This cat - back exhaust system is constructed of 3 mandrel - bent 409 stainless steel tubing for maximum strength and durability. This system features a high - flow 409 stainless steel muffler and a tuned helmholtz resonator, producing an aggressive sound. Finishing off this exhaust system are dual 4 - 12 diameter polished 304 stainless steel clamp - on exhaust tips. The tips features a laser etched aFe POWER logo for a unique style. This system produces an aggressive sound unleashing all available horsepower and torque. Utilizing a factory style flange and hangers this system is a direct bolt - on system, which requires no cutting or modifications for a hassle - free installation. Utilizing state - of - the - art computer - aided design technology, this exhaust system is designed for custom, high tolerance factory fitment. 100 MIG - Welded for race - proven strength and durability. Crew Cab Short Bed - 160 Wheelbase