Gibson Exhaust 66503 Cat-Back Dual Split Exhaust System Stainless Steel 2.5in

The Gibson 66503 Cat-Back Dual Split Exhaust System delivers an aggressive throaty exhaust note and a dual-exit look through a straightforward bolt-on installation. Engineered to reduce backpressure and optimize exhaust flow, this system is designed to unlock measurable gains in torque and horsepower, with typical increases averaging 15–20 horsepower.

Built around Gibson's proven Superflow baffled and chambered muffler design, this system produces an aggressive exterior sound while keeping interior drone to a minimum. The split rear exit routes dual tips straight out the back, offering compatibility with most bumpers, roll pans, and trailer hitches. Note that exhaust volume increases under towing conditions.

Muffler Specifications:

• Design: Baffled and chambered, no internal packing
• Shape: 7 in. round body
• Inlet: 3 in. center inlet
• Outlet: 2.50 in. dual outlet
• Body Length: 24 in.

Tip Specifications:

• Material: Polished T304 stainless steel
• Style: Round slash-cut, clamp-on design
• Inlet: 2.50 in.
• Outlet: 3.50 in.
• Length: 12 in.

System Features:

• 2.5 in. mandrel-bent, heavy-gauge stainless steel tubing
• Zinc-plated hangers and clamps included
• Hassle-free bolt-on installation — no welding or cutting required
• Compatible with most bumpers, roll pans, and trailer hitches
• Backed by Gibson's Lifetime Limited Warranty

The Gibson 66503 is a complete cat-back exhaust system that installs using existing mounting locations, making it an ideal performance upgrade for truck enthusiasts seeking more power and a more commanding exhaust note without professional installation.