Description
- 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)






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