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Eibach Pro-Kit Lowering Springs (15-20 GT w/o MagneRide)

Item 384456
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      Review & Installation Video

      Hey, guys, Stephanie with, here with the Eibach Pro-Kit Lowering Springs for 2015 and up S550 GT Mustangs. The Eibach Pro-Kit lowering springs are going to be a good option for the S550 GT owners out there who are looking for a lowering spring that's going to improve the looks of the GT, but also still has a comfortable ride quality as well. And for those of you that don't mind spending a few dollars more for these qualities. Lowering springs have a big impact on the S550, as they can completely change the looks of the car, but at the same time, a lowering spring isn't always just about lowering a car. Any lowering spring can lower the car, but the Eibach Pro-Kit is designed with handling in mind as well, which makes them a great choice for those that are concerned with improving handling, and keeping as comfortable of a ride quality as possible.These are progressive-rate springs, which concentrate on providing balance at all times, in order to improve handling, and they're going to lower the car just over one inch in the front, and one inch in the rear. The drop will change slightly, depending on if the car is a coupe or convertible, due to the weight differences between the models. This drop's going to eliminate a lot of the wheel gap that the GT has from factory, and it's doing to leave the car sitting just above the tires. A one inch drop is pretty standard across the board for the S550, and like I said, a one inch drop is pretty significant for these cars. But I wouldn't say that this is a huge drop, so if you're looking for more drop, Eibach does have the Sportline springs that will drop a half inch more, but they will ride differently than the Pro-Kit. They're just a little bit more aggressive spring all the way around. Now I said that the one inch drop with the Pro-Kit is significant for the S550, and I mean significant in both looks and performance changes. This drop will lower the car's center of gravity enough to have handling benefits and some traction benefits. Squat is reduced during acceleration, and so is some of the wheel hop that the car has. The springs are also going to help with body roll in the corners, and nose dive during braking. All of this means that these springs are generally speaking going to tighten up and improve handling in nearly all aspects.The Pro-Kit's also a great option for the daily drivers out there that aren't going to drop the car so low that it's difficult to drive places, but they are going to drop it enough to improve looks and handling. They're also that progressive spring rate that I mentioned earlier, so they aren't going to have a harsh ride quality, and that's why I consider these one of the best springs for the dailies. I would consider the ride quality nearly equal to the factory ride quality, slightly stiffer, but really nothing to complain about, and I don't have anything negative to say about it. I do want to say that a lot of times when you're shopping for lowering springs, you're also shopping for things like adjustable caster camber plates, and a new set of both shocks and struts. In this case, I wouldn't say that caster camber plates are required. The drop is only just over one inch, so in all reality, the ability to get the alignment within spec is still there with the small drop. If these were the Sportline springs that were dropping you one and a half inches, I might suggest caster camber plates. It never hurts to have a set of adjustable plates though, so if you've got the extra cash, I'd say go ahead. They're just not required in this case.As far as shocks and struts, this goes back to the drop, too. I would say that you can get away with the factory shocks and struts in this case, due to the relatively drop, the more forgiving progressive spring rate, and also the low mileage of the components. If your shocks and struts had a ton of miles on them, I would replace them. But in this case, since we're talking about relatively new cars here, I don't think it's necessary. When it comes to price, these springs are going to be one of the middle of the road options. They're not the most expensive, but they're not the least expensive, either. They cost just under $250, which is the same price as the Sportline springs. If you're just looking to get your car lower, and you're not concerned with ride quality, there are some on the site that cost a little less, and will get you where you need to be. On the other hand, if you are concerned with keeping a nicer ride quality, then you're shopping in the right place.So the install here is going to take about four hours, and I'm going to call it a two out of three wrenches on the scale. You will need some knowledge to complete the install, so I would recommend having a knowledgeable helping hand, or taking this to a shop for the install, especially since it's always a good idea to get an alignment after the install anyway. This install can be done on jack stands if you don't have access to a lift, but as usual, a lift would be your best bet here. Going to need a few tools, including a spring compressor, so make sure you have that before you start the install. Going to need to get down to the spring and strut assembly, so everything like the wheels, brakes, ABS lines, will need to be moved out of the way, so you can pull the assemblies out of the car. The spring compressor will help you remove the spring from the strut and install the new front springs, which are compressed and installed the same way. The strut assemblies go back in the same way they came out, and the install is the same for both sides.The rear is where things are a little different, but nothing crazy here. Essentially, the IRS subframe will be dropped, along with the rear shock mount, so you can slide the rear spring out. Just like the front, the rear springs install the same way they're uninstalled, and no surprises here. The new bump stops slide onto the shock, followed by the factory dust boot. The new springs can be installed, and the IRS subframe can be bolted back up, and that's about all it's going to take. Like I mentioned earlier, a fresh alignment after the install isn't a bad idea.Wrapping things up here, the Eibach Pro-Kit lowering springs offer a balance between a spring that will leave the car sitting about an inch lower, and with a comfortable ride quality. The springs give what I'd consider an aggressive look to the S550 that is balanced, and will work to improve handling as well. The springs are not difficult to install, they're in the middle of the pack as far as pricing goes, and you can check them out more online right here at

      Product Information

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


      • Aggressive Stance
      • Improves Handling
      • Lowers Center of Gravity
      • Progressive Spring Rate
      • Coupe Drop: Front - 1.1” Rear - 1.0”
      • Convertible Drop: Front - 1.2” Rear - 1.1”
      • Clears Stock and Aftermarket Wheels & Tires.
      • Not Compatible on MagneRide Equipped Vehicles
      • Fits 2015-2020 GT Mustangs


      Improves Handling. These Eibach Pro-Kit Progressive Rate Springs will lower your S550 GT Mustang's center of gravity, reducing squat during acceleration, body roll in the corners and excessive nose-dive under hard braking. A set of Eibach Pro-Kit Lowering Springs are great for daily driving, street and even track use.

      Improves Appearance. Not only does a set of Eibach Pro-Kit Springs improve the handling of your S550 GT, but it also improves it's over all appearance by lowering the ride height to get rid of that lifted 4x4 look that they roll out of the factory with for a more aggressive stance.

      Progressive Design. Eibach's proprietary progressive spring design provides the ultimate balance to deliver aggressive good looks and high performance handling, without ever compromising safety or ride quality.

      Clears Stock and Aftermarket Wheels & Tires. These lowering springs were engineered to be compatible with your stock size wheels and tires, as well as AmericanMuscle's pre-configured wheel and tire combo kits (specific to your generation), to assure proper clearance with no rubbing issues.

      Application. This set of four Eibach Pro-Kit Springs are designed to fit both coupe and convertible 2015-2020 GT Mustangs.

      Technical Note.
      The Springs are not compatible on vehicles equipped with the MagneRide Suspension.

      Fitment: 2015 2016 2017 2018 2019 2020 Details

      MPN# 35145.140

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (97)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 97 customers

      Installation Time: Full Day

      Installation Cost: $100-$250

      • February 21, 2020

        5 2015 GT - ChrisJ Installation Time: Shop Install Installation Cost: $250-$500

        Eiibach pro

        Awesome product, the stance is the best And the ride feels stock, except when you get on it! Definitely more grip and better handling. Absolutely recommend this product!

        Helpful (0)
      • February 16, 2020

        4 2017 GT - MarMar Installation Time: Afternoon

        great springs

        Easy to install, great ride and look. Just wish the front dropped a bit more. Another 0.2" would make a big difference.

        Helpful (0)
      • December 06, 2019

        5 2017 GT - MarkL Installation Time: Afternoon

        Just what I was looking for!

        Dropped my convertible just over an inch. Although the ride is a little stiffer it's still very comfortable. The handling and lack of nose dive on braking make these springs perfect for what I was looking for.

        Helpful (1)
      • October 24, 2019

        5 2019 GT - Kenobi Installation Time: Afternoon


        Obvious Camber is not too bad. Looks good. Ford REALLY should take a note regarding ride height and tire to fender gap.

        Helpful (0)
      • October 16, 2019

        5 2017 GT - JohnW Installation Time: Afternoon

        Perfect for my daily!

        Nice ride with excellent handling. Looks great as well.

        Helpful (0)
      • October 13, 2019

        5 2019 GT - RTW1950 Installation Time: Full Day

        Nice ride and Appearence

        Like end result, Is a 3 wrench install, but can be done In drive way with/on jack stands. Did take about 6 hours.

        Helpful (0)
      • July 24, 2019

        4 2016 GT - BillsS

        Great mod for the morning

        Before you start upping your horse power get more out of what you already have. In just a few hours I was able to install the springs and noticed a difference right away. No more tire hope on launch!

        Helpful (0)
      • May 06, 2019

        5 2018 GT - Luckeyj Installation Time: Afternoon

        Lowering springs

        Just the right amount of low. The car looks better and I can still make it up my steep driveway!

        Helpful (0)
      • April 19, 2019

        5 2017 GT - BigRod Installation Time: Afternoon

        Great upgrade!!

        Just as advertised except the front is a bit lower than expected.

        Helpful (0)
      • March 20, 2019

        4 2018 GT - Eric Installation Time: Afternoon


        The springs are nice fit very well and love the color very go ride quality I love the new ride height of my car

        Helpful (1)

      Questions & Answers (27 answers)

      5 Top Rated Questions

      Will these springs lower a Performance package GT the same they would a normal GT?

      • The Eibach Pro-Kit Lowering Springs (15-17 GT) will lower a GT with the Performance Package. The Performance Pack gives the car around a .5" drop while these springs give the car 1.1" drop in the front and a 1.0" drop in the rear. So, you will be seeing a .5" drop since you are already slightly lower than stock.

      Helpful (10)

      will the Eibach pro-kit lowering springs work with my 1" wheel spacers on the 255/40r19 wheels? Thank you

      • The Eibach Pro-Kit springs will work with the 1" wheel spacers ona 255/40R19 as we can confirm fitment of those tires up to a 2" drop.

      Helpful (2)

      Hey, I have 275/35/20 in the front and 305/35/20 in the back, will these springs be good for my 2018 mustang gt? Any rubbings ?

      • Unfortunately, you may see slight rubbing with the 305s with this lowering spring kit. However, with the 275s you shouldn't see any rubbing.

      Helpful (1)

      I have a 2015 GT with the Performance Pack with 305/35/20 tires on 10x20 super snake wheels on the rear, 255/35/20's up front on 9x20's. Will I have any tire rub issues in the rear with this lowering kit ? And how will the car handle and drive compared to the P.P. suspension the car came with ? Thanks, Steve

      • The addition of these Eibach Pro-Kit Lowering Springs will allow for better handling when compared to your current suspension. Your wheels and tires will also indeed fit once these springs are installed.

      Helpful (1)

      It’s not clear whether these fit a 2019 GT with Performance Pack 1. Q and A of the Sportlines say they are not compatible with the 2019 GT with the PP 1.

      10 More Questions
      I have HRE FF04 wheels going on 19GT with the performance pack. Will 275/35/20 up front and 295/35/20 in the rear rub? 0 answer
      I was under the impression that the 1 inch drop wouldn't really effect the stock equipment to that much of a degree. Or is it a waste of time to buy springs and to go ahead and spend a $1000.00 more and buy a whole new suspension. The pro-kit was because I DID NOT want to buy new shocks and struts. Thanks..... 1 answer
      Hello, I’m purchasing the MMD zeven 20x8.5 with 255/35R20 up front and 20x10.5 with 305/35R20 MT Street comp tires, will I have any rubbing issues with this kit? 1 answer
      I have a 2017 Mustang gt I have 1 inch wheel spacers and I want to install the ehbach pro kit will there be any rubbing with 20 inch tires 265/35r20? 1 answer
      Hi, i have 265/35/20 front and 305/35/20 rear, my wheels are AMR, will this kit fit my wheels without rubbing issues? 1 answer
      Would these fit a 20x9 35mm on a 255/35/20 front. 20x10.5 38mm on 295/35/20 rear? Would I run into any rubbing issues? Also would camber plates be needed for this setup? 1 answer
      Looking at the Eiback Pro Kit lowering kit and the SR performance springs for my 18GT. They seem very similair. Trying to decide which one to chose. Which one you recommend? 1 answer
      Hi, does this Eibach pro-kit come with new bump-stops or other needed Hardware or only the springs ? thx 1 answer
      after installing this spring kit, there were some squeezing sound while driving at low speed, or making turns. Is there any way to get rid of it? Or did I miss anything? 1 answer
      Would these fit with 305/30r20 on a 10.5 in the rear?? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Front Lowering Springs
      • (2) Rear Lowering Springs

      Tech Specs

      Springs Specifications
      Spring Rate:Front: 200-314 lb/in.
      Rear: 800-914 lb/in.
      Year:2015-2017 GTModel:Coupe
      Progressive or Standard:ProgressiveEstimated Drop:

      1.1"F / 1.0" R
      1.2"F / 1.1" R

      Will It Fit My Mustang

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

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