4" 409 Stainless Steel Construction: This cat-back exhaust system is constructed of 4" mandrel-bent 409 stainless steel tubing for maximum strength and durability. High-Flow 409 Stainless Steel Muffler: This system features a high-flow 409 stainless steel muffler, producing a deep sound. 5" Diameter Polished Intercooled Exhaust Tip: Finishing off this exhaust system is a 5" diameter polished 409 stainless steel intercooled clamp-on exhaust tip. The tip features an aFe POWER logo plate riveted on 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 cat-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. This item fits: Crew Cab/Short Bed ( 69. 3" Box), 143. 5" Wheelbase, Crew Cab/Long Bed (78. 8" Box), 143. 5" Wheelbase, Extended Cab/Long Bed (78. 8" Box) 153" Wheelbase Emissions Disclaimer: This product does not require a CARB EO#. aFe POWER exhaust systems are engineered and manufactured in our Corona, California facility.