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Gibson 65679 Cat-Back Dual Sport Exhaust System Stainless Steel

(2015-2020 Cadillac Escalade; 2015-2020 GMC Yukon Denali)

Part of: Gibson Exhaust Dual Sport Cat-Back Exhaust System

Other options in this family: Gibson Exhaust 618816B Gibson Exhaust 9802 Gibson Exhaust 7100 Gibson Exhaust 69221 Gibson Exhaust 69127

Manufacturer

Picture for manufacturer Gibson Exhaust

Part Number

65679
11 reviews
Sale Price

$827.56

Estimated ship date Wednesday, November 18

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Product Details

The Gibson 65679 Dual Sport Cat-Back Exhaust System is engineered for truck and SUV owners who want a performance upgrade without compromising their towing setup. Exiting behind the rear tire, this dual cat-back system delivers a commanding look on the street or trail while keeping tips safely clear of any tow trailer.

Built from 409 stainless steel mandrel-bent tubing (3.5-in./2.25-in. diameter), this system maintains consistent exhaust flow through every bend for maximum performance. The baffled and chambered muffler design produces a deep, aggressive exhaust tone with minimal interior cabin drone. Dyno tested and dyno tuned, the 65679 delivers average gains of 18–20 horsepower and 15–20 lb-ft of torque.

Installation is completely hassle-free — all factory-style hangers and hardware are included for a clean, professional bolt-on fit with no welding required. Proudly made in the USA and backed by a Lifetime Limited Warranty.

Key Features:

  • Dual cat-back system exits behind the rear tire — tow-trailer friendly
  • 409 stainless steel mandrel-bent tubing — 3.5-in. primary / 2.25-in. secondary diameter
  • Baffled and chambered muffler: 4 x 9 x 18 in. oval body, 3.0-in. center inlet, 2.25-in. dual outlet
  • No internal packing — minimal interior drone with aggressive exterior sound
  • Dyno-proven gains: avg. 18–20 HP and 15–20 lb-ft torque
  • 4-in. polished T304 stainless rolled slash-cut clamp-on tips (inlet: 2.25-in., outlet: 4.0-in., length: 12-in.)
  • Includes all hardware and factory-style hangers for bolt-on installation
  • No welding required
  • Made in the USA
  • Lifetime Limited Warranty

Products specifications

Fits

2015-2020 Cadillac Escalade; 2015-2020 GMC Yukon Denali

Tubing Diameter

3.5-in./2.25-in. Stainless mandrel bent tubing.

Muffler Dimension

4 x 9 x 18 in Oval Body; 3..0. in. Center Inlet; 2.25 in. Dual Outlet.

Muffler Description

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

Material

Stainless

Prop 65

Yes

Tip Description

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

Exit Position

Exits Behind Rear Tire.

Tip Specifications

Inlet 2.25 in.; Outlet 4.0 in.; L-12 in.

Outlet

Dual

Category

Truck and SUV

Outlet Outside Diameter

3.500 in.

Material

304 Stainless Steel

Inlet Inside Diameter

3.500 in.

Tip Diameter

4.000 in.

Tip Logo

None

System Type

Cat Back

Tail Pipe Material

Stainless Steel

Muffler Body Length

18.000 in.

Muffler Type

Chambered

Tubing Diameter

3.500 in.

Tail Pipe Diameter

2.250 in.

Exit Style

Straight

Exhaust Type

Single

Exit Position

Rear

please send tracking info

Good image of the part and easy checkout.

I received my parts when I needed them by and they were quality parts.

Easy shipping

seems great and will get great review if dash shows up working

Excellent pricing and quick shipping.

Allways been easy to order, quick shipping also.

Great price, free shipping and offered Amazon payments!!

Great prices & fast shipping.

smooth and informative

This was my first time placing an order with Autoplicity and I would not hesitate to order from them again. The product was as described and shipping was very fast, received the item in 2 days. Good price too! Thanks Autoplicity.

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