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Gibson Performance Exhaust 65663 Dual Sport Cat-Back Exhaust System Stainless Steel

(2014-2018 Chevrolet Silverado 1500; 2014-2018 GMC Sierra 1500)

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

65663
10 reviews
Sale Price

$827.56

Estimated ship date Wednesday, November 18

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Product Details

The Gibson Performance Exhaust 65663 Dual Sport Cat-Back Exhaust System delivers a bold combination of aggressive sound, improved performance, and a clean behind-the-rear-tire exit that keeps your exhaust clear of tow equipment. Constructed from 409 stainless steel mandrel-bent tubing, this single-in/dual-out system flows more efficiently than factory exhaust while maintaining a deep, authoritative exhaust note with minimal interior drone.

Dyno-tested for real-world results, the 65663 produces average gains of 18–20 horsepower and 15–20 lb-ft of torque. The baffled and chambered muffler design eliminates internal packing for long-lasting performance and an aggressive sound that stays comfortable inside the cab.

Key Features:

  • Cat-back design — no catalytic converter modification required
  • Single inlet / dual outlet configuration for the signature dual-tip look
  • 3-inch intermediate pipe diameter with 2.25-inch tailpipe diameter
  • Baffled and chambered 409 stainless steel muffler — 8-inch round body, 24-inch length
  • Two polished T304 stainless steel rolled slash-cut tips — 4-inch outlet, 2.25-inch inlet, 12-inch length
  • Exits behind the rear tire — tow-friendly positioning
  • All hardware and factory-style hangers included for a bolt-on installation — no welding required
  • Approximately 5–8 dB louder than stock with a deep, throaty tone
  • Backed by Gibson's Lifetime Limited Warranty

The complete kit includes all clamps, hangers, and polished stainless tips for a clean, professional installation straight out of the box. UPC: 677418026931.

Products specifications

Fits

2014-2018 Chevrolet Silverado 1500; 2014-2018 GMC Sierra 1500

Tubing Diameter

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

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

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

Material

Stainless Steel

Tail Pipe Diameter

2.250 in.

Tip Diameter

4.000 in.

Muffler Body Length

24.000 in.

Tubing Diameter

3.00 in. / 2.25 in.

Inlet Inside Diameter

3.000 in.

Exit Position

Behind Rear Tire

Exhaust Type

Cat-Back

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