The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our 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 our exacting specifications and is manufactured 100% at our Southern California factory.
- Highest-quality proprietary blend of alloy grade titanium
- Blue anodized titanium muffler with carbon end cap
- Massive power gains throughout the RPM range
- Rapid Tuning System (RTS)
Designed To Fit:
2015 KTM 250 SX-F Factory Edition
2015 KTM 450 SX-F Factory Edition
2016 Husqvarna FC250
2016 Husqvarna FC350
2016 Husqvarna FC450
2016 KTM 250 EXC-F
2016 KTM 250 SX-F
2016 KTM 250 SX-F Factory Edition
2016 KTM 250 XC-F
2016 KTM 350 EXC-F
2016 KTM 350 SX-F
2016 KTM 350 XC-F
2016 KTM 450 SX-F
2016 KTM 450 SX-F Factory Edition
2016 KTM 450 XC-F
2017 Husqvarna FC250
2017 Husqvarna FC350
2017 Husqvarna FC450
2017 Husqvarna FE250
2017 Husqvarna FE350
2017 Husqvarna FE350S
2017 Husqvarna FE450
2017 Husqvarna FE501
2017 Husqvarna FE501S
2017 Husqvarna FX350
2017 Husqvarna Fx450
2017 KTM 250 EXC-F
2017 KTM 250 SX-F
2017 KTM 250 XC-F
2017 KTM 350 EXC-F
2017 KTM 350 SX-F
2017 KTM 350 XC-F
2017 KTM 450 EXC-F
2017 KTM 450 EXC-F Six Days
2017 KTM 450 SX-F
2017 KTM 450 SX-F Factory Edition
2017 KTM 450 XC-F
2017 KTM 500 EXC-F
2017 KTM 500 EXC-F Six Days
2018 Husqvarna FC250
2018 Husqvarna FC350
2018 Husqvarna FC450
2018 Husqvarna FE250
2018 Husqvarna FE350
2018 Husqvarna FE350S
2018 Husqvarna FE450
2018 Husqvarna FE501
2018 Husqvarna FE501S
2018 Husqvarna FX350
2018 Husqvarna Fx450
2018 KTM 250 EXC-F
2018 KTM 250 SX-F
2018 KTM 250 XC-F
2018 KTM 350 EXC-F
2018 KTM 350 SX-F
2018 KTM 350 XC-F
2018 KTM 450 EXC-F
2018 KTM 450 EXC-F Six Days
2018 KTM 450 SX-F
2018 KTM 450 XC-F
2018 KTM 500 EXC-F
2018 KTM 500 EXC-F Six Days
2019 Husqvarna FE250
2019 Husqvarna FE350
2019 Husqvarna FE350S
2019 Husqvarna FE450
2019 Husqvarna FE501
2019 Husqvarna FE501S
2019 KTM 250 EXC-F
2019 KTM 350 EXC-F
2019 KTM 450 EXC-F
2019 KTM 450 EXC-F Six Days
2019 KTM 500 EXC-F
2019 KTM 500 EXC-F Six Days
