aFe Power Gas Cat-Back Exhaust System for GMC Sierra 1500 2009 - 2013

Performance Gains: This system produced gains of up to +14 HP and +17 lbs. x Ft. TQ. , as measured on our in-house dyno.3" 409 Stainless Steel Construction: This cat-back exhaust system is constructed of 3" 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 aggressive sound.4-1/2" Diameter Black Exhaust Tip: Finishing off this exhaust system is a 4-1/2" diameter black 304 stainless steel clamp-on exhaust tip. The tip features an aFe POWER logo plate riveted on for a unique style.Aggressive Sound: This system produces an aggressive sound unleashing all available horsepower and torque.Installation: Utilizing factory style hangers this system is a direct bolt-on system, which requires no cutting or modifications for a hassle-free installation.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.Emissions Disclaimer: This product does not require a CARB EO#.aFe POWER exhaust systems are engineered and manufactured in our Corona, California facility.