aFe Large Bore-HD 4in 409SS DPF-Back Exhaust System w/Polished Tips 20 GM Diesel Trucks V8-6.6L

This DPF-back exhaust system is constructed of 4" mandrel-bent 409 stainless steel tubing for maximum strength and durability. Finishing off this exhaust system are dual 5" diameter polished 304 stainless steel intercooled clamp-on exhaust tips. The tips features an aFe POWER logo plate riveted on for a unique style. Some cutting may be required, see instruction sheet for further information. Utilizing factory style hangers this system mounts directly to factory mounting locations for a hassle-free installation. A mitered merge collector is used to decrease turbulence and increase exhaust velocity resulting in increased horsepower, torque and improved throttle response. Utilizing state-of-the-art computer-aided design technology, this exhaust system is designed for custom, high tolerance factory fitment. 100% MIG-Welded for race-proven strength and durability. This system fits: Double Cab / Short-Bed - 149.4" Wheelbase, Crew Cab / Short-Bed - 158.9" Wheelbase, Double Cab / Long-Bed - 162.4" Wheelbase, Crew Cab / Long-Bed - 172" Wheelbase Large Bore-HD 4 IN 409 Stainless Steel DPF-Back Exhaust System w/Polished Tip GM Diesel Trucks 2020 V8-6.6L (td) L5P GM Diesel Trucks 2020 V8-6.6L (td) L5P Fitment: ChevroletSilverado 2500 HDCustom2021 ChevroletSilverado 2500 HDHigh Country2020 ChevroletSilverado 2500 HDHigh Country2021 ChevroletSilverado 2500 HDLT2020 ChevroletSilverado 2500 HDLT2021 ChevroletSilverado 2500 HDLTZ2020 ChevroletSilverado 2500 HDLTZ2021 ChevroletSilverado 2500 HDWT2020 ChevroletSilverado 2500 HDWT2021 ChevroletSilverado 3500 HDHigh Country2020 ChevroletSilverado 3500 HDHigh Country2021 ChevroletSilverado 3500 HDLT2020 ChevroletSilverado 3500 HDLT2021 ChevroletSilverado 3500 HDLTZ2020 ChevroletSilverado 3500 HDLTZ2021 ChevroletSilverado 3500 HDWT2020 ChevroletSilverado 3500 HDWT2021 GMCSierra 2500 HDBase2020 GMCSierra 2500 HDBase2021 GMCSierra 2500 HDDenali2020 GMCSierra 2500 HDDenali2021 GMCSierra 2500 HDSLE2020 GMCSierra 2500 HDSLE2021 GMCSierra 2500 HDSLT2020 GMCSierra 2500 HDSLT2021 GMCSierra 3500 HDBase2020 GMCSierra 3500 HDBase2021 GMCSierra 3500 HDDenali2020 GMCSierra 3500 HDDenali2021 GMCSierra 3500 HDSLE2020 GMCSierra 3500 HDSLE2021 GMCSierra 3500 HDSLT2020 GMCSierra 3500 HDSLT2021