
Specifications
- Brand
- Kooks Headers
- Part #
- 11423300
- UPC
- 842422156688

Kooks 11-14 Ford Shelby GT500 5.4L / 5.8L 4V 3in x 2 3/4in OEM GREEN Cat SS X-Pipe Kooks HDR Req
$2074.98
Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.
Fits 2011-2014 Ford Mustang Shelby GT500. Kooks 3in. x 2-3/4in. catted X-pipe made from T304 stainless steel for improved exhaust flow.
Key Features
- Fits 2011-2014 Ford Mustang Shelby GT500 with 5.4L or 5.8L 4V engines.
- Constructed from T304 aircraft-quality stainless steel for durability and corrosion resistance.
- Features 3-inch inlet pipes transitioning to 2-3/4 inch outlets designed to connect to the OEM exhaust.
- Includes Kooks GREEN 400-cell high-flow catalytic converters, suitable for forced induction.
- Designed to be used with Kooks long tube headers.
- Ball and socket style connection to headers for a secure fit.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Fits this vehicle
- Ford Mustang 2011-2014
Product Details
This Kooks catted X-pipe is built from T304 aircraft-quality stainless steel, a strong material that resists corrosion and handles the heat from your 5.4L or 5.8L 4V engine. It's specifically designed for the 2011-2014 Ford Shelby GT500, featuring a 3-inch inlet that transitions to a 2-3/4 inch outlet to connect with your factory exhaust system using the original clamps. This setup is intended to be used with Kooks long tube headers and includes Kooks GREEN high-flow catalytic converters, which are a 400-cell design suitable for forced induction applications.
Kooks has been in the performance exhaust business for over 50 years, and they build their systems in the USA. This X-pipe is dyno and race tested to ensure it's designed for maximum power. The ball and socket style connection to the headers helps create a solid seal, and the overall construction is meant to fit and install well. Keep in mind that this system is not CARB approved and cannot be shipped to California.
Specifications
- Brand
- Kooks Headers
- Manufacturer Part #
- 11423300
- UPC
- 842422156688
Frequently Asked Questions
You Might Also Like
Similar products from the same category

Kooks 2007+ Jeep Wrangler JK w/LS Swap 3in Catted SS Y-Pipe Kooks Headers Required

Kooks 11-14 Ford Mustang GT 5.0L 4V 3in x 2 3/4in OEM Exhaust GREEN Cat H Pipe Kooks HDR Req

Kooks Universal 3in Short Turnouts SS 6in Long. Fits 3in Muffler

Kooks 2016 + Chevrolet Camaro SS LT1 6.2L 3in x 2 3/4in OEM High Flow Catted Connections Pipes SS
Kooks 11-14 Ford Shelby GT500 5.4L / 5.8L 4V 3in x 2 3/4in OEM GREEN Cat SS X-Pipe Kooks HDR Req
