Vulcan Series 3 IN 304 Stainless Steel Cat-Back Exhaust System w/Polished Tip.This system produced gains of up to +10 HP and +11 lbs. x Ft. TQ., as measured on our in-house dyno. This cat-back exhaust system is constructed of 3 IN mandrel-bent 304 stainless steel tubing for maximum strength and durability. This system features a high-flow 304 stainless steel muffler, producing a aggressive sound. Finishing off this exhaust system are dual 4-1/2 IN diameter polished 304 stainless steel clamp-on exhaust tips. The tips features an aFe POWER logo plate riveted on 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.