Gibson 9021 Cat-Back Dual Extreme Exhaust System Aluminized

The Gibson Performance 9021 Cat-Back Dual Extreme Exhaust System is a bolt-on performance upgrade engineered to deliver aggressive sound, bold street presence, and measurable power gains. Built with mandrel-bent aluminized tubing, this dual cat-back system routes exhaust exits behind the rear tires at an aggressive angle, giving your truck a clean, purposeful look without sacrificing ground clearance or towing clearance.

At the heart of this system is Gibson's Superflow™ CTF baffled and chambered muffler—designed with no internal packing for long-term durability, minimal interior drone, and a deep, aggressive exhaust note that performs without becoming fatiguing on the highway.

Key Features:

• Dyno-tuned performance: Average gains of 15–20 horsepower with improved torque across the RPM range
• Mandrel-bent aluminized tubing: 3" primary / 2-1/2" secondary — smooth bends reduce backpressure and resist cracking or kinking
• Superflow™ CTF Muffler: Baffled and chambered design; no internal packing; minimal interior drone; aggressive exhaust note
• Muffler dimensions: 7" round body; 3.00" center inlet; 2.50" dual outlet; 19" length
• Tip style: 4" polished T304 stainless steel rolled slash-cut tips — clamp-on installation
• Tip dimensions: 2.50" inlet; 4.0" outlet; 12" length
• Dual rear exit: Tips exit behind the rear tires at an aggressive outward angle
• Bolt-on installation: No cutting or welding required; uses factory-style hangers and included hardware
• Finish: Aluminized heavy-duty steel tubing with corrosion resistance
• Warranty: Backed by Gibson's Lifetime Limited Warranty

The Gibson 9021 is a complete cat-back exhaust system that installs with basic hand tools and no fabrication. The combination of free-flowing mandrel-bent tubing and the Superflow muffler reduces exhaust restriction, helping unlock additional horsepower and torque while improving exhaust flow efficiency. Whether you're looking for a stronger performance tone or measurable power gains, the Dual Extreme system delivers on both fronts.