Looking to boost the performance of your Duramax engine? Check out the Banks 48633 Single Monster 4 Inch CAT-Back Exhaust System. This system is designed to lower exhaust gas temperatures and reduce in-cab drone for a more enjoyable driving experience. Constructed from durable mandrel bent stainless steel, this system is built to last. Plus, it comes with your choice of side exit chrome or black rolled-edge exhaust tip. And best of all, it's backed by a 5 year limited warranty. So don't wait any longer, order your Banks 48633 Single Monster 4 Inch CAT-Back Exhaust System today!