Bike Fitment:

• Husqvarna FC 350 2019–2022
• Husqvarna FC 450 2019–2021
• Husqvarna FC 450 Rockstar Edition 2018–2021
• Husqvarna FS 450 2019–2022
• Husqvarna FX 350 2019–2022
• Husqvarna FX 450 2019–2022

The FMF 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.

• Blue Anodized Titanium Muffler with Carbon End Cap.
• New RTS (Rapid Tuning System).
• Significantly lighter than OEM Muffler.
• 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.
• Closed course/competition use only.