Gibson 615628 Stainless Cat-Back Single Side Exhaust System

The Gibson 615628 is a cat-back, single swept-side exhaust system crafted from T-304 polished stainless steel, engineered to deliver real, measurable performance gains for trucks and SUVs. Dyno-tested to optimize low-end power output between 1,800 and 3,000 RPM, this system delivers the torque and horsepower where drivers need it most — acceleration, hill climbing, towing, and passing.

Key Features:

• Dyno-proven low-end gains — maximizes torque and horsepower in the 1,800–3,000 RPM power band
• Gibson Superflow Muffler — baffled and chambered design with no internal packing for minimal interior drone and an aggressive exhaust tone
• T-304 polished stainless steel construction — mandrel-bent tubing maintains constant exhaust flow through every bend for outstanding performance and long-term durability
• 3.5-inch stainless tubing with a polished slash-cut tip; 8 x 11 x 24-inch oval muffler body with offset inlet and offset outlet
• Swept-side exit behind the rear tire — quieter cabin experience compared to other performance exhaust systems
• Includes all factory-style hangers and clamps — hassle-free bolt-on installation, no drilling or welding required
• Street legal in all 50 states — compliant with emissions standards and does not void factory vehicle warranty
• Proudly made in the USA and backed by Gibson's Lifetime Limited Warranty

The Gibson 615628 cat-back exhaust system is a complete bolt-on kit that installs using existing factory mounting points, delivering a professional finish without professional labor costs. Whether used for daily driving, towing, or spirited performance, this system provides a deep, aggressive exhaust note while keeping interior sound levels in check.