Features

• 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)

FITMENT

KTM

• KTM 250 SX-F 2007-2015
• KTM 250 XC-F 2007-2015
• KTM 250 XCF-W 2004-2014
• KTM 350 SX-F 2007-2015
• KTM 350 XC-F 2007-2015
• KTM 450 SX-F 2007-2015
• KTM 450 XC-F 2007-2015
• KTM 450 XCF-W 2008-2014
• KTM 450 SMR 2007-2010

Husqvarna

• FE 250 2014-2015
• FE 350 2014-2015

PROPOSITION 65

⚠WARNING

This product can expose you to chemicals known to the State of California to cause Cancer or birth defects and reproductive harm. For more information go to: https://oehha.ca.gov/proposition-65