Fmf Factory 4.1 Rct Muffler - Aluminum 045558

• The 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)

KTM -- 250 XC-F -- (2011, 2007, 2012, 2013, 2015, 2009, 2008, 2010, 2014); KTM -- 450 SMR -- (2009, 2007, 2010, 2008); KTM -- 450 XC-F -- (2011, 2012, 2015, 2013, 2014, 2008, 2009, 2010, 2007); KTM -- 250 SX-F -- (2012, 2014, 2015, 2011, 2009, 2008, 2010, 2007, 2013); KTM -- 350 XC-F -- (2011, 2015, 2007, 2013, 2014, 2009, 2012, 2008, 2010); KTM -- 350 SX-F -- (2008, 2010, 2011, 2009, 2007, 2013, 2014, 2012, 2015); KTM -- 250 XCF-W 4-Stroke -- (2011, 2009, 2013, 2008, 2004, 2014, 2012, 2006, 2010, 2007, 2005); KTM -- 450 SX-F -- (2012, 2013, 2015, 2007, 2009, 2011, 2010, 2014, 2008); KTM -- 450 XCF-W -- (2013, 2010, 2008, 2014, 2009, 2011, 2012); Husqvarna -- FE 350 -- (2015, 2014); Husqvarna -- FE 250 -- (2014, 2015)