FACTORY 4.1 RCT STAINLESS SL (SLIP-ON) W/ CARBON END CAP 042411 KTM-500 XCF-W-2021 Join a global community of

Join a global community of riders with FMF & WLF

- Lightweight

Now older machines can be U

The Q4 employs intricate chambers

-Provides power gains throughout entire power band

FACTORY 4.1 RCT STAINLESS SL (SLIP-ON) W/ CARBON END CAP 042411 KTM-500 XCF-W-2021 Join a global community ofThe 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