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Gibson 65649 Cat-Back Dual Extreme Exhaust System Stainless Steel

(2011-2019 Chevrolet Silverado 2500 HD; 2011-2019 Chevrolet Silverado 3500 HD; 2011-2019 GMC Sierra 2500 HD; 2011-2019 GMC Sierra 3500 HD)

Part of: Gibson Performance Exhaust Dual Extreme Cat-Back Exhaust System

Other options in this family: Gibson Exhaust 9704 Gibson Exhaust 5403 Gibson Exhaust 5587 Gibson Exhaust 65587 Gibson Exhaust 65402

Manufacturer

Picture for manufacturer Gibson Exhaust

Part Number

65649
13 reviews
Sale Price

$952.13

Estimated ship date Monday, November 16

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Gibson 65649 Cat-Back Dual Extreme Exhaust System is engineered for performance-driven truck owners who demand aggressive sound, bold street presence, and real dyno-proven power gains. This complete bolt-on cat-back system exits behind the rear tires at an aggressive angle, delivering an unmistakable exhaust note without the need for any welding or cutting. Average horsepower gains of 15–20 HP are expected from this dyno-tuned and tested system. Backed by Gibson's Lifetime Limited Warranty.

Muffler Specifications:

  • Design: Baffled & Chambered — no internal packing for minimal interior drone and aggressive performance sound
  • Body: 8 in. Round
  • Inlet: 3.50 in. Center
  • Outlet: 3.00 in. Dual
  • Length: 24 in.

Exhaust Tip Specifications:

  • Style: 4 in. Round Slash-Cut, Clamp-On
  • Material: Polished T304 Stainless Steel
  • Inlet: 3 in.
  • Outlet: 4 in.
  • Length: 12 in.

Key Features:

  • Dual exit cat-back exhaust — exits behind rear tires at aggressive angle
  • Baffled and chambered muffler design with no internal packing
  • Minimal interior drone with aggressive exterior exhaust tone
  • Polished T304 stainless steel slash-cut tips included
  • Easy bolt-on installation — no welding required
  • Dyno-tuned and tested for real-world performance gains
  • Average gains of 15–20 horsepower
  • Covered by Gibson's Lifetime Limited Warranty

The Gibson Dual Extreme cat-back system combines aggressive street styling with measurable performance improvements, making it an ideal upgrade for truck and SUV enthusiasts seeking both power and sound enhancement.

Products specifications

Fits

2011-2019 Chevrolet Silverado 2500 HD; 2011-2019 Chevrolet Silverado 3500 HD; 2011-2019 GMC Sierra 2500 HD; 2011-2019 GMC Sierra 3500 HD

Tubing Diameter

3-in. Stainless mandrel bent tubing.

Muffler Dimension

8 in. Round Body; 3.50 in. Center Inlet; 3.00 in. Dual 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 Each Rear Tire.

Tip Description

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

Tip Specifications

Inlet 3 in.; Outlet 4 in.; L-12 in.

Outlet

Dual

Category

Truck and SUV

Inlet Inside Diameter

3.500 in.

Tail Pipe Diameter

4.000 in.

Exit Position

Dual Split Rear Behind Rear Tires

Tubing Diameter

3.000 in.

Tip Diameter

4.000 in.

Muffler Body Length

24.000 in.

Exhaust Type

Cat-Back

Material

Stainless Steel

Found you on ebay, best deal on the part I was looking for!

Quick and easy

great

So far so good

So Far, User Friendly and fast

Good Price

Autoplicity has been quick to send updates on my order to my email.

Best prices and i found exactly what i needed and the appropriate information. The fifth star is for the fact that a regular search for the part of auto-parts did not reveal this website. Found via Google - which totally fine, but 2 sources of marketing

easy

easy

So far so good.

no area to provide different billing address for card payment only shipping address, which most ppl no longer live at that address for card holders when originally received that card

Great seller! good communication between autoplicity and buyer!<br>Also very quick to process and send out product! Got order within 6 days standard shipping! Will purchase from again!!

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