TRE PERFORMANCE
About TREperformanceContact UsNewsPoliciesProject Cars
SHOP ONLINE
Air InductionBrakesClutch/FlywheelElectronicsEnginesExhaustFeatured ItemsFront End Accessory Drive SystemsFuel SystemInteriorOil SystemRear EndRotating AssemblySuperchargersTop End Engine kitsTuning ServicesTurbochargersValve CoversValvetrainGarage SaleCustomer RidesTRE Project Rides

Contact Us

1725 Monrovia Ave. STE D7 Costa Mesa, CA 92627
877-514-9494

Safe & Secure Shopping

Copyright © 2026 TRE Performance. All Rights Reserved. Powered by  Web Shop Manager.

tre-performance
About TREperformanceContact UsNewsPoliciesProject Cars
NEWSTRE PROJECT RIDESCUSTOMER RIDES
ContactPoliciesAbout UsFAQs

MY CART

YOUR CART IS EMPTY

Browse parts and accessories to get started.

tre-performance
The Racers Edge PerformanceSALES@TREPERFORMANCE.COM
760-586-5617
Cylinder Heads
Air Induction
Engines
Fuel System
Interior
Superchargers
Top End Engine kits
Cylinder Heads
Air Induction
Engines
Fuel System
Interior
Superchargers
Top End Engine kits
HOME / PRODUCT / Ford Mustang Shelby GT500 2011-2014 Kooks Long Tube Headers & Green Catted X-Pipe Connection Kit 1-3/4" x 3"
SaleFord Mustang Shelby GT500 2011-2014 Kooks Long Tube Headers & Green Catted X-Pipe Connection Kit 1-3/4" x 3"

Ford Mustang Shelby GT500 2011-2014 Kooks Long Tube Headers & Green Catted X-Pipe Connection Kit 1-3/4" x 3"

SKU: 1142H430
$3,771.53$4,190.59
Loading options…

Description

Kooks Headers offers 1-3/4" x 3" headers for the Ford Mustang Shelby GT500 2011-2014 Kooks Headers are built by hand right here in the USA Starting with premium 18-gauge steel or T304 stainless, their master craftsmen custom sculpt your headers for a perfect fit. They're equipped with 3/8" flanges that won't warp, hand-ground ports that tame turbulence and a scavenging spike to boost flow. The coating on the Kooks Green Cat has more of the precious metals required to create the proper reaction to function as a catalytic converter in newer vehicle exhaust systems.

The coating on the Kooks Green Cat has more of the precious metals required to create the proper reaction to function as a catalytic converter in newer vehicle exhaust systems. This coating also helps the car withstand the increased heat in higher horsepower and forced induction applications.

While Kooks Performance Headers may not be street legal in California, Kooks Products are Backed by a Limited Lifetime Warranty To the Original Purchaser. Kooks Products Are Dyno And Race Tested and Designed For Maximum Power.

Legend has it that there's a mystical chili that grows deep in the belly of the Amazon, and that anyone who dares take a bite goes completely insane. We can't say if the story is true, but we do know for sure that you'll go nuts for the gut-wrenching power of Kooks Street Headers. Whether you're hopping up your Sunday driver or souping up your track star, Kooks Headers unleash an insane amount of performance. In fact, no other header company can top Kooks when it comes to cranking out the ponies. Of course with more than fifty years of experience under the hood, it's no wonder why they're still leading the pack.


Description:
1-3/4" x 3" Stainless Steel Long Tube Headers
3" x 2-3/4" (OEM) GREEN Catted X-Pipe
O2 extensions, Cometic header gaskets, Stage 8 locking bolts, and all installation hardware included
These products are NOT legal for sale, installation, or use on a licensed vehicle in the state of California, and they do NOT meet CARB compliance


Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best Headers and complete exhaust systems for your street, race and off-road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don't forget, "Get Kookin with KOOKS!"

Tell a Friend

Your Name:
Product:Ford Mustang Shelby GT500 2011-2014 Kooks Long Tube Headers & Green Catted X-Pipe Connection Kit 1-3/4" x 3"

200 characters remaining