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SKU : KOO-11422400
Kooks 1-7/8" x 3" SS Headers. 2011-2014 Shelby GT500. - 11422400

This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.

Purchasing this product requires you to sign our Vehicle Compliance Waiver HERE



Lethal Performance is proud to announce the Kooks Custom Longtube Header System for the Shelby GT500. If you guys don't know Kooks has been bending and welding custom headers for over 30 years! The end result is one of the nicest works of art that you could ever imagine putting on your car.
The Kooks Custom Headers for the GT500 are Mandrel Bent out of T-304 Stainless Steel and welded with one thing in mind..."Precision"


The Shelby GT500 Headers are also made with 1-7/8" Primaries which all flow into a 3" Merge Collector and with your choice of X-Pipe.


Testing with these headers yielded 38rwhp and 40lbs of Tq with the Catted X-Pipe Version. Not only do these headers add performance but the sound of your Shelby will be turned into what it should be. A deep muscle car sound is what you can expect from these bad boys!!!


The Kooks header kit comes complete with all necessary hardware and 02 extensions!


If you have any questions regarding any of Kooks exhaust products please feel to call your Lethal Performance Sales Associate today.

Vehicle Application(s)

This product fits the following models and years

SVT Shelby GT5002011 2012
SVT Shelby GT500 5.8L2013

Customer Reviews 2 item(s)

The quality is unbelievable, the fitment was straight forward, however the oil dip stick will be a pain in the neck, and best thing to do is to have someone else with you while the car is jacked up.

And the sound is addicting especially while down shifting

I highly recommend it Review by Rakan / (Posted on 10/20/2015)
Great but they rub
The car sounds and performs amazing with these headers with the catted Kooks H Pipe that I bought as well. However, these headers rub on the steering shaft when turning right. Seems to be a really old issue on most of these Headers, including Kooks. Just a heads up. Review by Khrisjoel / (Posted on 11/20/2013)

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