-9%
Click to zoom in
SKU: 11543200 | UPC: 842422130664
Kooks 3" GREEN Catted Connection Pipes for 2015–2020 Ford Mustang Shelby GT350 / GT350R 5.2L Voodoo
The Kooks 11543200 3-inch GREEN catted connection pipes complete the exhaust upgrade on 2015–2020 Shelby GT350 and GT350R models with the 5.2L Voodoo V8, linking Kooks long tube headers directly to the factory mid-pipe for seamless integration that maintains 49-state emissions compliance while adding 20–30 rear-wheel horsepower and 25–35 lb-ft of torque through high-flow 300-cell metallic substrate GREEN catalytic converters and mandrel-bent tubing.
Handcrafted from T304 aircraft-quality stainless steel with 3/8-inch laser-cut flanges and full TIG welds, these pipes ensure zero leaks under extreme heat and support over 850 HP from tunes or supercharger kits without sacrificing ground clearance or daily drivability. The design preserves the GT350’s iconic flat-plane crank scream while delivering a deeper, more aggressive tone at wide-open throttle and refined quietness at cruise.
For Shelby GT350 owners pairing Kooks headers with stock exhaust, the 11543200 GREEN catted connection pipes are the essential emissions-legal link that maximizes Voodoo performance with track-proven reliability.
Key Features
- 3-inch mandrel-bent T304 stainless steel tubing
- GREEN 300-cell high-flow metallic catalytic converters
- Direct bolt-on to Kooks headers and OEM mid-pipe
- 3/8-inch laser-cut flanges with full TIG welds
- Supports 850+ HP with proper tuning
- Preserves factory heat shielding and ground clearance
Product Notes
- 49-state EPA compliant not for sale or use in California or CARB states without exemption
- Requires Kooks long tube headers for proper fitment
- Includes all hardware and gaskets
California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.
Warranty: Limited lifetime on stainless construction and 25,000 miles on catalytic converters to original purchaser.
Installation Notes
- Professional installation recommended lift required
- Bolt pipes to Kooks header collectors with supplied gaskets
- Connect to OEM mid-pipe using included hardware
- Torque flanges to 25-30 ft-lbs and check for leaks after heat cycle
This Part Fits
| Year | Make | Model | Submodel/Engine |
|---|---|---|---|
| 2015–2020 | Ford | Mustang | Shelby GT350 / GT350R - 5.2L Voodoo V8 |
Note: Fits all 2015–2020 Shelby GT350 & GT350R with Kooks long tube headers. Manual transmission only.
What's Included in the Purchase
- (2) 3" GREEN Catted Connection Pipes
- Gaskets and Flange Hardware Kit
- Detailed Installation Instructions
- Part Number: Kooks 11543200
Why Choose Kooks?
- Over 60 years of championship-winning exhaust engineering
- Handcrafted in the USA from T304 aircraft-quality stainless steel
- Limited lifetime warranty and dyno-proven performance
Frequently Asked Questions
-
Q: Does this work with factory headers?
A: No, designed specifically for Kooks long tube headers -
Q: Is it emissions legal?
A: Yes, 49-state EPA compliant with GREEN cats -
Q: How loud is it?
A: Aggressive flat-plane scream at WOT, refined at cruise
Shipping & Handling
- Method: UPS or Fed Ex Ground.
- Availability: Typically ships same day or next if in stock.
- Packaging: Heavy-duty box with foam protection.
Read More
Exhaust Systems
Find the right performance exhaust system for your car, truck, or SUV with our curated selection of stainless-steel upgrades engineered for power, sound, and reliability. Browse proven layouts like cat-back, axle-back, and turbo-back systems, dial in flow with headers & manifolds and downpipes, or tailor your tone with mufflers & resonators and polished exhaust tips. We also stock emissions-minded solutions including direct-fit catalytic converters and universal catalytic converters. Shop top brands such as Akrapovič, AWE Tuning, Borla, Invidia, GReddy, Perrin, Banks Power, and Gibson. Every option is selected for quality construction (think mandrel-bent tubing and precise welds) and bolt-on fitment, and our Year/Make/Model search makes it easy to match parts to your build—upgrade throttle response, unlock a deeper, refined exhaust note, and enhance your vehicle’s style with components that deliver performance you can feel. View Our Exhaust Systems Products...
Ford Mustang Parts & Accessories
There are many parts and accessories available for the Ford Mustang, Black Ops Auto Works has everything for your specific needs. Be sure to do your research, choose the parts that fit your specific model and budget. As always, contact our experienced sales team if you have any questions. Check out the many Ford Mustang parts and accessories available below. Find all the latest Air Intake Systems,Brakes, Rotors & Pads, Exhaust Systems, Engine & Cooling (Radiators), Exterior Trim Accessories, Floor Mats, Interior Accessories, Lighting, Performance Parts, Suspension, Wheels & Tires and many other Special Offers for your Ford Mustang. View Our Ford Mustang Parts & Accessories Products...
Kooks Exhaust
The Kooks Exhaust collection at Black Ops Auto Works features premium American-made exhaust systems and components engineered for maximum performance, sound, and durability. With more than 60 years of racing heritage, Kooks is trusted by enthusiasts, professional builders, and championship-winning race teams across drag racing, road racing, and high-horsepower street applications. American-Made Performance Exhaust Systems Founded in 1962 by George “Papa” Kook, Kooks Exhaust has built its reputation on precision craftsmanship and real-world results. Every system is manufactured in the USA using high-quality stainless steel and race-proven fabrication methods to deliver consistent horsepower gains and aggressive exhaust tone. Headers, Exhaust Systems & Performance Components The Kooks Exhaust lineup at Black Ops Auto Works features premium, American-made exhaust systems and components engineered for maximum performance, sound, and durability. With decades of racing heritage, Kooks... View Our Kooks Exhaust Products...