Win A 2018 RTR Spec 3 Mustang Enter Now!
Talk to a Mustang Expert
Mon - Sun, 8:30 AM EST - 11:00 PM EST

2 More Days for Free Shipping! Get it by Dec 24th available on most items - Details

Kooks GREEN Catted H-Pipe (05-10 GT w/ Long Tube Headers)

Market Price $1,246.25 You Save 10% ($124.62)
Our Price

$1,121.63 (each)

FREE Shipping
  • Item 390849
  • MPN# 11313610

In Stock Ships same business day. Choose options to add to cart

Features & Details

  • Durable Stainless Steel Construction
  • Kooks High-Flow GREEN Cats
  • Facilitate the 2-1/2" OEM Exhaust
  • Performance, Yet Street Legal
  • Works on Applications up to 800 Horsepower
  • Withstands Temperatures up to 1500 Degrees
  • Fits 2005-2010 GT and Bullitt Mustangs w/ Kooks Long Tubes
Improved Sound and Performance. Let folks know that you are coming and most likely going to pass them with your 2005-2010 Mustang GT equipped with Long Tube Headers and a Kooks GREEN Catted H-Pipe that is 49 state street legal. The H-pipe is specifically designed to replace the factory catalytic converters and facilitate the installation of aftermarket long tube headers. The Kooks GREEN Catted H-Pipe is a great option for Mustang enthusiasts that want a daily driver that still performs and sounds good on the track or drag strip. The H-pipe produces a deep powerful tone and the catalytic converters are 49 state EPA certified.

Durable Long Lasting Construction. This Kooks GREEN Catted H-Pipe is constructed using long lasting stainless steel. This material is durable and rust resistant to withstand the elements and temperatures up to 1500 degrees.

Easy, Bolt-On Installation. There is no welding required to complete this exhaust modification. The Kooks GREEN Catted H-Pipe bolts-up to the required 3-inch Kooks long tube headers and fits the existing 2-1/2-inch OEM exhaust system. The pipe is secured with exhaust clamps which are provided.

Application. This Kooks GREEN Catted H-Pipe is designed to fit all 2005-2010 GT and Bullitt Mustangs equipped with Kooks 3" Long Tube Headers.

Fitment: 2005 2006 2007 2008 2009 2010 Details

What's in the Box
  • (2) Catalytic Converters
  • (1) Stainless Steel H-pipe
  • (2) Exhaust Clamps
Installation Info
Tech Specs
Mid Pipe Specifications
Style Mid Pipe: H-Pipe Type Headers Required: Kooks Long Tube Headers
Piping Material: Stainless Steel Piping Size: 2.5"
Catalytic Converter: Yes Fitment: 2005-2010 GT, Bullitt
Will it fit my Mustang?
  • GT - 05, 06, 07, 08, 09, 10
  • Bullitt - 08

Requires Kooks Long Tube Headers

Customer Photos

You Might Also Like

3 Questions / 5 Answers

Ask a Question

I have an 06 GT just want to know if this Off-Road H-Pipe is able to be equipped onto my Borla ATAK Axel Back Exhaust System since I already have PYPES Standard Mid-Pipe but I’m thinking about switching over to between an X or an H Pipe but don’t know which Off-Road is the best? If any of you guys know which is the best, please let me know, thanks..


  • The Kooks GREEN Catted H-Pipe will work with the Borla ATAK Axle Back. The best mid pipe would depend on your preference and application. You can find all our H Pipe options for your 06 GT here:


Helpful (0)

Can I install SLP Loudmouths with these?


  • The SLP loud mouth mufflers can be installed with the Kooks GREEN Catted H-Pipe.

    Pat K

Show 1 more answer Helpful (0)

I have a 2010 gt, will I need a tune with these to prevent cel light


  • The Kooks GREEN Catted H-Pipe (05-10 GT w/ Long Tube Headers) should not make the MIL light come on. Though, it is a good idea to tune the car any time you are adding a part that changes the air flow.


Show 1 more answer Helpful (0)

More Products You Might Like

Customer Reviews (1) Write a Review

Overall Rating 5.0

out of 5 stars

Installation Time:Afternoon

  • Loudness / Volume 4 4
  • Exhaust Note 5 5
  • Fit & Finish 4 4
  • Bang For Your Buck 5 5

  • 5/5

    Installation Time: Afternoon

    February 18, 2017

    Great !

    Friend put these on the mustang gt and they sound phenomenal. Deep muscular sound. Would recommend to anyone.


    Year: 2009 Submodel: GT

    Helpful (1)

Related Mustang Categories