Aftermarket Exhaust Systems are one of the most popular modifications for any 2007.5-2010 Chevy/GMC 6.6L LMM Duramax. 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. 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. Adding an exhaust is typically a DIY installation and can be done right in your driveway with basic hand tools. You can find all the top exhaust brands such as MBRP, Magnaflow, AFE, Banks Power, AP Emission Technologies and more!
