aFe Power Diesel DPF-Back Exhaust System for Ford F-250 Super Duty Power-Stroke 2017 - 2021

Flow and Performance: This Large Bore-HD exhaust system is 100% hand MIG-welded and Constructed from 5" mandrel-bent 409 stainless steel tubing for maximum flow. The smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT's. A mitered merge collector is also incorporated to eliminate dead space that can cause turbulence and hinder flow. Some cutting is required. Intercooling Tailpipe: This system is designed with Intercooling tailpipes, to reduce exhaust gas temperatures at the tailpipe. Perfect Fit: This system uses all factory mounting locations providing stability and hassle-free installation. Includes OE-style bayonet hangers which 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. 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 black powder-coated aFe Power logo plate is riveted on for an aggressive style. Fits: Single Cab/Long Bed (141. 6" Wheelbase) Extended Cab/Short Bed (148" Wheelbase) Extended Cab/Long Bed (164. 2" Wheelbase) Crew Cab/Long Bed (176" Wheelbase) Crew Cab/Short Bed (159. 8" Wheelbase) Note:This system requires cutting behind the DPF unit.Emissions Disclaimer: This product does not require a CARB EO# All aFe exhaust systems are engineered and manufactured in our Corona, California facility.