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Gibson 615549 Cat-Back Single Exhaust System Stainless Steel

(2001-2007 Chevrolet Silverado 2500 HD; 2001-2007 Chevrolet Silverado 3500; 2001-2007 GMC Sierra 2500 HD; 2001-2007 GMC Sierra 3500)

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

615549
5 reviews
Sale Price

$881.04

Estimated ship date Wednesday, November 18

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Product Details

The Gibson 615549 Cat-Back Single Exhaust System is Gibson's top-performing single side exhaust, engineered and dyno-tested to deliver serious gains in acceleration, towing capacity, hill climbing, and passing power. Exhaust exits cleanly behind the rear tire, keeping cabin noise lower than competing performance exhaust systems.

Performance Results:

  • Dyno-proven power gains of 10–15 horsepower and 15–20 lb-ft of torque
  • Maximum torque and horsepower delivered at low-end RPM range (1,800–3,000 RPM) — ideal for towing and hauling
  • Engineered to reduce backpressure for improved throttle response and fuel efficiency

Superflow™ Muffler Specifications:

  • Design: Baffled and chambered — no internal packing
  • Sound profile: Minimal interior drone with an aggressive exterior tone
  • Body shape: 8 in. round
  • Inlet: 3.00 in. dual inlet
  • Outlet: 4 in. center outlet
  • Muffler body length: 24 in.

Exhaust Tip Specifications:

  • Style: Round slash-cut, clamp-on
  • Material: Polished T-304 stainless steel
  • Tip inlet: 4 in.
  • Tip outlet: 5 in.
  • Tip length: 12 in.

System Construction & Installation:

  • Built with stainless steel mandrel-bent tubing for smooth exhaust flow
  • Includes all hardware and factory-style hangers for a true bolt-on installation
  • No welding or cutting required
  • Professional-quality fit and finish straight out of the box
  • Made in the USA

Backed by Gibson's Lifetime Limited Warranty, the 615549 is a proven upgrade for truck and SUV owners looking to maximize low-end performance without sacrificing cabin comfort.

Products specifications

Fits

2001-2007 Chevrolet Silverado 2500 HD; 2001-2007 Chevrolet Silverado 3500; 2001-2007 GMC Sierra 2500 HD; 2001-2007 GMC Sierra 3500

Tubing Diameter

4-in. Stainless mandrel bent tubing.

Muffler Dimension

8 in. Round; 3.00 in. Dual Inlet; 4 in. Center Outlet; L-24 in.

Muffler Description

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

Material

Stainless

Prop 65

Yes

Exit Position

Exits Behind Rear Tire.

Tip Description

5in. Polished T304 Stainless. Round Slash-Cut Tip. Clamp on.

Outlet

Single

Tip Specifications

Inlet 4 in.; Outlet 5 in.; L-12 in.

Category

Truck and SUV

Tip Diameter

5.000 in.

Material

Stainless Steel

Exit Position

Single Side

Tail Pipe Diameter

4.000 in.

Tubing Diameter

4.000 in.

Exhaust Type

Cat-Back

Outlet Outside Diameter

4.000 in.

Muffler Type

Chambered

Muffler Body Length

24.000 in.

Exit Style

Straight

Inlet Inside Diameter

4.000 in.

System Type

Cat Back

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

Great to order from shipping was fast and just awesome service will order from here again

The best prices and fast shipping!

Absolutely the best bargain you'll find! Don't pay retail mark up at the parts store, buy at Autoplicity and know you're saving money.<br>.

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

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