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 stainless steel, producing an aggressive sound. Muffler finish may vary. Finishing off this exhaust system are dual 4 - 12 IN diameter black 304 stainless steel clamp - on exhaust tips. The tips feature an aFe POWER logo plate riveted on for a unique style. Gemini XV exhaust features an electronically controlled exhaust cutout valve to quickly switch between mild and aggressive tones at the push of a button. This kit includes two key fob remotes, control module, valve motor, and all necessary wiring. It's a simple installation, requiring no cutting of any wires or interference of the automobile's electronics. Utilizing factory style 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.