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Eibach Sportline Lowering Spring Kit (15-18 GT w/o MagneRide)

Market Price $294.30 You Save 10% ($29.43)
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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”
    • Not Compatible on MagneRide Equipped Vehicles
    • Fits 2015-2018 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 2015-2018 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 2015-2018 GT Mustangs. Sold as a set of four.

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

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

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

    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: 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?

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    67 Questions / 4 Answers

    Ask a Question

    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).

    AnthonyH

    • 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.

      AMCoalSVT

    Helpful (1)

    Do the front tires rub while turning

    SamC

    • 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.

      AshleyK

    Helpful (1)

    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.

    JosiahB

    • 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.

      Rob D

    Helpful (1)

    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)

    Hey I Have a 2018 Mustang gt w/o MagneRide, 235/50/18 wheels...Do you think I will have rubbing issues or the car being to low with Eibach sportline?

    Donald92

    Will i have any rubbing issues with 305/30zr/19 rear?

    JasdishT

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    Customer Reviews (100+) Write a Review

    Overall Rating 4.9

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$100-$250

    • Handling Improvement 4.70155 4.7
    • Ride Quality 4.562016 4.6
    • Appearance 4.96124 5.0
    • Bang For Your Buck 4.875969 4.9



    • 2/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      May 22, 2018

      Looks great, sounds bad...

      I had a reputable local shop handle the install. Everything went smoothly and installed with no issues. After driving, I noticed a substantial noise from the front driver's side while at parking lot speeds going over bumps. Some noise when turning the wheel as well. Took back to the shop and they found nothing wrong. Just to be sure they disassembled the strut and then reassembled. Noise is still there, seems to be getting worse and now on both sides. Have no idea what's going on. The car only has 16,000 miles on it. I had zero noises before the install. Sway bar, all connections and bushings are good.

      DustinR

      Year: 2017 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      May 22, 2018

      great drop

      I was looking to give my 2018 mustang Gt a lowered stance and it ended up sitting right where I want it close to perfect and has a nice ride to it .

      GuillermoG

      Year: 2018 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      May 22, 2018

      Eibach sportlines

      Great product drop is perfect for my daily commute to work and home feels great in and out of turns if you can add a set of maximum motor sports caster camber plates you'll be happy you did and a good alignment and your set thanks AM

      KeilaG

      Year: 2015 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      May 20, 2018

      Lowwww

      Installed on a 2018 gt with performance package and they are pretty much as low as you can go without bags. Most shops with new clamps will not be able to align the car after due to how low it is so you will need to find a shop that can.

      Ryan

      Year: 2018 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      May 17, 2018

      Perfect look (must read for PP mustangs)

      First i will like to say the video that CJ pony parts made on how to install these had a part that was wron where he installed the front bump stops upside down. I followed that video and installed mine upside down but i don’t think it makes A difference. Besides that install definitely comes down to having a good spring compresser. I rented one from local parts store but it sucked i wasted a lot of time trying to use it but Made things hard. Luckily the shop i was in had a better tool i could use and it made Things much easier. I followed the CJ pony parts video and everything wasn’t that bad. The rear bump stops on PREFORMANCE PACK mustangs were bigger then the Bump stops that came with this kit. I couldn’t get the bump stops off the shocks anyways in the rear so i left the stock ones then just replaced the springs. The car rides good no problems

      KJ5oh

      Year: 2016 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      May 17, 2018

      Perfect drop!

      It was a perfect drop for my 17 GT and it filled out the void in the fenders nicely. I notice a little ride quality loss, but nothing that would make me want to swap back. You can really only notice it on some rough roads with a slight bounce but no creeks or bumping noises at all. I installed Them myself in the garage with a jack and jack stands using YouTube videos and it is pretty straight forward. It took me about 4 hours by myself because I had to go to the hardware store and get a bigger hammer to hit the spindle bolts out. That by far was the most difficult part of the install for me. Once I got those out it was a smooth install. If your on the fence about what springs to get, jump on these for a great look and good ride quality.

      BrianB

      Year: 2017 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      May 17, 2018

      Love these springs. Looks awesome!

      No rubbing w/ 20s. No more wheel gap. Nice aggressive stance

      JacobR

      Year: 2017 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Full Day

      May 15, 2018

      Excellent Product!

      These are the best springs out there, it gives an amazing stance to the car and lowers it almost to coil-over level. Best investment of lowering springs, I highly recommend!

      BrandonB

      Year: 2018 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      May 13, 2018

      Est Lowering Springs

      These springs give my car a perfect stance, I drive a V6 S550 2017 and these springs work perfectly. So for all you V6 owners out there these springs are for a V8 but work amazingly on the V6!

      JosiahB

      Year: 2017 Submodel: V6

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      May 10, 2018

      Rides like stock comfortable

      Love the springs, got rid of the gap and handles great!

      AlexC

      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      May 10, 2018

      Suspension perfection

      I ordered it and received it the very next day. I wasn’t expecting it so it was a great surprise. It’s a top quality product and I’m beyond happy

      Jason

      Year: 2018 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      May 08, 2018

      From Pro to Sportlines

      Didn’t get the drop I was hoping from the pro so I went to the sportlines you really will notice/see the .3 and .5 difference from pro to sportline. Ride quality I can say it’s the same. I’m happy with my change.

      DarPrecious

      Year: 2017 Submodel: GT

      Helpful (1)

    • 4/5

      Installation Time: Full Day

      May 07, 2018

      Hidden details

      I did the install myself, there's a little extra work removing additional frame supports on the convertibles. I also needed to purchase camber adjustment bolts after the install to get the front end in alignment. This was either not mentioned anywhere on AM website or I overlooked it. This is a pretty aggressive lowering kit, and I also purchased the performance black wheels and Nitto tire kit. Overall I love the looks but I'm still having trouble getting a correct alignment. I took it to the Ford dealer for the alignment and I've been told one of the rear tires are .5 degree out of alignment and they can't get any better than that. I'll get a second option, but this turned out to be more work than I thought.

      MarkB

      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      May 05, 2018

      Great springs

      Rides good for such an aggressive drop. Make sure you get a good alignment done!

      CarlosC

      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      May 01, 2018

      Eibach sportline springs

      Installed on my 15 mustang gt. Perfect drop for this car. At first I was worried about comfort considering how much it will drop the car, but if anything the ride comfort improved w these springs. I’m very satisfied with these since I was able to get te aggressive look, maintain or better ride comfort, and improve handling. Can’t go wrong with these springs.

      ItsRayRay

      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      April 30, 2018

      Lower than expected but looks sick

      Kit has everything bump stops and springs and they look cool asf in red, nice low profile, sits just onto my tyre, but Texas highways suck and it scrapes when I hit a bump at 80/90 mph, took about an hour a corner to install not aslong as I thought.

      Jack

      Year: 2018 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      April 30, 2018

      Love them!

      Love the way it looks and there's no rubbing at all. At times, is bumpy if the road is not in smooth conditions but that's to be expected besides that is great. Sooo happy!

      WilmarieP

      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      April 30, 2018

      Great Product

      Easy install Recommend a-lot of Workspace so you can easily move around, but overall no issues with installation.

      FrankC

      Year: 2015 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      April 27, 2018

      Very Happy

      Until I got them in the mail to the time I had them installed I Felt very hesitant that I was going to lose the ride quality. But luckily as far as ordering suspension on any vehicle this is for most the best purchase I have been made for my s550. Very aggressive look lowered just enough so it looks good no more nose dive handles like a champ I love it and honestly you have to be really looking for a difference to feel a ride difference between stock in this so definitely the best Springs.

      SatinderS

      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      April 24, 2018

      Perfect

      These springs are great, add the agrissive look the s550 is lacking from the factory due to its ride higher. These paired with 25mm spacers make your fitment almost perfect. Just be careful of scraping, I mostly hit just mufflers but there have been a few times where I’ll definitely hit frame when going into a bad driveway

      AustinM

      Year: 2017 Submodel: GT

      Helpful (1)

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