid Tuning System) Yamaha YFZ 450 R 2019-2021 Yamaha YFZ 450 R 2018 Yamaha YFZ 450 R 2009-2017 Yamaha YFZ 450 R 2012-2016 Yamaha YFZ 450 RSE 2019-2020 Yamaha YFZ 450 RSE 2018 Yamaha YFZ 450 RSE 2009-2017 Yamaha YFZ 450 RSE 2012-2016 Yamaha YFZ 450 X 2010-2011 Yamaha YFZ 450 XBB 2010 Yamaha YFZ 450 XSE 2011
This part fits the below bikes:
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