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

Market Price $9,834.00 You Save 17% ($1,639.00)
Our Price

$8,195.00 (kit)

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  • Item 393626

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Ship to: Ashburn - 20149
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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?

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    Questions & Answers (23)

    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 (9)

    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 (4)

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

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

    Helpful (4)

    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 (2)

    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 (2)
    Post Your Question
    10 More Questions
    Two questions: 1 - is this still a Gen 2 upper (compressor) or Gen 3? 2 - I have aftermarket headers, and prefer to run flex fuel/E85, will the Whipple tune / software be sufficient, or will I need a custom tune? 0 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 0 answer
    will it fit under factory hood 1 answer
    Is this the gen 3 whipple? 1 answer
    What are the recommended parts that should be changed? I know it’s best to swap the factory clutch but what else would increase the longevity of the car? Also what other parts would increase rwhp? 1 answer
    Does the injectors that come with this kit be compatible with an E85 tune and fuel? 1 answer
    I notice on one question that was asked about colors. You stated that the stage 2 came only in black. On their website they offer in the same colors. Do you know if American Muscle will have the colors? 1 answer
    Is there a way to get the stage 2 kit with a color finish? 1 answer
    Is a fuel pump voltage booster required with the stage 2 kit? 1 answer
    I got 17 Mustang GT. Is this smog legal in califohnia? 1 answer

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    Customer Reviews (4) Write a Review

    Overall Rating 4.8

    out of 5 stars

    Installation Time:Weekend

    Installation Cost:$1000+

    • Performance Gain 5 5
    • Fit 5 5

    • 5/5

      December 04, 2018

      Whipple Supercharger

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


      Year: 2016 Submodel: GT

      Helpful (2)

    • 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 (2)

    • 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 (86)

    • 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 (9)

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