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Gibson 615522 Cat-Back Single Exhaust System Stainless Steel with Slash-Cut Tip

(1999-2001 Chevrolet Silverado 1500; 1999-2000 Chevrolet Silverado 2500; 1999-2001 GMC Sierra 1500; 1999-2000 GMC Sierra 2500)

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

615522
6 reviews
Sale Price

$693.73

Estimated ship date Wednesday, November 18

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Product Details

The Gibson 615522 Cat-Back Single Exhaust System is a bolt-on performance exhaust upgrade built from T-304 polished stainless steel. Engineered and dyno-tested for real-world driving conditions, this system delivers maximum torque and horsepower gains in the 1,800–3,000 RPM range—exactly where you need it for everyday acceleration, towing, hill climbing, and passing. Average gains of 10–15 horsepower and 15–20 lb-ft of torque have been recorded on the dyno.

The system exits cleanly behind the rear tire and is specifically tuned to remain quieter inside the cabin than competing performance exhaust systems, while still delivering an aggressive exterior tone.

Muffler Specifications:

  • Design: Baffled & Chambered — no internal packing, nothing to blow out
  • Shape: 8 in. Round body
  • Inlet: 3.00 in. Offset
  • Outlet: 3.00 in. Offset
  • Muffler Length: 24 in.
  • Sound Character: Minimal interior drone with aggressive exterior tone

Exhaust Tip Specifications:

  • Material: Polished T-304 Stainless Steel
  • Style: Round Slash-Cut, Clamp-On
  • Inlet: 3 in.
  • Outlet: 3.5 in.
  • Tip Length: 12 in.

Installation & Hardware:

  • 100% bolt-on installation — no welding or cutting required
  • Includes all hardware and factory-style hangers for a clean, professional fit
  • Slip-fit component connections reduce turbulence and backpressure

Backed by Gibson's Lifetime Limited Warranty against defects in materials and workmanship, including rust-through on stainless steel systems. Manufactured in the USA.

Products specifications

Fits

1999-2001 Chevrolet Silverado 1500; 1999-2000 Chevrolet Silverado 2500; 1999-2001 GMC Sierra 1500; 1999-2000 GMC Sierra 2500

Tubing Diameter

3-in. Stainless mandrel bent tubing.

Muffler Dimension

8 in. Round; 3.00 in. Offset Inlet;3.00 in. Offset 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

System Type

Cat Back

Tubing Diameter

3.000 in.

Exit Position

Single Side

Inlet Inside Diameter

3.000 in.

Outlet Outside Diameter

3.000 in.

Exit Style

Straight

Material

Stainless Steel

Tip Diameter

3.500 in.

Exhaust Type

Cat-Back

Muffler Type

Chambered

Tail Pipe Diameter

3.000 in.

Muffler Body Length

24.000 in.

They had an item that was somewhat hard to find at a reasonable price. Glad I found them.

The best prices and fast shipping!

Great so far

great service, even better price! Would recommend Autoplicity to anyone.

I found Autoplicity on a well known online vendor and the experiance was excellent so now I just go straight to autoplicity.com directly my last order (17805) was for some parts for my very modifide Jeep and two things stood out, the price and shipping, both were top shelf and above my expectations. Now when I need parts I check autoplicity.com first. They are my #1 now.<br>

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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