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Kooks Off-road X-pipe (05-10 GT w/ Long Tube Headers)

AmericanMuscle no longer carries the Kooks Off-road X-pipe (05-10 GT w/ Long Tube Headers). Please check out 2005-2009 Mustang X-Pipes For Long Tube Headers for an updated selection.
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Features & Details

  • Required for Kooks Long Tube Headers
  • Improves Exhaust Flow and Sound
  • Raspy Race Car Growl
  • For Off-Road, Track Use
  • 2-1/2" Mandrel-Bent 304 Stainless Steel Tubing
  • Fits 2005-2010 GT and Bullitt Mustangs
Increase Performance. Eliminate those power robbing factory catalytic converters with a Kooks Off-road shorty X pipe to add even more horsepower and torque to the rear wheels of your 4.6L Mustang. This Kooks x-pipe is specifically designed to be used with Kooks Long Tube Headers.

Race Car Growl. This free flowing Kooks x-pipe for the 2005-2010 GT Mustang's not only increases power, but it also adds a crisp raspy, race car growl to the sound of your exhaust with its modern "X" crossover pipe design.

Quality Construction. Manufactured from 2.5" diameter mandrel bent 304 stainless steel tubing, Kooks x-pipes feature a merged "X" crossover for superior exhaust flow.

Application. This Kooks Shorty Off-road X-Pipe is specifically designed to fit the 2005-2010 4.6L GT and Bullitt Mustangs with either Kooks Manual or Automatic Long Tube Headers installed.

Technical notes. Not legal for use on pollution controlled motor vehicles; intended for off road use only.

Fitment: 2005 2006 2007 2008 2009 2010 Details

MPN# 11313100

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (1) X-pipe
  • (2) Down pipes
  • (2) Clamps
Installation Info
Tech Specs
Mid Pipe Specifications
Style Mid Pipe: Shorty "X" Type Headers Required: Kooks Long Tube
Piping Material: 304 Stainless Steel Piping Size: 2.5"
Catalytic Converter: "NO" - For off-road use only Fitment: 2005-2010 GT & Bullitt
Will it fit my Mustang?

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Customer Reviews (7) Write a Review

Overall Rating 5

out of 5 stars

Installation Time:Afternoon

  • Performance Gain 4.166667 4.2
  • Fit 4.833333 4.8

  • 5/5

    Installation Time: Less than 1 Hour

    March 21, 2019


    Easy install. My 08 mustang gt had long tub headers when i bought it. Unsure of the brand of headers but x pipe installed just fine.


    Year: 2008 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Weekend

    August 28, 2018

    Sounds great, and increase throttle response

    Not easy but ended up getting it done with floor Jacks and some basic tools


    Year: 2005 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Full Day

    April 09, 2018

    Kooks off road xpipe

    Taking off my short ford header and putting on Kooks Long Tube Header for better sound and horse power


    Year: 2008 Submodel: GT

    Helpful (5)

  • 5/5

    Installation Time: Less than 1 Hour

    December 17, 2015

    Great quality and fitment, but you pay for it!

    Great product little pricey if you ask me for just some bent pipe. But went together well, use two people if you can to help hold while you tighten the clamps makes it alot faster. Had the other out and this in about 30 mins


    Year: 2005 Submodel: GT Atlanta ga

    Helpful (6)

  • 5/5

    Installation Time: Afternoon

    September 05, 2015

    Great improvement!

    Had the catted x-pipe, but wanted to be louder. Mission accomplished! It's about the same at idle but really wakes up when you get on the throttle. I managed to to swap it out in an afternoon and on jack stands.


    Year: 2010 Submodel: GT Las Vegas

    Helpful (6)

  • 5/5

    Installation Time: Full Day

    May 29, 2015

    Kooks long tubes o/r x

    Received two sets of bbk long tubes with I/r x pipe and the headers did not fit. Bolt wouldn't go through the flange and the x pipe was bent more problems but hard to explain on a computer. Bought kooks and had no problem at all. Fit perfect. Expensive but obviously worth it


    Year: 2008 Submodel: GT

    Helpful (5)

  • 5/5

    Installation Time: Afternoon

    June 18, 2014

    Well worth it

    I purchased this product because i wanted my car to have a little bit more horse power and louder. Both worked out very well. i had Corsa racing mufflers on it before and now i have Borla S type. It makes the car sound way nicer and meaner. I always get looks when driving because the vibration that comes out of the exhaust is awesome. I also have kooks long tube headers which makes the car even louder. It is a lot easier to install with long tube headers because the O2 sensors are closer, while with stock headers it is a annoying to unplug the O2 because it is on top of the transmission. all in all i totally recommend this product!


    Year: 2008 Submodel: GT New Jersey, USA

    Helpful (6)

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