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 5664 Cat-Back Dual Split Exhaust System with Polished Stainless Tips

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

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

Other options in this family: Gibson Exhaust 700001 Gibson Exhaust 312700 Gibson Exhaust 17303-B Gibson Exhaust 9508 Gibson Exhaust 66568

Manufacturer

Picture for manufacturer Gibson Exhaust

Part Number

5664
12 reviews
Sale Price

$826.29

Estimated ship date Sunday, November 15

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 Performance Exhaust 5664 is a cat-back dual split exhaust system engineered to deliver a deep, aggressive exhaust tone and measurable performance gains. By reducing backpressure and improving exhaust flow, this system produces dyno-proven increases in horsepower and torque where you need it most — in the low-to-mid RPM power band.

Key Features:

  • Mandrel-bent tubing: 3.5-in./2.25-in. heavy-gauge mandrel-bent tubing ensures consistent exhaust flow and long-lasting durability
  • Gibson SuperFlow Muffler: Baffled and chambered design with no internal packing delivers a powerful, deep exhaust tone with minimal interior drone
  • 4-in. Polished T304 Stainless Rolled Slash-Cut Tips: Clamp-on design with a 2.25-in. inlet and 4.0-in. outlet for a bold, finished appearance
  • Dual split exit: Exits straight out the back — compatible with most bumpers, roll pans, and trailer hitches
  • Bolt-on installation: Includes all hardware and factory-style hangers for a direct-fit install with no cutting or welding required
  • Sold as a complete kit with all necessary mounting hardware
  • Made in the USA and backed by Gibson's Lifetime Limited Warranty

This dual split cat-back system is ideal for truck and SUV owners who want standout dual-exhaust styling without sacrificing trailer hitch or roll pan compatibility. Note that exhaust sound increases under towing conditions.

Products specifications

Fits

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

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

Aluminized

Exit Position

Exit Is Straight Out The Back.

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.

Tip Specifications

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

Outlet

Dual

Category

Truck and SUV

Tip Diameter

4.000 in.

Tail Pipe Diameter

2.250 in.

Muffler Body Length

24.000 in.

System Type

Cat Back

Exit Position

Dual Split Rear

Muffler Type

Chambered

Exit Style

Straight

Outlet Outside Diameter

4.000 in.

Inlet Inside Diameter

3/2.25

Exhaust Type

Dual

Tubing Diameter

3.000 in.

Tip Logo

None

very east to use and navigate and prices were fair

Great so far

Quick order

Quick and easy!

Quick service

great easy an quick

QUICK N PROMP WEB PAGE N EASY TO NAVIGATE THROUGH, WOULD HIGHLY RECOMMEND...

So far so good. Quick, easy. Live the amazon option

I found what I wanted and it was overall a pleasant experience.

Product came fast and shipped well. Price was far better than I could find elsewhere. What else could you ask for?

it was a very pleasant shopping experience, i will definitely be shopping here again.

Easy to deal with about shipping questions, great prices, and friendly customer service. One of the few places who says "I'll return you call" and actually does. Thanks...

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