The AFE 49-44125 Large Bore HD 5 Inch Filter-Back Exhaust System is the perfect way to add more power and sound to your L5P Duramax 2020-2021. This 100% MIG-Welded exhaust system uses factory style flanges and hangers, and is made from 5" mandrel-bent 409 stainless steel tubing. It comes with all the necessary hardware for a hassle-free installation, and includes a 6" diameter black or polished 304 stainless steel intercooled exhaust tip. If you're looking for an easy way to increase power and sound, this is the exhaust system for you.