Kooks Shelby GT500 3" High Flow Off Road X Pipe bolts to aftermarket cat-backs that use 3" diameter tubing at the factory connection point. The Kooks Off Road X Pipe will give your exhaust that VERY aggressive tone, as aggressive as it can be and help your car produce the most power possible without any exhaust restrictions.Learn More

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.

Learn More

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 1-3/4" 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.

Learn More

3" x 2-1/2" Non-Catted Stainless X-Pipe. 2007-2010 Ford Shelby GT500 5.4L 4V. Must be used with Kooks Headers. 2-1/2" OUTLET CONNECTS TO OEM EXHAUST.Learn More

3" x 2-1/2" Non-Catted Stainless H-Pipe. 2007-2010 Ford Shelby GT500 5.4L 4V. Must be used with Kooks Headers. 2-1/2" OUTLET CONNECTS TO OEM EXHAUST.Learn More

3" x 2-1/2" GREEN Catted Stainless X-Pipe. 2007-2010 Ford Shelby GT500 5.4L 4V. Must be used with Kooks Headers. 2-1/2" OUTLET CONNECTS TO OEM EXHAUST.Learn More

3" x 3" Non-Catted Stainless H-Pipe. 2007-2014 Ford Shelby GT500 5.4L/5.4L 4V. Must be used with Kooks Headers. 3" OUTLET DOES NOT CONNECT TO OEM EXHAUST.Learn More

Kooks 3" Stainless Steel GREEN Catted H-Pipe for 2007-2010 Ford Mustang Shelby GT500

Kooks headers and exhaust system are designed specifically for each application. Kooks utilizes the firing order of the engine when designing their exhaust tubes. Every system is dyno and race tested to ensure the results are up to Kooks' expectations. This means Kooks can guarantee their exhaust makes the most horsepower and torque in the industry. Kooks only uses the highest quality stainless steel for premium longevity and durability. All Kooks products are manufactured in a 45,000 square foot state of the art facility located in Statesville, North Carolina. Kooks is involved with all types of automobile racing, from oval track to drag racing and they're even an official contingency partner with NASCAR. With over 50 years of header and exhaust knowledge, you're guaranteed the best quality products.

Description
• Must be used with Kooks Long Tube Header
• Includes Kooks 49 state EPA approved Ultra High Performance GREEN Cats
• No tuning required and no check engine light
• 2-1/2" Outlet for use with OEM exhaust
• 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
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