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Enjoy the V8 sound with a polished rear exhaust finish
This Kooks cat-back gives your Mustang a stainless rear exhaust upgrade with polished oval mufflers and 4" tips. The 2-1/2" pipework connects at the OEM point, making it a rear upgrade you can fit before planning a header conversion.
SKU: 11304150
Keep the factory front arrangement
The system joins the OEM exhaust using the existing clamps. It also connects to a Kooks X-pipe or H-pipe with the same 2-1/2" outlet, giving you a compatible front-upgrade route later.
Choose for the GT and GT500 years
The application is 2005-2009 GT 4.6 and 2007-2009 GT500 5.4. Mandrel-bent 16-gauge 304 stainless tubing, polished oval mufflers and polished tips form the rear system.
Matching products
The full 3-inch rear exhaust is an alternative for the same supported Mustang years when you have Kooks X/H-pipes with full 3-inch outlets. It is not the direct OEM-front route.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2005-2009 | Ford Mustang GT | 4.6L V8 | 11304150 | |
| 2007-2009 | Ford Mustang Shelby GT500 | 5.4L V8 | 11304150 |
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 | 11304150 |
| Applications | 2005-2009 Mustang GT 4.6L; 2007-2009 GT500 5.4L |
| Material | 16-gauge 304 stainless steel; mandrel-bent |
| Pipe diameter / interface | 2-1/2" / OEM connection |
| Mufflers / tips | Polished stainless oval mufflers; 4" polished tips |
| Alternative front route | Kooks X-pipe / H-pipe with 2-1/2" outlets |
| Clamps | OEM clamps reused |
Frequently asked questions
Do I have to fit headers too?
The cat-back connects to the OEM exhaust, so it can be a rear-only upgrade.
Will it join a full 3-inch crossover?
This system uses the 2-1/2" interface. Choose the 3" rear system for a crossover requiring that outlet.
