FMF Racing KTM 350-450SXF/XCF 18-22/HQV FC/FX350-450 19-22/GGMC/EX350F-450F 21-23 AL F4.1 SO w/C Cap

If you're looking to get the most out of your 2019-2021 KTM 350 SX-F or 450 SX-F, this FMF Racing Factory 4.1 RCT muffler is a solid choice. It's designed to bolt right up, making installation straightforward for riders who want to improve their bike's performance. This muffler is all about extracting more power across the entire range of your engine's revolutions, giving you a noticeable boost when you need it most.

FMF builds this muffler using a proprietary blend of aerospace-grade titanium, which is known for being both strong and lightweight. The muffler itself has a blue anodized titanium finish, and it's capped off with a carbon fiber end cap, giving your bike a factory race look. They've also incorporated their Resonance Chamber Technology, both inside and out, to help tune the exhaust note and improve performance. A key design feature is its shorter overall length, which not only looks good but also moves the muffler closer to the motor. This centralization of mass helps improve the bike's handling by keeping weight tucked in.

This muffler is manufactured entirely at FMF's Southern California factory, ensuring it meets their strict standards. It also features their Rapid Tuning System (RTS), which allows for quick adjustments to fine-tune the exhaust's performance. If you're aiming for a significant improvement in power and a more race-ready setup for your KTM or Husqvarna, this FMF Racing muffler is a well-built option.