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Kooks Performance Axle-Back Exhaust (05-09 GT, GT500)

Item 100514
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$692.35 (pair)

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      Review & Installation Video

      Error on line: 4Now, that same excellent craftsmanship thatyou find with every set of Kooks headers hasdefinitely found its way over to this Axle-Back.Quality of materials is all there, includingthe full 304 grade stainless constructionthroughout, including the four-inch hand polishedtips, which are removable, and the void ofany logos for a cleaner look. Now, the removabletips will be nice when you ever want to removethem and clean the tips in the future. Andwhen you do install the Axle-Back for thefirst time, the removable tips will make thingsa little easier getting everything lined upin the bumper. In addition, this Axle-Backdoes feature two and a half inch Mandrel BentTubing and Kooks three-inch oval race mufflers,which do keep sound levels down to a reasonablelevel.Error on line: 6So with that said, if you're looking for themost sound possible out of your Three-Valveor Shelby, well then you might want to checkout the Kooks Catback system for either car,which does utilize a different muffler entirely,giving you a little bit more sound. Eitherway, if you do want to learn more about thisparticular exhaust from Kooks, just clickthe link below to head back to the productpage, and while you're there, read up on somecustomer reviews and check out some customerphotos. Since this Axle-Back is a direct factoryreplacement for the '05 to '10 cars, gettingit installed onto your Mustang should be avery straightforward task that should takeyou about two hours at the very most fromstart to finish.Error on line: 8Now, if you should have anymore questionsabout this Axle-Back from Kooks, or any otherproduct here on this site, well then reachout to one of our Mustang experts by phoneor e-mail. They are always standing by readyto give you a hand. Now let's hear how theKook's Performance Axle-Back sounds comparedto our factory exhaust.

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Aggressive Muscle Car Exhaust Note
      • 3" Oval Race Mufflers
      • 2.5" Stainless Steel Tubing
      • 4" Polished T304 Stainless Steel Tips
      • Direct Fit Replacement Upgrade
      • Fits 2005-2009 GT, Bullitt And Shelby GT500 Mustangs


      Aggressive Exhaust Note. Give your V8 powered Mustang the loud aggressive exhaust note of a classic 60's muscle car with a Kooks Performance Axle-Back Exhaust system, that features oval stainless steel race mufflers.

      Durable Stainless Steel Construction. Constructed from 2.5" diameter stainless steel tubing for strength and corrosion resistance, this Kooks Performance Axle-Back exhaust system features two high flow 3" Oval Race Mufflers that end with 4" polished T304 stainless steel slant cut exhaust tips.

      Application. This Kooks Performance Axle-Back Exhaust Kit is specifically designed to fit the 2005-2009 GT, Bullitt and Shelby GT500 Mustangs.

      Fitment: 2005 2006 2007 2008 2009 Details

      MPN# 11306100

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (1)

      Write a Review

      Ratings Summary

      3.0 out of 5 overall rating from 1 customers

      Installation Time: Less than 1 Hour

      • April 17, 2014

        3 2006 GT - Tungsten06GT Installation Time: Less than 1 Hour

        not what you would expect from kooks

        I decided to wait a while to review these as they are a straight through muffler and I expected them to get louder, and they did. They are still fairly quiet. I have had the flowmaster axle back, corsas, stock, and deletes. These are slightly louder than stock outside and quieter inside, unless your on it you don't know they are there, and even when I romp on it my cai makes more noise. They don't fit very well out of the box, they push the stock mid pipe up enough to cause it to rattle against the body on bumps. Even after a lot of adjustment they still aren't quite right, not what you expect for the price. A second effect of waiting to review these is I noticed they are rusting heavily at all the weld seems! Again, not what I would expect for the price, or the brand, this never happened with my Corsa pipes, or even the stock mufflers. Overall: very disappointed, I'll be looking to replace these sooner than later.

        Helpful (21)

      Questions & Answers (2 answers)

      2 Top Rated Questions

      Hello, I purchased the Kooks Performance Cat-Back Exhaust (05-09 GT, GT500) for my 2007 4.6l GT and would like to know if these mufflers would fit with the cat-back tubing. Your help is much appreciated. Thanks!

      • Yes, these mufflers will be compatible with the cat-back tubing due to the sizes being the same.

      Helpful (1)

      I have a 2010 Mustang gt M/T, i have already had kooks long tube headers and kooks off road x pipe installed on my car. I have kept my factory axle back exhaust on for a couple years but Im looking for a more deeper aggressive sound. I also have the ford racing camshafts installed to make my car sound like the mustangs in the good ol days. With these Kooks exhaust will it be too loud replacing the factory axle back? I dont want a ticket but when i stomp on the gas i want to hear the loudness. When tooling around town i want it to be lower so the cops dont pull me over. Any advise?

      • With sound being subjective, it would be difficult to determine which axle back would be best suitable for your application. Any aftermarket axle back would be louder than your factory axle back. With that said, there are a couple options that would allow you to adjust the sound output. They would be the: BBK Varitune Axle-Back Exhaust, item number 56239 (MPN: 41005) X-Force Varex Axle-Back Exhaust, item number 386427 (MPN: ES-FM10-VMK-ABS). If you would like to keep the sound of your factory axle back you could add the: Pypes Electric Exhaust Cutout Kit, item number 20044 (MPN: HVE10K).

      Helpful (0)
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      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Axle-Back Muffler assemblies

      Tech Specs

      Axle-Back Exhaust Specifications
      Piping Material:Stainless Steel Tip Material :Polished 304 Stainless Steel
      Piping Size:2.5"Tip Size:4"
      Muffler Type:Race MufflerFitment:2005-2009 GT, Bullitt, GT500

      Will It Fit My Mustang

      • Bullitt - 08, 09
      • GT - 05, 06, 07, 08, 09
      • GT500 - 07, 08, 09

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