Product Description: Interested in improving the looks, flow, and performance on your 2016 GM 6.6L Duramax? You’re in luck because aFe’s Large Bore-HD 5” 409 Stainless Steel DPF-Back Exhaust system provides just that. This system is constructed from 5" mandrel-bent 409 stainless steel tubing and uses high quality band clamps and OE-style bayonet hangers. This unit uses all factory mounting locations to provide a quick, hassle-free installation. Large Bore-HD exhaust systems are the perfect combination of performance, fit and value.

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 stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT’s.

6” Intercooled Tip:

Finishing off the exhaust is a 6" diameter, high luster polished or black powdercoated stainless steel slash cut tip with intercooling vents designed to reduce exhaust gas temperatures at the tailpipe. A unique stainless steel laser-cut aFe Power logo plate is riveted on for an aggressive style.