FMF Racing Yamaha YZ450F 18-26/WR450F (2019)/ YZ450FX 19-24 Hex Q4 S/A Muffler

This FMF Racing Hex Q4 S/A Muffler is designed for specific Yamaha off-road models, including the YZ450F from 2018-2021, the WR450F in 2019, and the YZ450FX from 2019-2020. It's built to enhance your bike's exhaust system, offering a noticeable improvement in performance and sound management.

At the heart of this muffler is FMF's patented Power Bomb module. Positioned early in the header system, this component works by managing the expansion and contraction of exhaust sonics. This design leads to an estimated 10% increase in flow, helping your engine breathe more freely. The perforated core allows sound waves to reach the steel wool packing, where they are absorbed. This process also cools the gases and allows them to expand, effectively acting as a pre-muffler that reduces the overall sound output of your motorcycle.

This muffler is a well-built option for riders looking to get more out of their exhaust system. It's designed to integrate with your bike's existing header setup, providing a direct upgrade for improved performance and a more controlled sound level.