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2015-2023
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Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
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Kooks 3-Inch to 2.75-Inch GREEN Catted X-Pipe (11-14 Mustang GT500 w/ Long Tube Headers)Find parts that fit my vehicle
Item 390879
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$1,903.42
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Product Information
Features, Description, Q&A, Specs & Installation
Features & Specs
- 3" Durable Stainless Steel Construction
- Kooks High-Flow GREEN Cats
- Connects to 2-3/4" Factory Exhaust
- Performance, Deep Tone and EPA Certified
- Works on Applications up to 800 horsepower
- Withstands Temperatures up to 1500 Degrees
- Fits 2011-2014 Shelby GT500 Mustangs w/ Kooks Long Tube Headers
| Brand | Kooks |
| Exhaust Pipe Type | X-Pipe |
| Exhaust Pipe Material | Stainless Steel |
| Fits Long Tube Headers | Yes |
Description
Let The Beast Out. Your GT500 is already a formidable performance machine. Let it reach its true potential with a Kooks GREEN cat X-pipe. Used along with the required Kooks long-tube headers, this combination serves up massive increases in horsepower and torque, and a sound that will make you forget to turn on the stereo.
Green Catalytic Converters. GreenCats are Kooks ultra high performance green catalytic converters. Kooks specifically designed these Catalytic Converters to meet stringent EPA Federal Emissions Standards. Able to handle exhaust temperatures of up to 1500F, these GreenCats work exceptionally well on both force inducted and naturally aspirated Mustangs. GreenCats have a 90% success rate of eliminating emission related "Check Engine Light" issues.Built to Last While Going Fast. High-quality T304 stainless steel is mandrel-bent by Kooks to make the smoothest exhaust path possible. This X-Pipe allows you to retain the stock 2 ¾" tailpipe and muffler on your GT500. This X-Pipe is made in the USA and covered under Kook's limited lifetime warranty.
Easy, Bolt-On Installation. The Kooks GREEN Catted X-Pipe is a bolt-on application that does not require welding, cutting or drilling. The X-Pipe bolts up to Kooks 3" Long Tube Headers clamping to the existing 2-3/4" OEM exhaust system. All of the required mounting hardware is provided.Application. This Kooks Green Cat Catted X-Pipe with is specifically designed to fit the 2011 to 2014 Shelby GT500 Mustangs equipped with the supercharged 5.4L/5.8L V8 engine. This X-Pipe is intended to be installed with 3" Kooks Long Tube Headers.
Technical Note. This product is not legal for use in California or any other state adopting California emission standards. Not legal for use on pollution controlled motor vehicles; intended for off road use only. These Headers are intended for left hand drive applications only.
Kooks GREEN Catted products are rated for forced induction applications making up to 750 RHWP and are built to EPA specifications.
Fitment:
DetailsKooks 11423300
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Catted X-Pipe Assembly
Tech Guides:
4.8
Reviews of Kooks Exhaust Products (500+)
Reviews of Kooks Exhaust products have an average rating of 4.8 out of 5
Questions & Answers
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Will It Fit My Mustang
- GT500 - 11, 12, 13, 14
