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Whipple W175AX 2.9L Supercharger Upgrade Kit (07-12 GT500)

Market Price $4,740.99 You Save 17% ($790.00)
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$3,950.99 (kit)

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  • Item 102470
  • MPN# WK-2500TB

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    Features & Details

    • 2.9L Twin Screw W175AX Whipple Supercharger
    • Boost Range 10 - 25 psi
    • Black Wrinkle Finish
    • Bolt-On Replacement
    • Clears Stock Factory Hood
    • CARB EO Number: D-231-35
    • Fits 2007 to 2012 Shelby GT500
    Craving More Power? Is your factory Eaton Supercharged Shelby GT500 not making enough power for your needs? Then upgrade to a W175AX 2.9L Twin Screw Whipple Supercharger compressor for big power gains from your DOHC 4-valve 5.4L GT500 Mustang.

    W175AX 2.9L Upgrade Kit. This Whipple W175AX 2.9L Twin Screw compressor is a direct bolt-on replacement that gives you the ability to run far higher boost levels than the factory 2.1L roots-type supercharger will allow, while dramatically lowering supercharger discharge temperatures and power consumption (hp).

    10 - 25 psi. The Whipple 2.9L Supercharger will produce up to 10psi of boost with the factory supercharger pulley and can even handle a maximum 25psi of boost pressure with pulley and intake upgrades for unheralded power and performance.

    50 State Legal. Unlike the competitors, this Ford Racing Supercharger Kit is 50 state emissions legal under CARB EO# D-231-35.

    Required Upgrade. Installation of this Whipple Supercharger upgrade kit will require custom calibration of your vehicles computer (PCM) for operation (not included). AmericanMuscle recommends the use of a Handheld Tuner loaded with custom tunes.

    Application. This Black Whipple 2.9L W175AX Supercharger Upgrade Kit is designed as a direct fit performance upgrade for the 2007 to 2012 Shelby GT500 Mustangs equipped with the Supercharged 5.4L DOHC V-8 engine.

    Please Note: Whipple Supercharger Kits are built to order for our customers. Because of this there can be a 10 to 14 day lead time on orders.

    Fitment: 2007 2008 2009 2010 2011 2012 Details

    CA Residents: WARNING: Cancer and Reproductive Harm -

    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    Questions & Answers (10)

    5 Top Rated Questions

    What does this kit include other than the head unit? Do i reuse any parts off my original supercharger or does this come with everything i need ie throttle body, cold air intake, ect?

    • The Whipple 2.9L Supercharger Upgrade Kit is a direct bolt on replacement for the stock super charger. You will reuse your stock parts.

    Helpful (1)

    Would you recommend bigger fuel injectors? If so what size? I am running the mono blade throttle body and custom off road exhaust with the 3" pulley how much boost am I looking at running 92 octane.

    • It is a good idea to upgrade the fuel injectors when installing the Whipple Black Supercharger Upgrade Kit. If you are looking to make a lot of power, we recommend the Injector Dynamics EV14 High Impedance ID1000 Injectors - 96 lb (07-14 GT500), item # 100541, ( If you are going with something else, you will need a EV14 model injector for your car. The amount of boost you get all depends on other applications on the car.

    Helpful (1)

    horsepower increase

    will stock internals other than fuel injectors on a 2009 gt500 be safe with this kit ?

    Can a stock 4.6 everything handle this kind of power? What kinda power can the transmission and engine handle

    • . This Black Whipple 2.9L W175AX Supercharger Upgrade Kit is designed as a direct fit performance upgrade for the 2007 to 2012 Shelby GT500 Mustangs equipped with the Supercharged 5.4L DOHC V-8 engine and will not work on the 4.6L models.

    Helpful (0)
    Post Your Question
    5 More Questions
    If I put this blower on my 12 GT500, will I have to upgrade anything else besides the tune ?? Or can I just keep the blower on 1 answer
    Why can I not find this supercharger in the polished finish instead of black. I have been wanting to buy one but really want the polished look. 1 answer
    Do i need to order any additional parts for a complete install kit other than the handheld tuner? 1 answer
    Could you run the 2.9L Whipple with a 2.6 inch pulley upgrade? Might that push the over the max 25 psi? 1 answer
    what size pulley does this SC come with? 1 answer

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    Customer Reviews (3) Write a Review

    Overall Rating 4.3

    out of 5 stars

    Installation Time:Afternoon

    • Performance Gain 5 5
    • Fit 3.666667 3.7

    • 5/5

      Installation Time: Afternoon

      December 24, 2018


      Great upgrade for the old stock eaton 2.3. somewhat quieter and smoother with quite a bit more power.


      Year: 2011 Submodel: GT500

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      May 27, 2016

      Extremely satisfied!

      The blower went on a 2011 gt500 with only a CAI. With a tune it has 639hp 595tq at 17psi. The blower has much more power to give but with only 91 octane that's the best I got. Still I'm satisfied with the power and with the product maybe later I will install a meth kit and I'll be around 22psi. Once again thanks to American muscle and whipple.


      Year: 2011 Submodel: GT500

      Helpful (20)

    • 3/5

      Installation Time: Afternoon

      May 13, 2016


      Gives very good power and such a nice set up Had friends help with my Gt500 to install this


      Year: 2008 Submodel: GT500

      Helpful (18)

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