My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Gibson 5637 Cat-Back Dual Extreme Exhaust System Aluminized

(2010-2013 Chevrolet Silverado 1500; 2010-2013 GMC Sierra 1500)

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

Other options in this family: Gibson Exhaust 9704 Gibson Exhaust 5403 Gibson Exhaust 17306-B Gibson Exhaust 5587 Gibson Exhaust 65587

Manufacturer

Picture for manufacturer Gibson Exhaust

Part Number

5637
4 reviews
Sale Price

$799.91

Estimated ship date Tuesday, November 17

Check out with

ApplePay
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 Dual Extreme Cat-Back Exhaust System (PN 5637) delivers a bold dual-exit configuration that positions both outlets behind the rear tires at an aggressive angle, combining serious street presence with dyno-tuned performance gains. Engineered and tested to deliver an average of 15–20 horsepower, this aluminized system is built for truck enthusiasts who demand real, measurable results.

At the heart of the system is Gibson's baffled and chambered Superflow muffler design — free of internal packing — which promotes scavenging, reduces turbulence, and produces an aggressive exhaust tone with minimal interior drone. Power is optimized in the 2,000–4,000 RPM range where street vehicles actually operate.

Key Features:

  • Tubing: 2.25 in. aluminized heavy-duty mandrel-bent tubing for maximum flow and minimal restriction
  • Muffler: Baffled and chambered Superflow design; 4 x 9 x 18 in. oval body; 3.00 in. center inlet; 2.25 in. dual outlet
  • Tips: 3.50 in. polished T304 stainless steel round slash-cut tips; clamp-on design
  • Tip Specs: 2.25 in. inlet / 3.50 in. outlet / 12 in. length
  • Exit Position: Dual exit behind each rear tire
  • Installation: Bolt-on; includes all hardware and factory-style hangers — no welding required
  • Warranty: Lifetime Limited Warranty

The aluminized steel construction provides long-lasting durability and rust resistance, while the complete hardware kit ensures a straightforward, professional-quality installation. Backed by Gibson's Lifetime Limited Warranty, the 5637 is a proven performance upgrade for full-size trucks.

Products specifications

Fits

2010-2013 Chevrolet Silverado 1500; 2010-2013 GMC Sierra 1500

Tubing Diameter

2.25-in.Aluminized mandrel bent tubing.

Muffler Dimension

4 x 9 x 18 in. Oval Body; 3.00 in. Center Inlet; 2.25 in. Dual Outlet.

Muffler Description

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

Tip Specifications

Inlet 2.25in.; Outlet 3.50in.; L-12in.

Material

Aluminized

Prop 65

Yes

Tip Description

3.5in. Polished T304 Stainless. Round Slash-Cut Tip. Clamp on.

Exit Position

Exits Behind Each Rear Tire.

Outlet

Dual

Category

Truck and SUV

System Type

Cat Back

Tip Diameter

3.500 in.

Exit Position

Dual Split Rear Behind Rear Tires

Muffler Body Length

18.000 in.

Tip Logo

None

Tubing Diameter

2.250 in.

Exit Style

Straight

Inlet Inside Diameter

2.250 in.

Outlet Outside Diameter

2.250 in.

Tail Pipe Diameter

2.250 in.

Exhaust Type

Dual

Muffler Type

Chambered

I ordered a set of inner tie rods for my car from Autoplicity and found their prices to be the lowest online for the brand I was looking for. Items were ship out in 2 business days from the original manufacturer. Shipping prices were kind of on the expensive end considering the package size and weight so if Autoplicity adjust their shipping prices to be more competitive, I think their service and pricing would be hard to beat!

Lowest prices, free and fast shipping, excellent product.

site was the best online for determining fit for my lx wagon..

I'll start off saying that Autoplicity's prices are unbeatable...but, I placed my order on a Saturday night (which I know is the weekend)on a in stock part and it took them till the following Thursday to ship it out. I use my truck to make a living and was hoping to get it a little quicker, but now I'm down another 3-4 days till the part gets here. Also, I sent a e-mail on Tuesday evening regaurding my order and never got a response.

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