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Gibson Exhaust 5666 Dual Sport Cat-Back Exhaust System - Aluminized Steel, Single In / Dual Out

(2014-2018 Chevrolet Silverado 1500 High Country/LTZ; 2014-2018 GMC Sierra 1500 Denali/SLT)

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

5666
14 reviews
Sale Price

$827.56

Estimated ship date Wednesday, November 18

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Product Details

The Gibson Performance 5666 Dual Sport Cat-Back Exhaust System is engineered for truck and SUV owners who want a bold dual-exit look without compromising towing clearance. Exits are routed behind the passenger-side rear tire, keeping the path clear for tow trailers while setting your rig apart from the crowd on the street or the trail.

Built from heavy-duty aluminized steel mandrel-bent tubing (3.5-in. main / 2.25-in. outlet), the system maintains consistent exhaust flow throughout with minimal backpressure. The Superflow muffler uses a baffled and chambered design—without internal packing—to deliver an aggressive, authoritative exhaust note while keeping interior drone to a minimum.

Key Features:

  • Cat-back design — single inlet, dual outlet; exits behind passenger-side rear tire
  • 3.5-in. / 2.25-in. aluminized mandrel-bent tubing for maximum exhaust flow
  • Superflow muffler: baffled & chambered design, no internal packing, minimal cabin drone
  • Muffler body: 8-in. round, 24-in. length; 3-in. offset inlet / 2.25-in. dual outlet
  • 4-in. polished T304 stainless steel rolled slash-cut tips (2.25-in. inlet / 4.0-in. outlet / 12-in. length)
  • Dyno-tested for gains of 10–20 HP and 15–20 lb-ft of torque at peak low-end RPM range
  • Bolt-on, clamp-on installation — no welding required; all hardware and factory-style hangers included
  • Proudly made in the USA
  • Backed by a Lifetime Limited Warranty

The 5666 is sold as a complete kit including all clamps, hangers, and stainless steel tips. Its straightforward bolt-on design means professional-quality results without the need for cutting or welding.

Products specifications

Fits

2014-2018 Chevrolet Silverado 1500 High Country/LTZ; 2014-2018 GMC Sierra 1500 Denali/SLT

Muffler Dimension

8 in. Round Body; 3 in. Offset Intlet;2.25 in. Dual Outlet; ; L-24 in.

Muffler Description

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

Material

Aluminized

Tubing Diameter

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

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

Tip Logo

None

Exhaust Type

Dual

Exit Position

Rear

Tubing Diameter

3.500 in.

Tail Pipe Diameter

2.250 in.

Muffler Body Length

24.000 in.

Inlet Inside Diameter

3.000 in.

System Type

Cat Back

Outlet Outside Diameter

2.250 in.

Muffler Type

Chambered

Tip Diameter

4.000 in.

Exit Style

Straight

Lowest price that i could find,fast shipping!!!!!<br>

FAST SHIPPING.. EASY TO DEAL WITH... OVERALL GREAT COMPANY

Great products and price

Amazon Payment was easy.

online was great

So far so good. Fast, easy and no gimmicks.

great prices.

Good

Great price, fast shipping! Looking forward to receiving the part.

Not bad if you know what your looking for

Went smoothly

Great experience hopefully fast shiping

Great prices. Was a little hard to find bulbs for low beams, because it was not really descriptive.

Great fast delivery awesome prices and good quality, Would shop with them again!

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