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 available horsepower and torque. Utilizing factory style hangers this system is a direct bolt-on system, which requires no cutting or modifications for a hassle-free installation. 100% MIG-Welded for race-proven strength and durability.. Large Bore-HD 4 IN 409 Stainless Steel DPF-Back Exhaust System w/ Polished Tip Ford F-150 2021 V6-3.0L (td). aFe 2021 Ford F-150 V6-3.0L (td) Large Bore 409 SS DPF-Back Exhaust System w/ Polished Tip. Large Bore-HD 4 IN 409 Stainless Steel DPF-Back Exhaust System w/ Polished Tip. 5 IN Diameter Polished 304 stainless steel Intercooled Clamp-On Exhaust Tip. Constructed from 4 IN Mandrel-Bent 409 Stainless Steel Tubing. Utilizes Factory Style Hangers for a Secure Fit. 100% MIG-Welded for Strength and Durability. Large Bore-HD DPF-Back Exhaust System. DPF-Back Exhaust

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