Now your Silverado/Sierra can perform and sound as good as it looks with this aFe POWER Vulcan Series cat-back exhaust system. 3" to dual 3" mandrel-bent, 304 stainless steel tubing and high-flow muffler improves performance across the power band and delivers a deep, aggressive exhaust tone. 100% MIG-welded for strength and durability. Quad 4" black 304 stainless steel exhaust tips for an aggressive custom look. This system is constructed of durable mandrel-bent 3" 304 stainless steel tubing for maximum corrosion resistance. Mandrel-bent tubing for maximum air flow and low turbulence; increasing torque, horsepower and improved throttle response. A single-in, dual-out high-flow stainless steel muffler allows increased exhaust flow and reduces exhaust drone, maintaining a deep, tuned sound. Quad 4" black 304 stainless steel exhaust tips replace the factory tips for an aggressive, sport truck look. Factory-style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions for a secure fit. Quality hardware and clamps are included for a hassle-free installation.