Gibson Cat- Back Performance Exhaust 2021 - 2025 Suburban & Yukon XL 1500 5.3L - Single Black - 615639B

Unleash Power & Performance

Get the ultimate boost in acceleration, towing, hill climbing, and passing power with the Gibson Single Side Exhaust—our top-performing system.

The Black Elite Series product line truly displays Gibson’s commitment to dominating performance and style. Each T-304 stainless tip is offered with a premium black ceramic finish exclusive only to the Black Elite Series.

Proven Performance Gains

Designed for maximum low-end torque and horsepower (1800-3000 RPM).
Dyno-tested to deliver 10-15 horsepower and 15-20 lb-ft of torque—real-world performance you can feel.

Aggressive Sound, Minimal Drone

Gibson Superflow Muffler with a baffled & chambered design—no internal packing.
Produces an aggressive exhaust note while keeping cabin noise to a minimum.
Exits behind the rear tire for a sleek look and optimal performance.

Built to Last, Easy to Install

Mandrel-bent tubing ensures smooth, unrestricted airflow.
Includes all factory hangers and clamps for a seamless, bolt-on installation—no welding required.
Proudly Made in the USA and backed by a Lifetime Limited Warranty, ensuring lasting quality.

Upgrade today and experience the difference!

• Tubing Diameter: 3.00-in. 409 Stainless mandrel bent tubing.


• Tip Description: 4in. Black Ceramic T304 Stainless. Rolled Slash-Cut Tip. Clamp on.
  


• Header Features:


• Tip Specification: Inlet 3 in.; Outlet 4 in.; L-12 in.
  


• Muffler Description: Baffled & Chambered Design, No internal Packing, Minimal Interior Drone, Aggressive Sound


• Muffler Features and Benefits:


• Muffler Dimension: 8 in. Round Body; 3 in. Center Inlet;3 in. Center Outlet; ; L-24 in.
  


• Additional Description: Includes all hardware and factory style hangers for easy bolt on installation.


• Exit Position: Exits Behind Rear Tire.


• Footnote:


• Warranty: Lifetime Limited Warranty