Enhance the performance and style of your 2020-2021 L5P Duramax with the MBRP 4 Inch Pro Series Filter-Back Exhaust System. This high-quality system features 4" mandrel-bent T304 stainless steel tubing for superior durability and flow. Easily installable, it replaces the factory muffler to deliver a bold exhaust tone that stands out. Built for longevity and high performance, the MBRP Pro Series ensures your Duramax runs smoothly while turning heads. Upgrade your ride today!