Don't let your 2013-2018 6.7 Cummins get held back by its stock exhaust system. The Banks Power 49777 5 Inch Single Monster Exhaust System virtually eliminates backpressure after the DPF, for morehp and torque. It's made of constant-diameter 5" mandrel-bent aluminized steel tubing for less backpressure than stock. Plus, it has a huge patented 6.5" x 7.5" ob-round slash-cut exhaust tip in chrome-plated stainless that will not turn brown with heat. Get more out of your engine with the Banks Power 49777 5 Inch Single Monster Exhaust System.