aFe Power Large Bore-HD DPF-Back Exhaust System for 2021 Ford F-150(49-43143-P) 5019 First is the smooth inner

First is the smooth inner surface

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weight is transferred from the front to the back

aFe Power Large Bore-HD DPF-Back Exhaust System for 2021 Ford F-150(49-43143-P) 5019 First is the smooth innerLarge Bore HD 4 IN 409 Stainless Steel DPF Back Exhaust System w Polished Tip. This DPF back exhaust system is constructed of 4 IN mandrel bent 409 stainless steel tubing for maximum strength and durability. Finishing off this exhaust system is a 5 IN diameter polished 304 stainless steel intercooled clamp on exhaust tip. The tip features an aFe POWER logo plate riveted on for a unique style. This system produces a throaty sound unleashing all