Know the landed cost before you order
Prices include VAT. Shipping is charged separately and calculated at checkout for your destination. If no shipping option is shown, contact us for a quote before ordering.
Upgrade the headers on your supercharged Shelby
Build the front exhaust around your 5.4-litre GT500 with Kooks long tube headers and the primary size your setup needs. Both choices have 3" collectors, EGR fittings and installation hardware, ready for a matching Kooks crossover.
SKUs: 11322200, 11322400
Choose the primary size
11322200 uses 1-3/4" primaries; 11322400 uses 1-7/8". Both use 16-gauge 304 stainless tubing, oval ports, the stock bolt pattern and 3/8" laser-cut flanges.
Complete the front exhaust
Add the matching Kooks X-pipe or H-pipe for the required connection after the headers. The header fitting hardware is supplied, and professional installation helps manage engine-bay access and clearances.
Choose your configuration
| SKU | Configuration | Supplied arrangement | Fitting / engine conditions |
|---|---|---|---|
| 11322200 | Header Size: 1-3/4" | 1-3/4" primaries, 3" collectors; EGR fitting and installation hardware included. | Match the vehicle and engine rows below |
| 11322400 | Header Size: 1-7/8" | 1-7/8" primaries, 3" collectors; EGR fitting and installation hardware included. | Match the vehicle and engine rows below |
Tuning for your exhaust upgrade
We recommend tuning with every header installation so the calibration suits your new headers, complete exhaust and fuel. Talk to us to discuss the right tuning route for your vehicle.
Matching products
The 2007-2010 GT500 GREEN X-pipe provides the matching 3-inch front joint and 2-1/2-inch OEM rear outlet for these headers.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2007-2010 | Ford Mustang Shelby GT500 | 5.4L V8 | 11322200, 11322400 | |
| 2008-2009 | Ford Mustang Shelby GT500KR | 5.4L V8 | 11322200, 11322400 |
Intended use
11322200, 11322400: Competition, off-road and track use only. Not for use on public roads.
The competition-use waiver applies to 11322200, 11322400.
Ordering and delivery
Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.
Technical specifications
| Specification | Details |
|---|---|
| SKUs | 11322200, 11322400 |
| Application | 2007-2010 Shelby GT500 5.4L 4V |
| Material | 16-gauge 304 stainless steel |
| Primaries / collectors | 1-3/4" or 1-7/8" / 3" |
| Head interface | Oval ports; stock bolt pattern; 3/8" laser-cut flanges |
| Included | EGR fitting and installation hardware |
| Required connections | Matching Kooks X-pipe or H-pipe, separate |
Frequently asked questions
Does either option omit the EGR fitting?
Both exact SKUs include the EGR fitting.
Are the crossover pipes part of the purchase?
The headers are supplied separately from the required matching Kooks crossover.
