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KONI Sport Adjustable Front Strut (15-20 GT, EcoBoost, V6)

Item 390803
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      Review & Installation Video

      Hey, guys. Stephanie with, here with the KONI Sport Adjustable Front Strut for 2015 and up S550 Mustangs. The KONI Sport Adjustable Front Strut's gonna be for the S550 owner that's looking for more of a performance strut that'll work for the daily driver that sees the occasional track time. These struts are designed to improve overall handling performance under any demand and still maintain a good ride quality.These are adjustable struts and what that means is that you can adjust the rebound dampening to make it stiffer or softer. And these are on-car adjustable so you can do this without having to take things apart. Your adjustment point's gonna be right here at the top and the strut comes with a hardware pack that contains a knob, which is right here as well. Turning clockwise softens the dampening and counterclockwise stiffens it. The cool thing about this is if you have a street car that you wanna take to the track or the strip or autocross with, whatever it may be, you're gonna have one setting for street driving and another for your performance driving.Besides having adjustable dampening capabilities, these are an upgrade over the factory struts in other ways. The big difference between these struts and the factory struts is that these have a larger diameter piston in them. The larger piston will give better dampening and rebound when you compare it to the stock strut. This means better street performance. These still have the standard twin-tube gas pressure design and a steel body as well. Now as of right now, these are the only adjustable struts for the S550 that are currently available. And normally you'd swap out your struts if they're blown out or if you've lowered your car. In the case of the S550, with it still being so new, I'm gonna guess that you haven't killed your factory ones yet. And depending on how low you've lowered your car, you can get away with running your factory struts for a little while, in all honesty. If you've really lowered your car, though, upgrading to an adjustable strut like this is really gonna be beneficial to you. A strut with this setup is designed to work with lowered cars, so it's gonna ride better than the factory strut will, as long as you have it adjusted properly, that is even if your stock ones aren't blown up yet. This strut's more capable of working better with a lowering spring. It's better suited to work with the firmer spring rates and the lower ride height. The internals of the factory struts are not set up to take the abuse of a lowered ride height like these struts are.When it comes to price, these are sold individually but you can expect to spend under $200 per strut. You can love it or hate it that they're sold individually but I think it's nice, since you're not forced into buying a complete package. And since KONI does have adjustable shocks as well, you can upgrade the front or rear at different times or just one or the other, depending on what you want with your car. It leaves you more room to set your car up and spend your money how you want to, in my opinion.So the install here's not a difficult install. It's all straightforward and you won't need any tools out of the ordinary besides a spring compressor. You will need an assortment of different sockets and wrenches. And if you decide to tackle this yourself, you can expect to spend about an hour for each side minus playing around with the adjustment since that'll most likely take some time and be a trial-and-error type of thing. This is a one out of three wrenches on the difficulty meter. Having a lift is really gonna make things a lot easier here but you can complete the install with a jack and stands. There are a few nuts in the top of the strut tower that will need to be removed but you can leave one loose to hold the assembly into place while you prepare the rest. You can remove that one later after you've removed everything else. You have to disconnect the front sway bar and move the ABS line as well. The caliper does need to be moved out of the way, as well as the rotor if you want more room. Then there's just two nuts on the spindle and the bolts as well.Once the factory strut is out, you need to disassemble some of it and move some items over to the new strut, like the spring, the dust boot, the bump stop, and the mount too. After removing these items, the new strut's ready to go back in the car the same way you removed it. So reinstall the spindle with the strut, the rotor and the caliper, the end link on the sway bar, the ABS line, and the top nuts.Wrapping things up here, the KONI Sport Adjustable Front Strut is an adjustable direct bolt-on upgraded replacement. The adjustment allows you to change your rebound settings to help your car perform how you'd want it to and ride like you want it to but without sacrificing any features or ride quality. As always, I suggest you check out more online for yourself. And for all things Mustang, keep it right here at

      Product Information

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


      • KONI Sport Adjustable Front Strut
      • Improves Overall Handling Performance
      • Ideal Upgrade Replacement
      • Twin-Tube Gas Pressure Design
      • On Car Adjustable Rebound
      • Bright Yellow Finish
      • (1) Front Strut - Sold Individually
      • NOT Compatible with MagneRide Suspension
      • Fits 2015 to 2020 V6, EcoBoost and GT Mustangs


      Improves Handling Performance. Do you find the factory installed struts to be a little too soft during spirited driving excursions? Then you should upgrade your S550 Mustang's suspension with a set of Koni Sport Adjustable Front Struts. Koni Sport Struts will improve the overall handling performance of your Mustang while maintaining good ride quality. Sport Adjustable Struts are Koni's top-of-line performance struts that are ideal for daily driven Mustangs that see their fair share of track and autocross use.

      Adjustable Rebound Settings. Koni designed their Sport Struts to be on car adjustable allowing you to adjust rebound dampening with just a twist of a knob. Turn the knob clockwise and soften the dampening, turn it counter clockwise and stiffen the dampening. On car adjustability is great for fine tuning your suspension rebound to match your driving situation, whether its street, performance or track.

      High Quality Construction. Koni's Sport Series Front Struts are a performance upgrade that feature a steel bodied, gas pressurized twin tube design with a larger-diameter piston for optimum street performance. Koni Struts are completed in a classic yellow finish with the world-famous KONI logo for corrosion resistance and good looks.

      Application. This Koni Sport Adjustable Front Strut is designed for use on 2015 to 2020 Ford Mustangs, including the V6, EcoBoost and GT models. Does not fit Shelby GT350 or models equipped with MagneRide. Sold individually.

      Note: Coupon codes cannot be applied to this product.

      Fitment: 2015 2016 2017 2018 2019 2020 Details

      KONI 8741 1589Sport

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (21)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 21 customers

      Installation Time: Full Day

      Installation Cost: $250-$500

      • April 19, 2020

        5 2018 GT - James Installation Time: Shop Install Installation Cost: $100-$250

        A MUST HAVE!!!

        A MUST HAVE for all lowered S550 Mustangs. I have a 2018 Mustang GT PP, when I lowered my ride and it wore out the front factory struts extremely fast. I then purchased the adjustable koni sport struts and all I can say is WOW. The ride and the handling performance is night and day compared to the factory struts. Paired with Eibach lowering springs and BMR castor camber plates, what an awesome look and ride (Reminder: don't forget an alignment). I have ordered the rear adjustable shocks to complete the whole suspension upgrade, which I can't wait for them to arrive.

        Helpful (3)
      • November 27, 2019

        5 2015 GT - RichardI Installation Time: Shop Install Installation Cost: $100-$250

        Superior part

        Have had these on for a while, got em again as a replacement after an accident. No disappointment, adjustability is nice. Must have for lowering springs for ride quality and better handling

        Helpful (3)
      • August 17, 2019

        4 2015 GT - 2015GT Installation Time: Shop Install Installation Cost: $500-$1000

        worth it

        noticed a difference right away i can throw my car into a corner with confidence that ill have the handling i need. the shop did say they had to drill out holes to make them fit front and rear kong yellows were bought.

        Helpful (3)
      • April 07, 2019

        5 2015 EcoBoost - Vicr Installation Time: Shop Install Installation Cost: $1000+

        Koni Dampers and Eibach Sportlines

        I recently had the Koni's, Maximum Motorsports Caster Camber Plates and Eibach Sportlines installed and an alignment done and am very happy. Takes corners like it's on rails. Can't wait to track it.

        Helpful (5)
      • January 31, 2019

        5 2016 V6 - Andrew Installation Time: Afternoon

        Great Product!

        Great quality, pretty easy install, decent price. I was definitely able to notice the difference immediately after I completed the installation. Great buy, I would definitely recommend this product to anyone who’s looking for a more comfortable ride.

        Helpful (5)
      • January 03, 2019

        5 2015 EcoBoost - DevasinnaD Installation Time: Afternoon

        Koni Sport

        Before I purchased these I had lowered my ride with just the springs and I kept the stock struts. Eventually they went out so I brought these to replace them and when I say the ride is so much better it was practically brand new all over again

        Helpful (6)
      • December 28, 2018

        5 2017 GT - DenaM Installation Time: Full Day

        Front strut

        Very nice pulling all stock out putting in Joni strut in with sportline springs , can't wait to drive it to see the difference.

        Helpful (6)
      • December 27, 2018

        5 2015 GT - TroyS Installation Time: Afternoon


        Koni has always produced a Great Strut/Shock. Got them Dailed in now and what a Difference Compared to the Stock Struts. The Guy's at American Muscle helped make a Good Choice on this product.

        Helpful (5)
      • July 24, 2018

        5 2016 GT - PaulR Installation Time: Afternoon

        Koni Adjustable Fronts

        I lowered my 16 PP GT on Eibach/ CJ PP Springs. I figured the PP suspension was already an upgrade over stock suspension, however the stock shocks could not keep up with the new spring and did now have a smooth ride (bounce). I ordered these as I have heard good things about them and the reps were very helpful with information and WHAT A DIDFERENCE. The ability to adjust the ride to the perfect stiffness is great, no to mention these are designed to work specifically with lowering spring the car rides and handles better than from the factory. Now I feel the rear bounce/poor shock loads in the rear and will be ordering a set for the rear. If you have a lowered car or want great handling and want to upgrade or replace your shocks. BUY THESES.

        Helpful (7)
      • July 24, 2018

        5 2017 GT - NicholasP Installation Time: Less than 1 Hour


        Ride and feel overall is great smooth over most bumps also not to low that you grind on ground.

        Helpful (4)

      Questions & Answers (8 answers)

      5 Top Rated Questions

      Can these be used with factory springs on a 2015 GT base model??

      • The KONI Sport Adjustable Front Strut can be used with the factory equipped springs.

      Helpful (1)

      I current have Eibach pro lowering springs and went to get an alignment done, and it couldn't be aligned because the factory strut had to be grinded down. Will these struts allow for proper alignment?

      • The KONI Sport Adjustable Front Strut will help with the springs. However, if you do not have any caster camber plates (link below) you may want to look into these. These are made to help fix the geometry of the car once it's been lowered.

      Helpful (1)

      How thick is the body of this strut compared to a factory base GT strut? The tires I'm running have very little clearance from sidewall to strut, so I'm concerned any extra thickness in this strut will cause rubbing.

      • The KONI Sport Adjustable Front Strut will share similar dimensions to the OEM struts. You should see no noticeable increase in diameter.

      Helpful (1)

      If I buy the Koni struts from AM do I still get the Lifetime warranty they provide? Or would I have to go through them directly?

      • The warranty offered by KONI also applies to purchases made through American Muscle.

      Helpful (0)

      Hello, will these Struts work with the Eibach Sportline Lowering springs?

      • Yes, these struts are compatible with those Eibach springs.

      Helpful (0)
      Post Your Question
      3 More Questions
      Do these work on a 2015 convertible GT? I want to order the rears also, so if you could answer for those here too, it would save me posting another question. 1 answer
      Hello, Would I need to replace the strut mounts when installing koni struts and lowering springs? Thank you 1 answer
      I have a 2016 Mustang GT Performance Pack lowered with BMR Performance Springs. I want to make the ride of the car more comfortable and softer. Will these Koni struts make the ride more comfortable and softer than the stock performance pack ones? Please let me know what you think. Thanks 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Front Strut

      Tech Specs

      Strut Specifications
      Year:2015-2017Model:V6, EcoBoost, GT


      Will It Fit My Mustang

      • Bullitt - 19, 20
      • EcoBoost - 15, 16, 17, 18, 19, 20
      • GT - 15, 16, 17, 18, 19, 20
      • V6 - 15, 16, 17

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