aFe LARGE BORE HD 5in 409 - SS DPF - Back Exhaust wPolished Tip 2017 GM Duramax V8 - 6.6L (td) L5P

Simple Installation All systems use factory mounting locations providing stability and hassle - free installation. Leak - Free Seal High quality band clamps are included for a complete 360 degree sealing surface. OE Fit OE - style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions. The bayonet tip holds the hanger bushing in place for an OE - style fit that does not change with time. Flow and Performance This Large Bore - HD exhaust system is constructed of 5 mandrel - bent 409 stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT's. 6 Diameter Polished Intercooled Tip Finishing off the exhaust is a 6 diameter, high luster polished, stainless steel slash cut tip with intercooling vents designed to reduce exhaust gas temperatures at the tailpipe. A unique stainless steel laser - cut powder - coated black aFe Power logo plate is riveted on for an aggressive style.