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Whipple W175AX 2.9L Intercooled Supercharger Kit - Stage 2 (15-17 GT)

Item 393626
Market Price $9,834.00 You Save 14% ($1,389.00)
Our Price

$8,445.00 (kit)

+ $49.00 Handling Fee with FREE Shipping

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    Features, Video & Details

    • Unbeatable Bolt-On Power Gains - Up to 90%
    • Twin-Screw Supercharger
    • Air-to-Water Intercooler
    • Billet High-Flow Electronic Throttle Body
    • 50-State Emission Legal
    • Complete Easy-Install Kit
    • Easily Upgraded
    • Requires Tuning
    • 1-Year Limited Whipple Warranty
    • Fits 2015-2017 Ford Mustang GT

    Review & Installation Video

    Review & Install Video

    Unprecedented 90% Increase in Power. The Whipple Stage 2 Supercharged Kit is a comprehensive, high-quality, industry-leading package that runs 10 to 11psi and instantly ramps up your Mustang GT’s power levels by as much as 90%. A huge, low-restriction front-feed twin-screw supercharger design, billet 132mm electronic throttle body, high-flow fuel injectors, air-to-water intercooler, and included OBDII flash tool make this the most powerful system you get that is emissions-legal in all fifty states.

    Tuning Required. Once the Whipple Supercharger Kit is fully installed, PCM tuning is needed to ensure that engine performance is optimal. Whipple includes everything needed to install a newly calibrated engine tune so you get the biggest, most-reliable performance gains possible.

    Top-Notch Build and Technology. The list of quality components included in the Whipple Supercharger Kit is almost as massive as the performance gains it produces. From the industry-leading 2.9L Whipple supercharger and giant 2L charge-cooling system to the billet 132mm Roval electronic throttle body and 72lb/hr fuel injectors, everything has been engineered to provide reliable, long-lasting power improvements.

    Complete Installation Kit. Whipple includes everything needed to install their ultra high-performance supercharger kit and reprogram your Mustang’s engine management to capture every last ounce of power. Installation takes one day and should be performed by a professional or someone with mechanical expertise. The included Flare software also allows for wheel/axle changes.

    One-Year Whipple Warranty. Whipple provides a limited one-year warranty on this Supercharger Kit.

    Application. The Whipple Stage 2 Supercharged Kit is engineered expressly for Ford Mustang GTs from 2015 to 2017.

    Fitment: 2015 2016 2017 Details

    MPN# WK-2620B-STG2

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Stage 2 Supercharger Kit
    • (1) OBDII Flash Tool
    • (1) Flash and Management Software
    • Installation Hardware
    Installation Info
    Will it fit my Mustang?

      Customer Photos (14) Submit Your Photo

      View All 14 Photos

        Questions & Answers (29)

        5 Top Rated Questions

        Whipple stage 2 has 245HP and whipple stage 1has 355HP. Why is the stage 2 more expensive but putting out less HP??

        • While checking with Whipple, we did discover that the Stage 1 supercharger will give your car 650 HP to your rear wheels. The stage 2 will give you 680 HP to the rear wheels.

        Helpful (18)

        Will this fit a coyote swapped 1999 mustang? If it cant, what supercharger will be able to fit?

        • This Whipple Stage 2 Supercharger Kit will work on the coyote swapped mustang as long as the 5.0L is from the 15-17 models. You may also need to get a larger hood to allow for clearance.

        Helpful (6)

        Is this the gen 3 top end (compressor) or the gen 2?

        • The Whipple Stage 2 Supercharger Kit is a Gen 2.

        Helpful (5)

        Will this work with an automatic transmission

        • The Stage 2 Whipple W175AX 2.9L Intercooled Supercharger Kit will work on both the automatic and manual transmission equipped on the 15'-17 Mustang GT.

        Helpful (4)

        The whipple 2.9L Supercharger includes spark plugs as well, correct?

        • The Whipple W175AX 2.9L Intercooled Supercharger Kit will include NGK Iridium spark plugs.

        Helpful (4)
        10 More Questions
        Will the spark plugs and fuel injectors work for E85, or would I have to buy others? 1 answer
        I got 17 Mustang GT. Is this smog legal in califohnia? 1 answer
        Does this kit come with a 160a thermostat 1 answer
        Will this fit 2017 GT350 if not. Can you explain why please ? 1 answer
        Will fit gt530 if not why ? 1 answer
        Does the whipple stage two kit include an upgraded engine oil pump? 1 answer
        Do you have to cut the block or not and I'll you Keep or stock hood tanks 1 answer
        Does this kit come with the brackets and fans for the cooler? My son bought one and the shop installing says the brackets and fans are not there. Thanks 1 answer
        will it fit under factory hood 1 answer

          Customer Reviews (8) Write a Review

          Overall Rating 4.9

          out of 5 stars

          Installation Time:Weekend

          Installation Cost:$1000+

          • Performance Gain 5 5
          • Fit 5 5

          • 5/5

            Installation Time: Weekend

            June 09, 2019


            It was a pretty easy install. But it’s really time consuming. Be really patient and read over the instruction a couple of time. Love the whipple on the car


            Year: 2017 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $1000+

            May 19, 2019

            Crazy power

            Absolutely insane power. I love this kit. I'm really happy with the easy install and how nicely everything comes packaged from Whipple. $1250 install.


            Year: 2016 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Weekend

            April 18, 2019

            Whipple 2.9 Supercharger Kit

            Very pleased with the quality and fit of product everything that you need to do complete install in the kit. All parts are high quality for a very nice install


            Year: 2015 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $1000+

            April 03, 2019

            650 RWHP out the Box

            It's genuinely a totally different car when you press down on that peddle. Drives like stock when cruising, but when you go, you goooooo. I ran 3 Dyno pulls post install and was at 635,640,and 650rwhp with the Whipple Tune. If you want instant power this is the way to go, just expect on buying some new tires to avoid spinning.


            Year: 2017 Submodel: GT

            Helpful (4)

          • 5/5

            December 04, 2018

            Whipple Supercharger

            This supercharger transformed my car, it has so much power , great product.


            Year: 2016 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Weekend

            November 05, 2018

            Beast to drive. Ow

            Best purchase I have done by far. Dont hesitate if your able to go the whipple route wont regret it. Instant power at your disposal.


            Year: 2017 Submodel: GT

            Helpful (4)

          • 4/5

            Installation Time: Shop Install

            Installation Cost: $1000+

            December 19, 2017

            Whipple stage 2 performance

            I got the kit that is described here and put it on my 2015 Mustang GT only to find that the tune that they provided for some reason has a dead spot in it I have spent countless dollars trying to figure out what the problem is why it has a sputter and when calling Whipple Factory itself it seems that nobody wants to help me solve my issue. At a price of $14,500 Canadian for the Whipple stage 2 going on a brand new car I was kind of let down so buyer beware.


            Year: 2015 Submodel: GT

            Helpful (100)

          • 5/5

            November 16, 2017

            Always satisfied

            I’m always pleased with American muscle I do t know a lot about cars but they are always there to help you!


            Year: 2017 Submodel: GT

            Helpful (12)

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