aFe Power Diesel DPF-Back Exhaust System for GMC Sierra 1500 2020 - 2021

3" 409 Stainless Steel Construction: This DPF-back exhaust system is constructed of 3" mandrel-bent 409 stainless steel tubing for maximum strength and durability.4-1/2" Diameter Polished Exhaust Tip: Finishing off this exhaust system is a 4-1/2" diameter polished 304 stainless steel clamp-on exhaust tip. The tip features a laser etched aFe POWER logo for a unique style.Installation: Utilizing factory style hangers this system is a direct bolt-on system, which requires no cutting or modifications for a hassle-free installation.Interlock Flex Pipe: This DPF-back exhaust system uses a heavy duty flex pipe with an internal interlock liner for added strength and durability.Computer-Aided Design: Utilizing state-of-the-art computer-aided design technology, this exhaust system is designed for custom, high tolerance factory fitment.MIG-Welded: 100% MIG-Welded for race-proven strength and durability.Exhaust Gas Temperatures: Intercooled tubing provides reduction in exhaust gas temperatures.Fitment Note: Crew Cab / Short Bed-147. 4" Wheelbase Extended Cab / Standard Bed-147. 4" Wheelbase Crew Cab / Standard bed-157" WheelbaseEmissions Disclaimer: This product does not require a CARB EO#.aFe POWER exhaust systems are engineered and manufactured in our Corona, California facility.