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

Market Price $294.30 You Save 10% ($29.43)
Our Price

$264.87

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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 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?
  • GT - 15, 16, 17

People Who Bought This Item Also Bought

Most Helpful Reviews

5/5
Stance

Took 3 hours in the driveway with a jack stands. Didn't have to take the rotors off. Install went easier than I thought it would. The pro kit worked perfect with my 1" spacers on 20" wheels. Definitely ...

Read More
Helpful (4)

5/5
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 ...

Read More
Helpful (3)

Overall Rating 4.9 out of 5 stars
Read All 53 Reviews

Customer Photos (55) Submit Your Photo

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13 Questions / 6 Answers

Ask a Question

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)

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 (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

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.

    JeffAM

Helpful (0)

Hello, will this cause issues with the independent rear suspension?

Michael

  • No, The Eibach Pro-Kit Lowering Springs for the 15-17 GT Mustang will be specifically designed to work with the IRS and S550 chassis. You will not have any issues using these springs with the IRS rear.

    AMCoal

Helpful (0)

I have the American Muscle PP style rims 275/35/20 in the front and 315/35/20 in the back will these springs work for tires that size?

BobtheBuilder

  • With your tire selection that is in the range around 27.6 inches tall in the front and 28.7 inches tall in the rear you may run into some rubbing issues with the Eibach Pro-Kit Lowering Springs (15-17 GT).

    Pat K

Helpful (0)

What Offset is Recommended for 20X10 rims or for 19x9.5 or 19x10 rims. Looking at a couple different rims and was wondering what is the recommended wheel sizes.

ShawnP

  • Any wheel we have advertised for a 15+ will fit your application as we have already done that homework for you. Based on the wheels we sell: 20x10: +48mm 19x10: +48mm 19x9.5: +33mm

    JeffAM

Helpful (0)

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Customer Reviews (53) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Full Day

Installation Cost:$100-$250

  • Handling Improvement 4.609756 4.6
  • Ride Quality 4.634146 4.6
  • Appearance 4.926829 4.9
  • Bang For Your Buck 4.853659 4.9



  • 5/5

    Installation Time: Afternoon

    October 29, 2016

    Stance

    Took 3 hours in the driveway with a jack stands. Didn't have to take the rotors off. Install went easier than I thought it would. The pro kit worked perfect with my 1" spacers on 20" wheels. Definitely stiffened up the body roll but doesn't feel any harsher on the highway.

    JoeQ

    Year: 2015 Submodel: GT

    Helpful (4)

  • 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 (3)

  • 5/5

    Installation Time: Afternoon

    January 23, 2017

    Eibach Pri-kit

    Great product,better ride, car handles better and looks great.

    Ricardo

    Year: 2017 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    August 27, 2015

    Looks so much better

    The stock springs on a 2015 Mustang GT are fine but there was an awkward gap in the wheel wells. I could not be more please! I'm so glad I didn't go for the lower springs because I'd probably not be able to get in and out of my driveway these are perfect!

    Oakley

    Year: 2015 Submodel: GT

    Helpful (3)

  • 1/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    May 14, 2015

    **BEWARE**Look good but be prepared for progressively worse creaking and springing noises

    I bought these springs about a month ago for my 2015 Mustang GT. At first all seemed great they made the car looks great. Then they slowly started making creaking sounds from the rear, then the front, then springing sounds started (all of this while moving slowly). Then it got worse and now every time I turn the wheel while moving I hear a bumping/creaking and a springing sound. I had these installed by a professional tech, I also had Ford look at this when I started getting the sound and they said the install looks perfect, they greased all the bushings but that did nothing. Now between buying the springs, getting them installed, getting an alignment and having it looked at for this issue… I have spent almost $800 and my brand new 2015 Mustang sounds like it’s 40 years old when I turn the wheel or even hit the slightest bump at 2-5mph. I called Eibach, opened a case with them. They are now claiming “it’s probably just the bump stops” and they “don’t warranty noises caused by their springs”. DO NOT BUY!! Unless you want your new Mustang to sound like an old creaking and springing beat up Pontiac Grand Am. Your call.

    Unknown923

    Year: 2015 Submodel: GT Buffalo, NY

    Helpful (3)

  • 5/5

    Installation Time: Shop Install

    April 01, 2017

    Makes a big difference in handling

    Had my local speed shop install these on my 2017 gt performance pack. Had car aligned. First impression was that the car looked slightly lower than stock. After driving the car the improvement in ride and handling were obvious. The car corners much flatter. The ride is less harsh and bouncy. Much more fun and confidence inspiring around curves. Much less body lean. I highly recommend these. No problem with speed bumps.

    JeffreyS

    Year: 2017 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    November 15, 2016

    Love it

    Love this lowering Springs. My car looks super aggressive compared to stock. Definitely recommend it for anyone looking to lower there car and still have a comfortable ride.

    Dilverl53

    Year: 2016 Submodel: GT

    Helpful (2)

  • 5/5

    August 15, 2016

    Totally worth it

    Just installed these during the weekend, looks better drives better worth the 5 stars pefect drop

    Dongela

    Year: 2015 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    October 09, 2015

    Looks great

    Really got the car down and fills the gap. Looks great with my 20" wheels. Can't really tell a difference in ride quality.

    Gasman

    Year: 2015 Submodel: GT Arlington, TX

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    March 23, 2015

    Perfect Stance

    This Eibach Pro Kit is a must have for any 2015 GT owner!! The stock 2015 ride height is much better than the previous generation Mustangs and especially if you have the Performance Package however it still sits really high for a sports car. The 15s have a much wider body so it needs to sit lower to give it a more aggressive look. The Eibach Pro Kit is the perfect solution!! It provides about a 1.2 inch drop all the way around and the difference in appearance is almost night and day!! It fills in that god awful wheel gap and really levels it out. The Pro Kit is not an extreme drop so replacing your stock shocks and struts are not necessary. I make it over speed bumps perfectly fine so you really don't have to adjust your driving very much just be careful pulling up to parking spots since now the front bumper is lower and it probably wont clear the concrete stoppers. Cornering is much improved and there is little to no nose dive. Comfort feels about the same, its a little stiffer but nothing dramatic. I took it to a local Mustang Performance shop and they did the install for $200. It took them a little longer then expected but that's only because it was the first 15 they had done and its a little more complicated because of the new IRS. DO NOT take it to the dealer for installation. I called to get a price quote and they wanted $800 for installation alone!!! I don't know where they where getting that price from but it seems like they where trying to rip someone off!! They claimed it was due to the new IRS but any mechanic should know how to do something this simple. Overall this kit is a perfect match for your GT. It should be at the top of your modification list if not the first modification. Great product and as always, great customer service from AM!!

    MustangGT10

    Year: 2015 Submodel: GT ATHENS, GA

    Helpful (2)

  • 5/5

    December 12, 2014

    Eibach Pro-Kit lowering springs

    Perfect drop on my 2015 GT. Not to low and fills the gaps on all four corners. Ride quality is very good, I gave it 4 out of 5 stars only because it is a bit stiffer than the stock ride which was next to perfect for a daily driver in my opinion. Well worth it though! Highly recommended.

    1g4my2g

    Year: 2015 Submodel: GT San Diego, CA, USA

    Helpful (2)

  • 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 (1)

  • 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 (1)

  • 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 (1)

  • 5/5

    Installation Time: Afternoon

    March 24, 2017

    Just right

    Good for daily driving, better than stock (non p.p.) springs. Took about 4 hrs w jack and stands

    ChristianK

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    February 17, 2017

    Car sets PERFECT!

    I recently purchased a new '17 GT and knew the first I had to do was lower it. I'm 56 years young so I wanted a little more conservative drop. I decided on the Eibach's due to their reputation of being a quality product and still providing a ride quality VERY similar to stock. I am not disappointed! The car looks fantastic and the difference in ride quality is so minimal it's not worth mentioning. VERY happy with my purchase and would recommend the springs to anyone looking to drop their Mustang. It's been years since the last time I played with coil springs but had decided to do the install myself. But, I found an avid Mustang guy nearby that several of the "club" guys use for installs and advice and he was very reasonable; so I let him do it. Sometimes it's nice just to write a check and let an experienced guy do the work.

    Frank

    Year: 2017 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    November 03, 2016

    The car looks KILLER!

    I had Performance Automotive install the springs so really can't give any install info.Took them 3 hours to put the springs in and then checked the alignment....PERFECT. Handling is incredible and looks KILLER! Can still make it over the speed bumps. WOOOA HORSEY

    Kimber45

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    October 12, 2016

    Eibach pro kit

    The springs are excellent. I think it actually improved the ride quality of my 2015 Mustang GT. A lot of the bounciness that was in the car is taken away in the car rides so much better

    Gt40fiveo

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    October 05, 2016

    Great look!

    Put on my 2016 GT..gave the perfect stance I was looking for and tightened up the ride as well. Completely satisfied!

    NCsleeper50

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    August 23, 2016

    Worth every penny upgrade

    With the right tools on-hand, it was quite an easy installation. I have a GT PP. The fronts took about 2 hours and the rears 1 hr. The car lowered about 1 inch both front and back. The ride feels almost as PP stock with must less dive and bounce. Cornering is much tighter. Quite an improvement on looks and performance.

    jolen1aub

    Year: 2016 Submodel: GT

    Helpful (1)

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