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.
Build an exhaust upgrade around your supercharged GT500
Give your Predator-powered GT500 a matched Kooks long tube header and front connection upgrade. All three packages use 2" headers, with Competition Only, GREEN or H.O. GREEN connections. The kits include OEM adapters, allowing the factory-style rear exhaust to remain part of the setup.
SKUs: 1156H610, 1156H630, 1156H640
Choose the catalyst specification
GREEN and H.O. GREEN give you two catted choices for this supercharged engine. The H.O. GREEN package uses 4-1/2" catalyst bodies and a 300 CPSI substrate. Competition Only supplies uncatted front connections for competition use.
The adapters and fitting parts are part of the kit
The 2" headers use 3" collectors. O2 extensions, gaskets and installation hardware are included; the H.O. GREEN package expressly specifies 3" to 2-3/4" OEM adapters. That gives you a clearer complete purchase than buying headers without their front connections.
Choose your configuration
| SKU | Configuration | Supplied arrangement | Fitting / engine conditions |
|---|---|---|---|
| 1156H610 | Cat Type: Comp. Only | Headers; Competition Only front connections; OEM adapters, O2 extensions, gaskets and installation hardware included | Uncatted; competition use |
| 1156H630 | Cat Type: GREEN Cats | Headers; GREEN Cats front connections; OEM adapters, O2 extensions, gaskets and installation hardware included | Use the SKU-specific vehicle rows below |
| 1156H640 | Cat Type: H.O. GREEN Cats | Headers; H.O. GREEN cats front connections; OEM adapters, O2 extensions, gaskets and installation hardware included | Use the SKU-specific vehicle 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. Contact us to discuss the right tuning route for your vehicle.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2020-2022 | Ford Mustang Shelby GT500 | 5.2L V8 | 1156H610, 1156H630, 1156H640 |
Intended use
1156H610: Competition, off-road and track use only. Not for use on public roads.
The competition-use waiver applies to 1156H610.
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 | 1156H610, 1156H630, 1156H640 |
| Application | 2020-2022 Shelby GT500 5.2L supercharged V8 |
| Material | 304 stainless steel |
| Headers | 2" primaries; 3" collectors |
| Choices | Competition Only, GREEN or H.O. GREEN |
| OEM adapters | Included; H.O. GREEN kit specifies 3" to 2-3/4" |
| Fitting parts | O2 extensions, gaskets and installation hardware |
| H.O. GREEN substrate | 300 CPSI in 4-1/2" bodies |
Frequently asked questions
Do I need to buy OEM adapters separately?
The kits include OEM adapters. The H.O. GREEN package specifies the 3" to 2-3/4" transition.
Is this for the earlier 5.4 or 5.8 GT500?
This page is the supercharged 5.2-litre GT500 package. Earlier GT500 generations have different kits.
