This system produced gains of up to +6 HP and +7 lbs. x Ft. TQ., as measured on our in-house dyno. This cat-back exhaust system is constructed of 2-1/2 IN - 2-1/4 IN mandrel-bent 304 stainless steel tubing for maximum strength and durability. This system features high-flow 304 stainless steel mufflers, producing a deep sound. This system produces a deep 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. State-of-the-art computer-aided design technology is utilized for precise vehicle fitment. 100% MIG-Welded for race-proven strength and durability.