Gibson 65687 Cat-Back Dual Extreme Exhaust System Stainless Steel

The Gibson 65687 Cat-Back Dual Extreme Exhaust System is a bolt-on performance upgrade engineered for truck and SUV owners who demand aggressive sound, bold looks, and real horsepower gains. The dual-exit design exits behind the rear tires at an aggressive angle, delivering a commanding presence and a deep, powerful exhaust tone that sets this system apart from the factory setup.

Dyno-tuned and road-tested, this cat-back system is designed to deliver average gains of 15–20 horsepower while improving throttle response and overall drivability. The system uses 2.25-inch 409 stainless steel mandrel-bent tubing for maximum exhaust flow and long-term corrosion resistance.

Key Features:

• Dual Extreme cat-back design — exits behind rear tires at an aggressive angle
• 2.25-in. 409 stainless steel mandrel-bent tubing for optimal flow and durability
• Superflow CFT (Continuous Flow Technology) muffler — baffled and chambered design with no internal packing for minimal interior drone and an aggressive exterior sound
• Muffler dimensions: 8-in. round body, 3-in. offset inlet, 2.25-in. dual outlet, 24-in. length
• 4.0-in. polished T304 stainless rolled slash-cut tip — clamp-on style (2.25-in. inlet, 4.0-in. outlet, 12-in. length)
• Dyno-tested for an average of 15–20 horsepower gains
• No cutting or welding required — complete bolt-on installation
• Street-legal in all 50 states and will not void the factory warranty
• Backed by Gibson's Lifetime Limited Warranty for the original purchaser

The Gibson 65687 is a complete bolt-on cat-back exhaust kit that installs without cutting or welding, making it accessible for DIY installers. Whether you're looking to improve performance at the track or simply want a more aggressive sound and look on the street, the Dual Extreme delivers on all fronts. Made in the USA.