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

Item 384461
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      Review & Installation Video

      Hey, guys. Stephanie with here with the Eibach Sportline Lowering Springs for 2015 and up S550 GT Mustangs. The Eibach Sportline Lowering Springs are going to be a good option for the S550 GT owners out there who are looking for a spring that will give an aggressive drop and more aggressive handling. The spring is perfect for those S550 GT owners out there that are willing to sacrifice some of the nicer amenities of a softer ride quality in order to gain one of the biggest drops for the S550 from a lowering spring. Lowering springs have a big impact on the S550s. They can completely change the looks of the car without having to change a lot, and the Sportlines offer one of the largest drops for these cars.The Sportline springs are going to drop the GT about one and a half inches in the front and 1.3 inches in the rear. And like I said, it doesn't get much lower than this for the S550 from a spring, and this is an aggressive drop. The drop will change slightly depending on if the car is a coupe or convertible due to the weight differences between the models. But depending on your wheel and tire setup this drop is going to eliminate nearly all of the wheel gap that the GT has from the factory, and it's going to leave the car nearly tucking tire but sitting just above depending on what size wheels you have. Now a one-inch drop is pretty standard across the board for the S550 and I would say that one inch lower is pretty significant for these cars, and I mean significant in both looks and performance changes. So that means the one and a half inch drop that the Sportlines offer is the max drop from a spring that you're going to be able to find. This drop will lower the car's center of gravity enough to create more track like handling capabilities. These springs are really going to reduce squat during acceleration and reduce wheel hop as well. You're also looking at much less body roll during cornering and less nose dive during braking. Lowering the center of gravity this much on the S550 means that these springs are really going to change and tighten up the handling of these cars. Now, if you think one and a half inches is too much of a drop or you really wanna hang on to some of those softer ride quality characteristics, Eibach also makes a pro kit lowering spring. They drop the car about one inch all the way around and they will ride differently than the Sportline kit a little bit more comfortably. To really lay this out, I would say that the Sportline springs are more aggressive and better suited for some track use, or for those that are really looking for high performance and forceful looks. They're an all the way around more aggressive spring. The pro kit springs on the other hand are a great option for those that would like to lower the car and reduce wheel gap but that wanna keep a ride quality and street ability in the forefront of their mind as well.This doesn't mean that the Sportline kit won't work on a daily driven car. It'll work just fine. It really all comes down to your personal preference and what you want out of the springs. The Sportline springs, like the pro kit springs, are still a progressive spring. Progressive springs concentrate on providing balance at all times in order to improve handling. I will say though that since the drop here is more aggressive than most other springs, and keeping the spring rate in mind, that these springs are not the most ideal for drag racing. There are some better options available on the site for you guys that wanna hit the drag strip. Those other options will allow for more weight transfer and give you better results on the drag strip.Now, these springs do provide an aggressive drop but they are still going to work with both the factory wheels and the pre-configured wheel and tire kits that are on the site. These springs aren't going to make the car difficult to drive places but you will need to be a little bit more careful. They're going to be stiffer than the factory springs as well, so you will notice some more road noise and bumps. But I won't say that these give a bad ride quality at all. They're just not as soft as factory. I do wanna 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 necessarily required, but I will say that the one and a half inch drop is about the limit of where you would need a set of adjustable caster camber plates in order to get the alignment within spec. It's going to be close, so a set of caster camber plates wouldn't be a bad idea at all.At the end of the day, it never hurts to have caster camber plates. So if you've got the extra cash, I'd say go ahead. But in all reality, you will be able to get away without picking up a set. 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 minor drop in the grand scheme of lowering cars, the more forgiving progressive spring rate, and also the low mileage of the components. If your shocks and struts have 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 in the middle of the road as far as options go. 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 pro kit springs. If you're just looking to get your car lowered or you're concerned with ride quality, there are some other options on the site that cost a little less and will get you where you wanna be. On the other hand, if you are concerned with keeping a nicer ride quality and getting as low as possible, 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 this install, so I'd 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 to a few tools, including a spring compressor, so make sure you have that before you start the install.You are 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 the same way they came out and the install is the same for both sides.The rear is where things are a little bit different but nothing crazy here. Essentially the IRS subframe will be dropped along with the rear shock mount so you can slide the rear springs 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 Sportline Lowering Springs offer a spring with an aggressive drop and improvements in handling to make for a car that feels track ready. They will drop the car about one and a half inches all the way around and will leave the car sitting just above the wheels and tires. 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


      • Extreme Lowering & Aggressive Stance
      • Race Car Like Handling
      • Lower Center of Gravity
      • Progressive Spring Rate
      • Coupe Drop: Front - 1.5” Rear - 1.3”
      • Convertible Drop: Front - 1.6” Rear - 1.4”
      • Clears Stock and Aftermarket Wheels & Tires
      • Not Compatible on MagneRide Equipped Vehicles
      • Fits 2015-2020 GT Mustangs


      Better Handling. Give your 2015-2020 S550 GT the sports car type handling it deserves with an Eibach Sportline Spring Kit. This lowering spring kit lowers your Mustang's ride and center of gravity even more than the legendary Eibach Pro-Kit, for maximum improvement in acceleration, cornering, and braking performance. A set of Eibach Sportline springs are the no-compromise choice for the enthusiast that still needs a streetable car.

      Maximum Lowering. Eibach's Sportline Spring Kits are designed to deliver the lowest possible drop for a race car like look and handling, while still maintaining exceptional ride quality.

      Progressive Design. Eibach uses their proprietary progressive spring design to create the Sportline springs. The result is a spring that delivers the maximum lowering and aggressive stance a true enthusiast demands, without compromising safety or ride quality.

      Clears Stock and Aftermarket Wheels & Tires. These lowering springs were engineered to be compatible with your factory 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. These Eibach Sportline Lowering Springs are designed to fit both coupe and convertible 2015-2020 GT Mustangs. Sold as a set of four.

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

      Fitment: 2015 2016 2017 2018 2019 2020

      MPN# 4.14535

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (100+)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 100+ customers

      Installation Time: Full Day

      Installation Cost: $100-$250

      • April 04, 2020

        4 2016 GT - RyanM Installation Time: Afternoon

        Lower thank expected

        Put them on my '16 GT with 20 inch wheels, a little lower than expected especially in the back and a little high in the front for my liking. Which is weird. Still looks awesome though, way better than before. Just not optimal

        Helpful (0)
      • March 18, 2020

        5 2019 GT - Duran Installation Time: Afternoon

        Perfect stance

        Easy install. Ride quality and stance is good for daily driving.

        Helpful (0)
      • March 14, 2020

        5 2015 GT - Kells Installation Time: Afternoon

        Must have

        The springs lowered the car just right! Looks awesome, no more gap!

        Helpful (0)
      • February 18, 2020

        5 2018 GT - ADD Installation Time: Afternoon

        2018 lowering springs

        Sets a incredible stance for the s550...I have a staggering setup as well and still looks aggressive without all the scrapping.

        Helpful (0)
      • February 10, 2020

        5 2015 GT - PaulR Installation Time: Afternoon

        Eibach Sportline Lowering Springs Review

        Installed my self at my shop. Procedure was very easy with an extra pair of hands and a lift. The complete kit has what you need to slap the new springs in and roll it on the alignment rack. There was an immediate difference in ride quality, but it was well within what I expected. Taking corners at speed has improved and it, of course, looks really good. Paired with 265/35/R20 tires and 1 inch spacers on all 4 wheels, there was a tiny bit of rubbing that was fixed with centering the rear sub-frame. Well worth the price and more so on sale.

        Helpful (1)
      • February 08, 2020

        5 2018 GT - EdgarA Installation Time: Afternoon

        Just perfect!

        Feels and looks awesome, can't complain about it and for the price is just perfect in my opinion.

        Helpful (0)
      • January 29, 2020

        5 2015 GT - Darron757 Installation Time: Shop Install Installation Cost: $100-$250

        Must have!

        Got a shop to install them. They are amazing. Feel great, look great. 10/10!

        Helpful (0)
      • January 26, 2020

        4 2016 GT - MustangGT27 Installation Time: Afternoon

        Looks Great, Sounds Bad

        Like others have said here, the drop is awesome and it looks great! However going over speed bumps it sounds like the spring is squeaking and unsettling. I think this is due to the progressive spring and the coils being so close together cause any slight bump to make them touch together. It has a small rubber piece around one of the coils towards the top so it can compensate for that noise but it doesn't do work. The back makes very minor noise so it appears just to be the front but I would take this into consideration before buying.

        Helpful (5)
      • January 17, 2020

        5 2017 GT - SD Installation Time: Afternoon

        Perfect Kit!

        my 5th set of Eibach springs, as always I am very pleased. The ride height is just as described, excellent! good ride quality and much improved handling. spend the extra money and buy these springs!

        Helpful (0)
      • January 07, 2020

        2 2019 GT - Matalicgt19 Installation Time: Afternoon

        Great look! Sounds bad

        Sounds like the front end is gonna fall out of the car. I’m a machanic myself and torque everything down to spec and checked everything twice, but sounds like somethings loose, but does look good!

        Helpful (5)

      Questions & Answers (118 answers)

      5 Top Rated Questions

      Do the front tires rub while turning

      • The Eibach Sportline Lowering Spring Kit will not cause any rubbing with the tires as long as the tire isn't over a 285 in width.

      Helpful (14)

      I looked on EIBACH'S website and put in my model of car a 2017 s550 V6 coupe and these came up. Is that just something they have and you guys only have ones for the V8 or do these fit both. Im just really confused and i really want that 1.5 drop in the front.

      • The Eibach Sportline Lowering Spring Kit will physically fit the V6, however lowering amounts will be less, due to the lower weight of the V6 model, especially in the front.

      Helpful (11)

      I want to use the Eibach Sportline lowering springs on my mustang, my wheel setup will be 285/35 19x10 in front and 305/35 19x11 in rear. I was wondering if such a big drop will cause it to rub? If so, what other spring could I use to have a 'flush' set up.

      • With the Eibach Sportline Lowering Spring Kit, fitment of 285's and 305's would be very tight. Depending on wheel offset, you may experience rubbing, and need to roll the fender lips.

      Helpful (9)

      In the video on these springs are there spacers on the wheels? From the angles in the video it looks like the wheels sit very nice and almost flush with the fender. Would it be a bad idea to pair these springs with a spacer? I know someone asked about 1" already, but maybe something smaller? Would there be any rubbing or turning issues for stock GT/CS wheels? (Especially considering I live in NY- pothole central).

      • The Eibach Sportline Lowering Spring Kit which we have installed in our video will not have spacers on the wheels. These wheels will be a staggered aftermarket wheel which allow for the wheels to sit flush. Adding spacers to the rear wheels will absolutely provide this look to your stock wheels.

      Helpful (5)

      What struts and shocks would you recommend pairing with these springs. Id rather do it all at once.

      • The Koni Sport Adjustable Front Struts, item # 390803,, and Koni Sport Adjustable Rear Shocks, item # 390804, be a great match for the Eibach Sportline Lowering Spring Kit. You can adjust the rebound dampening on the Koni's depending on the type of driving you are doing, from maximum comfort to maximum handling.

      Helpful (4)
      10 More Questions
      I have 295/40/20s on my rears will this cause any rubbing or should I go with a less aggressive lowering option? 1 answer
      On a 2015 gt pp , how much drop can I expect, I think pp is little lower than a gt , thanks for replying 1 answer
      I noticed that some people put these on their v6/ecoboost in the pictures. Will these work on my ecoboost? 1 answer
      For the rear springs do the tighter coils go on the top or the bottom 0 answer
      How do I know if my mustang comes with MagneRide or not ? 0 answer
      What is the biggest tire u can put In the front and rear with these on a 17 gt non pp?? 1 answer
      So I just installed these and I took my car to get an alignment and there saying I need dr alignment bolts or plates for the rear cant find anything on the website 0 answer
      Any issues with speed bumps? My work place has like 3 speed bumps just to get to the main parking area 1 answer
      I just installed these a couple months ago I’m just still having a issue on the spring creaking from the front end I don’t know if this is how it’s supposed to sound? 0 answer
      To clarify, these will not fit a 2019 GT PP1? 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: 217-331 lb/in.
      Rear: 879-994 lb/in.
      Year:2015-2017 GTModel:Coupe
      Progressive or Standard:ProgressiveEstimated Drop:

      1.5"F / 1.3" R
      1.6" F / 1.4" R

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