Gibson 65659 Super Truck Cat-Back Exhaust System Stainless Steel

The Gibson 65659 Super Truck Cat-Back Exhaust System delivers a deep, aggressive race tone with dual tailpipes that exit in front of the rear tires. Built from 409 stainless steel mandrel-bent tubing (3-in. primary / 2.0-in. secondary), this bolt-on system is engineered to reduce backpressure and unlock real, measurable performance gains — averaging 15–18 dyno-tested horsepower and 15–20 lb-ft of torque.

At the heart of the system is a Gibson Superflow muffler featuring a baffled and chambered design with no internal packing, which produces an aggressive exhaust note while keeping interior drone to a minimum. The system exits in front of the rear tires and is capped by a 6-in. polished T304 stainless rectangle tip (6 x 2.75-in. outlet) for a clean, factory-quality appearance.

Key Features:

• Cat-back system constructed from 409 stainless steel mandrel-bent tubing for optimal exhaust flow
• Gibson Superflow muffler — baffled and chambered design, no internal packing, minimal interior drone
• Muffler dimensions: 4 x 9 x 18-in. oval body with 3.0-in. center inlet and 2.0-in. dual outlet
• 6-in. polished T304 stainless rectangular tip (6 x 2.75-in. outlet, 2-in. inlet, 6-in. length)
• Dual tailpipes exit in front of the rear tires
• Hassle-free, bolt-on installation — no welding required
• Includes all hardware and factory-style hangers
• Backed by a Lifetime Limited Warranty
• UPC: 677418026733

Important Notes: Not recommended for towing applications. Noise level may exceed the 95-decibel standard. Warranty is voided by off-road or racing use, improper installation, or modification of the system.