Aftermarket Exhausts Systems are one of the most popular upgrades for any 2016-2022 Chevy 2.8L Duramax. An aftermarket exhaust will typically add horsepower/torque, lower the exhaust gas temperatures (EGT's), and can also improve engine efficiency. Exhaust systems can be offered in either 4" or 5" diameters, depending on your needs and preference. As soon as you begin looking for an exhaust, you will see a variety of construction choices and price points. Exhaust systems can be constructed in either stainless steel or aluminized steel and are available from many manufacturers. Installation is typically a straight forward installation and can be completed in your driveway with simple hand tools. All of the top manufacturers, including MBRP, Magnaflow, AFE, Banks Power, AP Emission Technologies, and more, are available today!