My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

Gibson Exhaust 65661 Dual Split Cat-Back Exhaust System Stainless Steel

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

Manufacturer

Part Number

65661
Sale Price

$826.29

Estimated ship date Wednesday, November 18

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Gibson Performance Exhaust 65661 Dual Split Cat-Back Exhaust System delivers an aggressive, throaty exhaust note alongside real, dyno-verified performance gains. Engineered to reduce backpressure throughout the entire exhaust path, this cat-back system helps unlock average horsepower gains of 18–20 hp with meaningful increases in low-end torque—power you can feel on the street and on the job.

Key Features:

  • Dual Split Exit Design — Dual stainless steel tips exit straight out the rear for a bold, clean appearance compatible with most bumpers, roll pans, and trailer hitches
  • Mandrel-Bent Tubing — 3-in./2.25-in. tubing diameter engineered for maximum exhaust flow and minimal restriction
  • Polished T304 Stainless Tips — 4-in. rolled slash-cut clamp-on tips (2.25-in. inlet / 4.0-in. outlet / 12-in. length) resist corrosion and maintain lasting shine
  • Baffled & Chambered Muffler Design — No internal packing for an aggressive exhaust tone with minimal interior drone; 8-in. round body, 3-in. offset inlet, 2.25-in. dual outlet, 24-in. length
  • Louder Under Tow — Sound level increases appropriately under towing load for that performance feel when you need it most
  • Hassle-Free Bolt-On Installation — Includes all hardware and factory-style hangers; no cutting or welding required
  • Lifetime Limited Warranty — Backed by Gibson's commitment to quality for the life of the original vehicle ownership
  • Made in the USA

The Gibson 65661 is a complete cat-back exhaust kit that installs without modification to your factory exhaust mounting points. Everything needed for installation is included in the box, making it an ideal upgrade for truck and SUV owners seeking improved performance and a more commanding exhaust sound.

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

Exit Position

Exit Is Straight Out The Back.

Material

Stainless

Prop 65

Yes

Tip Description

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

Tip Specifications

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

Outlet

Dual

Category

Truck and SUV

Material

Stainless Steel

Tip Diameter

4.000 in.

Exit Position

Straight Out Back

Exhaust Type

Cat-Back

Muffler Body Length

24.000 in.

Tubing Diameter

3.00 in. / 2.25 in.

Inlet Inside Diameter

3.000 in.

Tail Pipe Diameter

4.000 in.

They had the lowest price by far! Quick shipment! I am going back for more. Thanks!<br><br>Order 6489

Good

Great prices and simple Amazon account checkout.

quick &amp; ez so far

fast shipping, product received was product described.

Quick easy order

Fast shipping, good communication, and cheap prices means I'm going to buy more in the future.

good quick simple...

Easy to use and find.

Great price on product sold out at my "regular" place. My only negative was that I didn't get info to track the package or know when it would be delivered -- until AFTER it had been delivered. But that's not such a bad thing; it was a nice surprise when it showed up! I'll be recommending you to friends.

Great seller. Competitive price, extremely fast shipping. Would most likely buy again!

For a first time buyer the experience was great and easy to do. I see now after I ordered mt part that you want me to agree to you sending me another e-mail to make sure I'm satisfied with my order. One of the other benefits I am told it I will receive a

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy