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Complete your Mustang headers with Ultra-GREEN front pipes
Add Ultra-GREEN catted front connections to your Kooks header installation. These 3" stainless pipes use ball-and-socket header joints and Ultra-GREEN catalysts with a 4-1/2-inch, 400-cell high-flow substrate, suitable for forced-induction Mustang 5.0 builds as well as naturally aspirated applications.
SKU: 11513C50
Choose your rear connection as part of the purchase
These pipes require matching Kooks headers. For the factory rear exhaust, choose either the direct OEM-adapter route or the 11513700 ULTRA X-pipe route.
Add the fitting parts for your installation
The front connection pipes use 16-gauge 304 stainless steel. Clamps are not included with 11513C50. The direct adapter route needs separately purchased adapters and clamps; the 11513700 ULTRA X-pipe route supplies its mid-pipe adapters and fitting clamps.
Matching products
For a supported Mustang 5.0 using the factory rear exhaust, the 11513000-2 OEM adapter pair adapts both pipes. The pair is supplied without clamps. Alternatively, the 11513700 ULTRA X-pipe provides the crossover route to the OEM rear system and includes its mid-pipe adapters and fitting clamps. Choose the rear route that suits your exhaust.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2015-2026 | Ford Mustang GT | 5.0L V8 | 11513C50 | |
| 2015-2026 | Ford Mustang GT Premium | 5.0L V8 | 11513C50 | |
| 2015 | Ford Mustang GT 50 Years Limited Edition | 5.0L V8 | 11513C50 | |
| 2019-2020 | Ford Mustang Bullitt | 5.0L V8 | 11513C50 | |
| 2021-2023 | Ford Mustang Mach 1 | 5.0L V8 | 11513C50 | |
| 2024-2026 | Ford Mustang Dark Horse | 5.0L V8 | 11513C50 | |
| 2024-2025 | Ford Mustang Dark Horse | 5.0L V8 | 11513C50 | |
| 2024-2025 | Ford Mustang Dark Horse Premium | 5.0L V8 | 11513C50 |
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 |
|---|---|
| SKU | 11513C50 |
| Applications | Supported 2015-2026 Mustang 5.0L trims below |
| Material | 3" 16-gauge 304 stainless steel |
| Header joint | Ball and socket |
| Catalyst | Ultra-GREEN; 4-1/2-inch, 400-cell high-flow substrate |
| Catalyst suitability | Suitable for forced induction |
| Required front | Matching Kooks headers |
| Required rear | Direct 11513000-2 OEM-adapter route or 11513700 ULTRA X-pipe route |
| OEM adapter pair | 11513000-2; separate purchase for the direct route |
| Clamps | Not supplied with 11513C50; buy separately for the direct adapter route; fitting clamps included with 11513700 ULTRA X-pipe |
Frequently asked questions
Do these pipes connect to the stock rear exhaust on their own?
Use the 11513000-2 adapter pair and the required clamps, or choose the 11513700 ULTRA X-pipe route with its included mid-pipe adapters and fitting clamps.
Are clamps included?
Clamps are not supplied with 11513C50. Add them for the direct adapter route; the 11513700 ULTRA X-pipe alternative includes its fitting clamps.
Are the headers part of this listing?
This listing supplies the Ultra-GREEN front connection pipes. Matching Kooks headers are separate.
