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Eibach Pro-Kit Lowering Springs (15-18 GT w/o MagneRide)

Market Price $294.30 You Save 10% ($29.43)
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  • Item 384456
  • MPN# 35145.140

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    Features, Video & Details

    • 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”
    • Not Compatible on MagneRide Equipped Vehicles
    • Fits 2015-2018 GT Coupe and Convertible Mustangs
    • Clears Stock and Aftermarket Wheels & Tires.

    Review & Installation Video

    Review & Install Video

    Hey, guys, Stephanie with AmericanMuscle.com, 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 AmericanMuscle.com.

    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 2015-2018 GT Mustangs.

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

    Estimated Coupe Drop: Front - 1.1" Rear - 1.0"

    Estimated Convertible Drop: Front - 1.2" Rear - 1.1"
    Front Alignment: Rear Alignment:
    OE Camber = -0.8 deg (+/-0.8 deg)
    OE Caster = 7.2 deg (+/-0.8 deg)
    OE Toe = 0.0 deg (+/-0.2 deg)
    PRO-KIT Camber = -1.0 deg
    PRO-KIT Caster = 7.5 deg
    PRO-KIT Toe = 0.2 deg
    OE Camber = -1.2 (+/-0.8 deg)
    OE Toe = 0.1 deg. (+/-0.2 deg)
    PRO-KIT Camber = -1.4 deg
    PRO-KIT Toe = 0.2 deg

    Fitment: 2015 2016 2017 2018 Details

    What's in the Box
    • (2) Front Lowering Springs
    • (2) Rear Lowering Springs
    Installation Info
    Tech Specs
    Springs Specifications
    Spring Rate: Front: 200-314 lb/in.
    Rear: 800-914 lb/in.
    Usage: Street
    Year: 2015-2017 GT Model: Coupe
    Convertible
    Progressive or Standard: Progressive Estimated Drop:

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

    Will it fit my Mustang?

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    17 Questions / 4 Answers

    Ask a Question

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

    mike

    • 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.

      AshleyK

    Helpful (3)

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

    Jim

    • 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.

      KevinD92

    Helpful (1)

    Someone previously asked if using these springs to lower a performance pack (15-17) car will it have the same lowing effect. The answer was it will be .5 inches verses 1 inch. Is this the same for the 2018 performance pack?

    BRad

    Can I buy just the eibach pro kit only to lower my car. Or do I have to buy other equipment?

    Dee

    • No other components are required to install the Eibach Pro-Kit Lowering Springs, however we highly recommend new shocks and struts, as the stock units will have a reduced service life when used at a lowered ride height.

      AMRobD

    Helpful (0)

    I have a 2016 Mustang GT with the GT Performance pkg and the Pro-kit lowering springs. I notice that it does not feel very stable at higher speeds. it feels like it's floating and that concerns me. I heard one guy said he had to go with aftermarket shocks like the steeda non-adjustable ones, and that solved the problem. Is that true? I still have the stock shocks and struts on my GT.

    BobbyJ

    Can I use these spring to lowering ecoboost? I would like minimal drop .

    MartinB

    • It is not advisable to install the Eibach Pro-Kit Lowering Springs in an Ecoboost or V6 model, as the springs are set up for the weight of the GT, installed in the Ecoboost or V6, you will notice a higher ride height inn the front, which can effect handling.

      AMRobD

    Helpful (0)

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    Customer Reviews (62) Write a Review

    Overall Rating 4.9

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$100-$250

    • Handling Improvement 4.5 4.5
    • Ride Quality 4.62 4.6
    • Appearance 4.92 4.9
    • Bang For Your Buck 4.78 4.8



    • 5/5

      Installation Time: Shop Install

      May 23, 2018

      Nice!!!!

      The perfect amount of lowering. The car looks great and is down about an inch. It still rides very smooth.

      NicholasM

      Year: 2016 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      May 10, 2018

      Pro Kit Springs

      Installed these in the garage on jack-stands. Not an overly complicated job by any means, but having a big a** hammer to get the spline bolts out helps tremendously. Took about 4-5 hours by myself. The car (to me) rides better than it did on the PP springs, the stance is awesome, and handling has been improved (I still think the cars are under bared and need beefier sway bars) but body roll is all but gone and feels a lot tighter. Car now sits 27' in the front and 27.1' in the rear. I have a pretty steep driveway so the Sportlines were out of the question. Wouldn't change anything as far as my choice, can drive it anywhere without issues of scraping.

      Brett

      Year: 2016 Submodel: GT

      Helpful (1)

    • 4/5

      Installation Time: Afternoon

      May 01, 2018

      Lowering Springs by Eibach

      Car now have an agressive and lower stance. Handles better but not good in absorbing shocks when going over bumps in road.

      RonaldB

      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      April 29, 2018

      Awesome looking.

      It took us about 4 to 5 hrs,to install it and do an alignment. What a difference.Driving it,turning in corners it still has a bit of a lean.Definitly happy with the stance of it.

      TomD

      Year: 2015 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      April 23, 2018

      Pro kit lowering springs

      What a difference in looks and handling. Corners like it's on rails. Eliminated a lot of the wheel hop when launching.

      KeithG

      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      March 31, 2018

      Perfect stance

      Had these springs installed for my 15 mustang gt convertible with 15mm spacers. Car looks great and handling feels much better.

      JanneU

      Year: 2015 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      February 20, 2018

      Looks as it should

      These springs are great. They give you're car a great look and better feel that's for sure. I would have done them myself but unfortunately I don't have the patients for that. Hahaha! I would recommend wheel spacers as well.

      MatthewB

      Year: 2017 Submodel: GT

      Helpful (4)

    • 5/5

      February 08, 2018

      I Bach You Up Eibach... HaHaHa! That's lame...LOL

      Very nice spring! Stance is solid! Ride is awesome... better than stock because you actually feel lower believe it or not?! Center of gravity is better. Stock is totally like a 4x4... Sport Line springs may look a hint better to a very well trained eye (3/8 of an inch ) "seriously" but no rubbing.... no worries on ride quality at all! And it's a progressive spring w/o needing camber/ caster plates to save your shocks! I'm toying w/ going w/ the sport line... but the difference in looks is almost unrecognizable?! IDK?! I kind of just wish the front was a tad lower... but that's my OCD!

      CoyoteGT

      Year: 2015 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Less than 1 Hour

      January 17, 2018

      Pro kit stings are great

      Rides like stock on the highway but handles much better through the turns and lowers it just enough

      BradleyE

      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      November 25, 2017

      Perfect Stance!

      I put these springs on my Convertible with the factory 20"X9 wheels and it sits at perfect height! it lowers it a little over 1" for a Convertible and I did have issues with the tires rubbing at first because of the spacers. After I got it lined up correctly with STEEDA adjustable rear Toe links and sub frame alignment kit it doesn't rub at all in the rear. I rub a little in the front on big bumps but only because of the 1" spacers which I shouldn't have in the front nut love the look so don't mind rubbing a little once in awhile. Definitely glad I didn't get the Sportline with the more aggressive drop because it would be too much for 20" wheels with spacers!

      ChrisVegas777

      Year: 2016 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Full Day

      November 12, 2017

      Car sits like it should now.

      Nice springs. Looks great. I can’t tell any difference in ride quality compared to stock. I do notice that there is way less front end lift when I get on it. I have never installed springs before and was able to do it using YouTube. Took about 6 hours.

      MattB

      Year: 2015 Submodel: GT

      Helpful (6)

    • 5/5

      Installation Time: Afternoon

      October 13, 2017

      Great quality springs!

      Installed these on my 2015 gtpp and wow what a difference! They lowered the car a perfect amount in my opinion, not to much that is scrapes on everything but low enough that its noticable. I highly recommend these springs and honestly i feel my car rides better and handles bumps way better than it did with my stock performance package springs. You cant go wrong with Eibach when it comes to springs and if your looking for that classic muscle car rake these springs will do it!

      CZ

      Year: 2015 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $500-$1000

      October 12, 2017

      Sweet!

      Completely transformed look of car and handling is super smooth! Be prepared to have extra money for install.

      MarcelinoG

      Year: 2015 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      October 08, 2017

      Body roll eliminated!

      Easy install if you have access to a lift. The ride quality is unreal, responsive is an understatement when hitting hard turns. The little body roll the car did have is now gone.

      03gt

      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      October 03, 2017

      Eibach Pro-kit lowering springs

      Took me all morning it wasn’t to bad instructions on paper would of made it a bit easier lol maybe I’m asking for to much though it was straight forward

      AsirN

      Year: 2015 Submodel: GT

      Helpful (3)

    • 5/5

      September 24, 2017

      Fit great

      Gives an aggressive stance and helps with handling.

      MattC

      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      September 12, 2017

      Great value for your money!

      I definitely am happy with choice I made makes my car look way better and I can feel the difference when driving! Highly recommend these springs!

      JavierO

      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      September 04, 2017

      love the way its sitting now

      easy to install, nice improvement. love the way its sitting now. next buy is on the struts

      DominicD

      Year: 2016 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      August 31, 2017

      Eibach pro kit

      Ride feels the same as stock just less body roll. I wish the drop was a little more for looks but it's an improvement for a daily driver. I am happy with the purchase. Installation is straight forward but will take half a day if doing it on jack stands.

      JasonS

      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      August 11, 2017

      Really like!

      My '17 mustang GT with PP now looks much better and performs better. No issue with 25mm spacers on both front 255 and rear 275 tires. Riding quality is not any firmer than before just better cornering feeling and performance. Couldn't be happier.

      terry

      Year: 2017 Submodel: GT

      Helpful (3)

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