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

Kooks Headers 11423300 3in x 2-3/4in Stainless Steel Catted X-Pipe 2011-2014 Shelby GT500

(2011-2014 Ford Mustang)

Part of: Kooks Headers GREEN Catted X-Pipe EPA-Certified High-Performance Exhaust Crossover

Other options in this family: Kooks Headers 21703300 Kooks Headers 25103301 Kooks Headers 25203301 Kooks Headers 21613301 Kooks Headers 23113300

Manufacturer

Picture for manufacturer Kooks Headers

Part Number

11423300
11 reviews
Sale Price

$2,219.60

Estimated ship date Thursday, November 26

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 Kooks Headers 11423300 is a high-performance catalyzed X-pipe designed specifically for 2011-2014 Ford Shelby GT500 models. This premium exhaust component features a 3-inch inlet transitioning to 2-3/4-inch OEM-size outlets, constructed from durable stainless steel for long-lasting corrosion resistance and performance.

Key Features:

  • 304 stainless steel construction for maximum durability and heat resistance
  • Catalyzed design with high-flow 200-cell metallic catalytic converters for emissions compliance
  • True X-pipe configuration for optimized exhaust scavenging and increased horsepower
  • 3-inch inlet diameter to 2-3/4-inch outlet diameter sizing
  • Direct bolt-on fitment for 2011-2014 Shelby GT500 applications
  • GREEN Catted designation indicates 50-state emissions legal status
  • Precision TIG-welded construction for leak-free performance
  • Maintains OEM-style outlet sizing for compatibility with stock exhaust systems

This X-pipe is an essential upgrade for GT500 owners looking to maximize exhaust flow while maintaining emissions compliance. The X-pipe design balances exhaust pulses between cylinder banks, reducing backpressure and improving throttle response. Handcrafted in the USA by Kooks Headers, a trusted name in high-performance exhaust systems since 1962.

Products specifications

Fits

2011-2014 Ford Mustang

Prop 65

WARNING: This product can expose you to chemicals including Chromium and Nickel; which are known to the State of California to cause cancer; birth defects or reproductive harm. For more information go to www.p65warnings.ca.gov

products i ordered were at low prices, good quality. i would recommend<br>

So far easy set up and navigation of bill pay site. Search worked well

ok so for

So far G2G.

Well organized website, good aftermatket and OEM selections. One of the first search results is a good hit.

Thank you

Shipped and received in quick fashion. Item arrived as expected. Would definitely buy from again!

Quick easy ordering Best price of all internet and local search

So far, a great shopping experience.

Easy and cheap ! =-)

The lowest price on the internet for this part and they shipped it fast!!!! This was definitely a very good experience!<br>I will gladly buy parts from this company again!

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