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Gibson Exhaust 615556L Cat-Back Single Exhaust System Stainless Steel

(Chevrolet C3500 1988-89, K3500 1988-89, V30 1988, R30 1988, R20 1988, R2500 1989, V3500 1989; GMC C3500 1988-89, K3500 1988-89, V3500 1988-89 + 2 more models)

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

615556L
5 reviews
Sale Price

$693.73

Estimated ship date Wednesday, November 18

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Product Details

The Gibson 615556L is a cat-back single exhaust system built from 3-inch 409 stainless steel mandrel-bent tubing for unrestricted exhaust flow and long-lasting corrosion resistance. Engineered as one of Gibson's top-performing exhaust systems, it delivers real-world power gains focused in the 1,800–3,000 RPM range — exactly where you need it most for towing, hill climbing, passing, and everyday acceleration. The system exits behind the rear tire near the stock location for a clean, factory-style appearance with serious performance upgrades.

Gibson Superflow Muffler:

  • Baffled and chambered design with no internal packing
  • 8-inch round body with 3.00-inch center inlet and 3.00-inch center outlet
  • 24-inch body length
  • Minimal interior drone with an aggressive exterior exhaust note

Exhaust Tip:

  • 3.50-inch polished T304 stainless steel round slash-cut tip
  • Clamp-on fitment
  • 3-inch inlet / 3.5-inch outlet / 12-inch length

System Features:

  • 3-inch 409 stainless steel mandrel-bent tubing maintains consistent flow through every bend
  • Includes all hardware and factory-style hangers for bolt-on installation — no welding or cutting required
  • Dyno-tested for proven horsepower and torque gains
  • Backed by Gibson's Lifetime Limited Warranty
  • Made in the USA

The Gibson 615556L cat-back exhaust installs using factory-style hangers and all included hardware, delivering a professional finish without the need for cutting or welding.

Products specifications

Fits

Chevrolet C3500 1988-89, K3500 1988-89, V30 1988, R30 1988, R20 1988, R2500 1989, V3500 1989; GMC C3500 1988-89, K3500 1988-89, V3500 1988-89, R3500 1988-89, R2500 1988-89

Tubing Diameter

3-in. Stainless mandrel bent tubing.

Muffler Dimension

8 in. Round Body; 3.00 in. Center Inlet; 3.00 in. Center Outlet; L-24 in.

Muffler Description

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

Material

Stainless

Tip Specifications

Inlet 3in.; Outlet 3.5in.; L-12in.

Prop 65

Yes

Tip Description

3.5in. Polished T304 Stainless. Round Slash-Cut Tip. Clamp on.

Exit Position

Exits Behind Rear Tire.

Outlet

Single

Category

Truck and SUV

Muffler Type

Chambered

Outlet Outside Diameter

3.000 in.

Exhaust Type

Cat-Back

Exit Position

Single Side

Material

Stainless Steel

Tail Pipe Diameter

3.000 in.

Tubing Diameter

3.000 in.

Exit Style

Straight

Muffler Body Length

24.000 in.

Inlet Inside Diameter

3.000 in.

Tip Diameter

3.500 in.

System Type

Cat Back

nice site, great prices shipping should be free

Fast service

easy to order from and quick delivery

The best prices and fast shipping!

Easy website to shop on. Good phone support. Package will be arriving in a timely manner. All in all seems like a good company.

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