The FMF ATV Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, They achieve a shorter overall length that is less susceptible to crash damage and complementary to our FMF Factory Forward Engineering - moving the ATV muffler Slip-on closer to the motor to centralize mass. The ATV Factory 4.1 RCT Slip-on is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100% at our Southern California factory. Yamaha YFZ450r & Honda TRX450R

Stainless/Blue Anodized Titanium/Carbon Fiber

• Available in Blue Anodized Titanium Muffler with Carbon End Cap
• Massive Power gains throughout the RPM range
• Huge weight savings
• New RTS (Rapid Tuning System)
• FMF uses the highest quality proprietary blend of alloy grade titanium made especially to our standards
• Can be used with FMF or Stock OEM Header
• Includes screen type spark arrestor
• Quiet insert sold separately
• 2014 - TRX450R
  2013 - TRX450R
  2012 - TRX450R
  2009 - TRX450R
  2008 - TRX450R
  2007 - TRX450R
  2006 - TRX450R