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Gibson Exhaust 615637 Cat-Back Single Exhaust System Stainless Steel Swept Side

(2015-2020 Chevrolet Suburban; 2015-2020 GMC Yukon XL)

Part of: Gibson Performance Single Side Cat-Back Exhaust System

Other options in this family: Gibson Exhaust 619995 Gibson Exhaust 319675 Gibson Exhaust 315536 Gibson Exhaust 618815B Gibson Exhaust 315599

Manufacturer

Picture for manufacturer Gibson Exhaust

Part Number

615637
11 reviews
Sale Price

$699.33

Estimated ship date Wednesday, November 18

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Gibson Performance 615637 is a cat-back single exhaust system built from heavy-duty 409 stainless steel tubing, engineered and dyno-tested to unlock more power and a deep, aggressive exhaust tone. Featuring mandrel-bent tubing that maintains consistent diameter through every curve, this system maximizes exhaust flow while minimizing backpressure for real-world performance gains.

Dyno results demonstrate peak torque and horsepower output in the critical low-end power band of 1,800 to 3,000 RPM, with average gains of 18–21 horsepower and 20–22 lb-ft of torque — making it an ideal upgrade for towing, acceleration, hill climbing, and passing performance. The swept-side exit routes exhaust behind the rear tire on the passenger side.

Muffler Specifications:

  • Gibson Superflow baffled and chambered muffler design
  • No internal packing for long-term durability
  • Oval body: 8 in. x 11 in. x 24 in.
  • 3.0 in. offset inlet / 3.0 in. offset outlet
  • Minimal interior drone with aggressive exterior tone

Tip Specifications:

  • 4 in. polished T304 stainless steel rolled slash-cut tip
  • Clamp-on design — no welding required
  • Tip inlet: 3.0 in. / Tip outlet: 4.0 in. / Length: 12 in.

System Features:

  • 409 stainless steel mandrel-bent tubing — 2.25 in. diameter
  • Zinc-plated hangers and clamps included
  • Factory-style bolt-on installation — no drilling or welding required
  • Exits at stock location behind rear tire, passenger side
  • Proudly made in the USA
  • Backed by Gibson's Lifetime Limited Warranty

Products specifications

Fits

2015-2020 Chevrolet Suburban; 2015-2020 GMC Yukon XL

Tubing Diameter

2.25-in.Stainless mandrel bent tubing.

Muffler Dimension

8 x 11 x 24 in. Oval Body; 3.0 in. Offset Inlet; 3.0 in. Offset Outlet.

Muffler Description

Baffled and Chambered Muffler Design, No internal Packing, Minimal Interior Drone, Aggressive Sound

Tip Specifications

Inlet 3.0 in.; Outlet 4.0 in.; L-12 in.

Material

Stainless

Prop 65

Yes

Tip Description

4in. Polished T304 Stainless Rolled Slash-Cut Tip. Clamp on.

Exit Position

Exits In Stock Location.

Outlet

Single

Category

Truck and SUV

Tubing Diameter

2.250 in.

Exit Position

Stock

Material

Stainless Steel

Exit Style

Straight

Tip Diameter

4.000 in.

Inlet Inside Diameter

3.000 in.

Tail Pipe Diameter

2.250 in.

Muffler Type

Chambered

Outlet Outside Diameter

3.000 in.

System Type

Cat Back

Muffler Body Length

24.000 in.

Exhaust Type

Single

Connection with Amazon is great

easy

Great price and good company to buy from!

easy shopping, I have my truck in the shop and waiting for the part

loved it!!!!!!

easy, like the coices for checking out with amazon and paypal.

Quick

Ordering is quick and easy and product was just as described

Great place to order

This is the first time that I have ordered from Autoplicity and I will always search their site first when looking for aftermarket parts for my car. I bought an air oil separator that is normally 300 for 220! I ordered on monday and received it on thursday. I was shocked to receive it so fast. Great company and I will definitely buy from them again.

Awesome selection, most reasonable prices around!!!

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