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

Item 393626
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Market Price $9,834.00 You Save 14% ($1,389.00)
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$8,445.00 (kit)

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      Review & Installation Video

      Product Information

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


      • 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


      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

      Whipple WK-2620B-STG2

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (8)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 8 customers

      Installation Time: Weekend

      Installation Cost: $1000+

      • June 09, 2019

        5 2017 GT - FelixN Installation Time: Weekend


        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

        Helpful (9)
      • May 19, 2019

        5 2016 GT - Jason00000 Installation Time: Shop Install Installation Cost: $1000+

        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.

        Helpful (10)
      • April 18, 2019

        5 2015 GT - JIML Installation Time: Weekend

        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

        Helpful (6)
      • April 03, 2019

        5 2017 GT - Jose Installation Time: Shop Install Installation Cost: $1000+

        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.

        Helpful (12)
      • December 04, 2018

        5 2016 GT - Cobrasnake

        Whipple Supercharger

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

        Helpful (7)
      • November 05, 2018

        5 2017 GT - Eddie Installation Time: Weekend

        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.

        Helpful (7)
      • December 19, 2017

        4 2015 GT - kevink Installation Time: Shop Install Installation Cost: $1000+

        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.

        Helpful (114)
      • November 16, 2017

        5 2017 GT - MarissaD

        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!

        Helpful (19)

      Questions & Answers (32 answers)

      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 (24)

      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 (7)

      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 (5)

      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)
      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
      Will the sway bar from the performance package still fit over the top of the whipple supercharger? 1 answer
      While the whipple2 delivers 680 RWP doesn't the Roush phase2 deliver the same? 0 answer
      What size pulley comes with this kit? 0 answer
      Can I use 91? 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

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Stage 2 Supercharger Kit
      • (1) OBDII Flash Tool
      • (1) Flash and Management Software
      • Installation Hardware

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