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Eibach Sportline Lowering Spring Kit (15-17 GT)

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

$264.87

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  • Item 384461
  • MPN# 4.14535

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Features, Videos & Details

  • 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”
  • Fits 2015-2017 Coupe and Convertible Mustangs
  • Clears Stock and Aftermarket Wheels & Tires.

Review & Installation Video

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

Better Handling. Give your 2015-2017 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 2015-2017 GT Mustangs. Sold as a set of four.

Estimated Coupe Drop: Front - 1.5” Rear - 1.3”

Estimated Convertible Drop: Front - 1.6” Rear - 1.4”

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: 217-331 lb/in.
Rear: 879-994 lb/in.
Usage: Street/Track
Year: 2015-2017 GT Model: Coupe
Convertible
Progressive or Standard: Progressive Estimated Drop:

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

Will it fit my Mustang?
  • GT - 15, 16, 17

People Who Bought This Item Also Bought

Most Helpful Reviews

5/5
Car sits right

This drop makes a huge difference in appearance and performance. After install, check to make sure the rear is lined up side to side,as mine was off by 1/4 each side. Steeda subframe alignment kit fixed ...

Read More
Helpful (1)

5/5
Eibach sportline springs=perfect drop

Installed myself on jack stands with just hand tools no power tools rear took about 4 hours with pausing for rainy weather front took about 3 hours per side not hard just would be alot quicker with an ...

Read More
Helpful (1)

Overall Rating 4.9 out of 5 stars
Read All 100+ Reviews

Customer Photos (100+) Submit Your Photo

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36 Questions / 5 Answers

Ask a Question

I noticed that some people put these on their v6/ecoboost in the pictures. Will these work on my ecoboost?

Devin530

  • The Ecoboost is lighter than the GT, so the estimated drop listed will be off but a couple tenths of an inch or so.

    JeffAM

Helpful (1)

How is the bump stop supposed to be installed and oriented with the dust boot? Instructions in the box are not detailed. Should the bump stop be completely inside of the dust boot or should only the conical half of it be inside of the boot with the flat cylindrical end of the bump stop extending through the top of the boot? Thanks in advance!

ChrisM

I bought these springs for my 2010 gt. Would they fit and lower my car to about the same ride hight now on a 2017 gt? Or should I just stop being a cheapo and buy new ones.?

Talont

  • The Eibach Sportline Lowering Spring Kit for a 2010 would not work on the 2015-2017, as in 2015, the suspension was completely reworked. You would need the correct Eibach Sportline Lowering Spring Kit for your year range.

    Rob D

Helpful (0)

Will these springs clear 20" wheels?

JPer

  • Generally, 20" wheels would work with this drop, however this would depend on your offset and back spacing of your wheel.

    Ricky36

Helpful (0)

Clunking noises coming from front driver and passanger, usually when I hit corners or bumps? Idk whats wrong or to do.

Gabriel

  • We would recommend taking it to a professional shop for diagnosis, there may be an issue with something contacting the suspension during any sort of suspension travel.

    AMjordan

Helpful (0)

There is weird cracking noises coming from the front after installing springs is that norrmal. Sounds like thuding, cracking idk. I may have put the bumber stops upside down but i think everything else is fine, would that cause a problem having the ruber bumber stops the wrong way, or could it be something else, if so what?

Gabriel

  • We would recommend taking the vehicle to a professional shop to see if there could be an issue with possibly the install of the springs or something relating to it, that being said, the bump stops should not cause a noise like that unless they are loose.

    AMjordan

Helpful (0)

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Customer Reviews (100+) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Handling Improvement 4.784722 4.8
  • Ride Quality 4.645833 4.6
  • Appearance 4.958333 5.0
  • Bang For Your Buck 4.875 4.9



  • 5/5

    Installation Time: Full Day

    July 14, 2017

    Car sits right

    This drop makes a huge difference in appearance and performance. After install, check to make sure the rear is lined up side to side,as mine was off by 1/4 each side. Steeda subframe alignment kit fixed that. Add 25mm spacers to the Power Pack wheels and you'll have your mustang sitting and riding perfectly.

    JeezyForSheezy

    Year: 2017 Submodel: GT

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    May 30, 2017

    Good price and a decent drop

    I got these springs for my 16 gt with the performance package, I also got some koni struts and shocks to go with it, car doesn't ride any more rough then it did stock, definitely hugs the road alot better, plus a dropped mustang looks great, I got wheel spacers cuase it didn't look quite right with get wheels all tucked in the wells hope it looks better with the spacers

    RennyP

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Full Day

    May 27, 2017

    Eibach sportline springs=perfect drop

    Installed myself on jack stands with just hand tools no power tools rear took about 4 hours with pausing for rainy weather front took about 3 hours per side not hard just would be alot quicker with an impact and a helping hand followed a youtube video by cj pony parts great step by step instructions was going to get the 1" drop springs but after looking at customer pics i felt like it would not give me the drop i wanted glad i went with these! car looks great love how the rear wheels tuck some (stock 18s) alignment feels perfect goes straight like before will get it checked out after driving it a bit rides a little firmer not harsh at all would defenetly recommend

    BryanA

    Year: 2017 Submodel: GT

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    May 10, 2017

    Overview

    Looks great! Couple hours to install, just didnt come with instructions on how to install; did not know what side went facing up or down, heard a lot of noise after installed new hardware that came with the kit. Overall price is ok considering every brand is around the same area, but think the look is worth the investment. Just aligned it right away and no issues yet. just recommend getting control arms so the car doesnt go back to eating the inside of your tires.

    1Sleepwalker1

    Year: 2017 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    November 04, 2016

    The Perfect Drop!

    Sitting exactly where I wanted it. Install was easy enough, did it by myself in my driveway. Would've been nice to have an extra set of hands but it can be done.

    dewelrtx

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    September 26, 2016

    Great

    At first I was very unsure about these springs because I was afraid they would be too low. After having them on for two weeks I couldn't be happier and I haven't had any issues with scraping. 100 recommended

    Bob

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    September 22, 2016

    Awesome look

    Put these on in place of the performance pack Springs and the only complaint is I should of done it sooner.

    Aaron67

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    September 18, 2016

    Wow, gave the car what it needed!

    Amazing look, did the install myself in my garage and took about 5 hours. Once was finished the drop was very nice, made a huge difference look wise and looked way more sportier. Getting in and out of the car is much different now, handle bar feels so much lower like getting into a corvette lol. Ride is smooth unless you go over pot holes, but even then it's still comfortable.

    Nick

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    September 14, 2016

    Perfect drop

    They really are perfect i daily my mustang and wanted it to look more aggressive and it was a really easy install.

    Silki

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    September 03, 2016

    Amazing!

    Perfect drop! installation ran about 350 including alignment! You won't regret it

    Jay

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    September 01, 2016

    Awesome springs

    These springs dropped the car to perfect ride height. 1.4 front, 2.6 rear. No camber plates needed just a alignment. Thanks AM

    Ralph

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    July 29, 2016

    Perfect height

    The springs dropped the car down to the perfect height in my opinion. Very aggressive look without sacrificing any ride quality. Make sure you buy the camber adjustment bolts though also. The install was pretty straight forward and the irs actually was a lot easier than I anticipated. I had a lift and that helped a lot

    Anichols

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    July 19, 2016

    Awesome stance at a great deal!!

    These lowering springs are awesome! After installing them I saw an immediate difference in appearance and handling. I installed these myself in about 3 hours in my neighbors garage. No lifts, just Jack stands and a jack. Hardest part was using the springs depressors to get the old ones off and the new ones on. Ride quality is great too. Not to harsh... You feel the road more but in a good way. After these were on I went on a 500 mile road trip and the ride wasn't bad at all. I would recommend these to anyone who wants a great looking lowered s550 at a great price!

    Santa

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    June 30, 2016

    Amazing look

    The eibach lowering springs gave a better look to the car, really liked it.

    D

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    June 20, 2016

    Amazing...

    This springs make my 2016 GT look and feel incredible. I can hardly tell the difference between this and the factory's since I have the performance package and suspension was already stiffer on my GT, particularly in Sports mode. Best mod for such an inexpensive item. Very satisfied with my investment. Gabriel Augusta GA

    Shadow

    Year: 2016 Submodel: GT

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    June 19, 2016

    LOW RIDE

    Got the Sportline springs because the ProKit do not lower enough on the last Mustang I owed. The Sportline covers that problem.

    Irishblood

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    June 15, 2016

    Best suspension set up I have had

    This has definitely improved the ride. It's not too bumpy and has definitely improved cornering. The install was easy as I had most of the tools. I would definitely recommend this product as I have tried several suspension before and this has been the best.

    1evl50h

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    June 15, 2016

    What a stance

    Fitment is perfect stance is just what I was looking for took around 3-4 hours to install the ride is a little firm but handles awesome.

    Strmtrooer

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    June 10, 2016

    Sportline Springs

    The springs are great they lower the car the perfect amount that it looks low but does not rub. The handling has improved tremendously. I would recommend this as a purchase to anyone. The shipping from AM was also very fast!

    mxaj31

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    May 27, 2016

    Perfect drop

    In case anyone is wondering or worried about how low is too low, well, think no more. My apartment complex has some ridiculous speed bumps and after the drop, I clear them effortlessly and without scraping. Easy to install, straight forward, and worth every penny. Dont think just buy.

    Vic302

    Year: 2015 Submodel: GT

    Helpful (1)

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