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

Market Price $782.35 You Save 12% ($90.00)
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$692.35 (pair)

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  • Item 100514

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    Features, Video & Details

    • 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

    Review & Installation Video

    Review & Install Video

    Error on line: 4 Now, that same excellent craftsmanship that you find with every set of Kooks headers has definitely found its way over to this Axle-Back. Quality of materials is all there, including the full 304 grade stainless construction throughout, including the four-inch hand polished tips, which are removable, and the void of any logos for a cleaner look. Now, the removable tips will be nice when you ever want to remove them and clean the tips in the future. And when you do install the Axle-Back for the first time, the removable tips will make things a little easier getting everything lined up in the bumper. In addition, this Axle-Back does feature two and a half inch Mandrel Bent Tubing and Kooks three-inch oval race mufflers, which do keep sound levels down to a reasonable level. Error on line: 6 So with that said, if you're looking for the most sound possible out of your Three-Valve or Shelby, well then you might want to check out the Kooks Catback system for either car, which does utilize a different muffler entirely, giving you a little bit more sound. Either way, if you do want to learn more about this particular exhaust from Kooks, just click the link below to head back to the product page, and while you're there, read up on some customer reviews and check out some customer photos. Since this Axle-Back is a direct factory replacement for the '05 to '10 cars, getting it installed onto your Mustang should be a very straightforward task that should take you about two hours at the very most from start to finish. Error on line: 8 Now, if you should have anymore questions about this Axle-Back from Kooks, or any other product here on this site, well then reach out to one of our Mustang experts by phone or e-mail. They are always standing by ready to give you a hand. Now let's hear how the Kook's Performance Axle-Back sounds compared to our factory exhaust.

    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 -

    What's in the Box
    • (2) Axle-Back Muffler assemblies
    Installation Info
    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 Muffler Fitment: 2005-2009 GT, Bullitt, GT500
    Will it fit my Mustang?

      Customer Photos

        Questions & Answers (2)

        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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          Customer Reviews (1) Write a Review

          Overall Rating 3

          out of 5 stars

          Installation Time:Less than 1 Hour

          • Loudness / Volume 3 3
          • Exhaust Note 4 4
          • Fit & Finish 3 3
          • Bang For Your Buck 2 2

          • 3/5

            Installation Time: Less than 1 Hour

            April 17, 2014

            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.


            Year: 2006 Submodel: GT Colorado

            Helpful (19)

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