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Eibach Sportline Lowering Springs (15-19 GT w/o MagneRide)

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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”
    • Clears Stock and Aftermarket Wheels & Tires
    • Not Compatible on 2019 Performance Pack or MagneRide Equipped Vehicles
    • Fits 2015-2019 GT Mustangs

    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 2015-2019 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 2015-2019 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 2019 Details

    MPN# 4.14535

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    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?

      Customer Photos (100+) Submit Your Photo

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        Questions & Answers (101)

        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 (9)

        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 (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 (4)

        I have 295/40/20s on my rears will this cause any rubbing or should I go with a less aggressive lowering option?

        • You would be able to run the 295 tires in the rear with this kit but you may experience some rubbing when going over bumps. We would recommend a kit that would have a 1" drop in the rear or running lower profile tires with this lowering kit.

        Helpful (3)

        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, https://www.americanmuscle.com/koni-sport-adj-strut-1516.html, and Koni Sport Adjustable Rear Shocks, item # 390804, https://www.americanmuscle.com/koni-sport-adj-shock-1516.htmlwould 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 (3)
        Post Your Question
        10 More Questions
        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. 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
        Will these work with the 2019 Bullitt? 1 answer
        When you say it won't fit performance pack. Are you referring to performance pack 1 or performance pack 2 or both??? 1 answer
        Hi I’ve been doing research I’m really only one step away from purchase but before I do, I have (20/255/30 35mm offset Front) (20/305/30 45mm offset Rear). Curious Will it clear on the rear and will I experience some rubbing? Also would I need caster camber plates to take care of bump stops? 0 answer
        Hi I’ve been doing research I’m really only one step away from purchase but before I do, I have (20/255/30 35mm offset Front) (20/305/30 45mm offset Rear). Curious Will it clear on the rear and will I experience some rubbing? Also would I need caster camber plates? 0 answer
        Hi I’ve been doing research I’m really only one step away from purchase but before I do, I have (20/255/30 35mm offset Front) (20/305/30 45mm offset Rear). Curious Will it clear on the rear and will I experience some rubbing? Please let me 0 answer
        I'm currently running 17x10.5 with 305 45 17 MT ET Street R. Will I have good clearance with no rubbing if I run these springs? 0 answer
        I installed these springs and want to add an offset. What wheel offset do you recommend for 19inch wheels with 285s in the rear. What is the largest offset until rubbing will occur? 0 answer

          Customer Reviews (100+) Write a Review

          Overall Rating 4.9

          out of 5 stars

          Installation Time:Full Day

          Installation Cost:$100-$250

          • Handling Improvement 4.667605 4.7
          • Ride Quality 4.543662 4.5
          • Appearance 4.946479 4.9
          • Bang For Your Buck 4.850704 4.9



          • 5/5

            Installation Time: Full Day

            May 18, 2019

            Well worth it!

            I just installed these on my 2018 mustang gt and must say the drop is considerable. I would definitely have a second set of hands helping you with it though. Overall alot of hard work to install yourself but well worth it. Was also delivered fast. Thanks American muscle for helping me give my car the aggressive stance it deserves!

            Axiom

            Year: 2018 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Full Day

            May 12, 2019

            Makin it right ,,,

            Looks way better with the dropped look / springs look stronger than stock

            DavidP

            Year: 2017 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            April 30, 2019

            Eibach Sportlines

            Car sits perfectly. Handling feels better. No issues.

            LeeH

            Year: 2015 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            April 23, 2019

            Amazing springs

            Makes my 2016 GT look just the right level of low. I don’t scrape or anything. The install you can definitely do at home if you have all the right tools. It’s a bit of a headache but worth it to do yourself. The ride quality compared to stock springs is very similar. Can definitely feel the turns better with the lower center of gravity. 10/10 would definitely recomend installing these on your stang.

            Spencers

            Year: 2016 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            March 30, 2019

            Julio_s550

            Good springs if you don’t wanna see any gap on your s550

            2x15GT

            Year: 2015 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Afternoon

            March 29, 2019

            Perfect!

            These are perfect with my staggered 19” RTR tech 7 wheels. I’m running 295 30R19 in the back and 275 35R19 in the front. Most likely going to go 305 in the rear on my next set!

            AaronP1993

            Year: 2017 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            March 15, 2019

            Great looking springs

            I installed the springs a few months ago and still love them. They ride great, look great and do exactly what they're supposed to do with no issues.

            RyanN

            Year: 2017 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            March 14, 2019

            Great product and easy install

            Great product easy install if you have 2 people. Fyi if you hear a knock after you install these check the nuts on the top of the shocks and torque everything.

            TylerM

            Year: 2015 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            March 12, 2019

            Handeling is far better

            This was a great decision in springs. Overall ride not bad stiffened up a bit can tell if you hit a bump but cornering is night and day diffrence

            Chester

            Year: 2016 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Afternoon

            March 11, 2019

            Eibach Sportline Lowering Springs

            Love the look and the control of these new springs.

            JeffreyJ

            Year: 2018 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            March 11, 2019

            Mustang gt

            Definitely worth it better control around corners!

            LewisJ

            Year: 2016 Submodel: GT

            Helpful (0)

          • 5/5

            March 06, 2019

            Perfect

            Love everything about these springs. The car drives amazing as if almost out the dealer you just get that sporty feel and a tad more stiff. 100 better than stock. I wouldn’t go with any other springs!

            Anonymous

            Year: 2015 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            March 05, 2019

            Highly recommend

            This was an easy modification that took about 1/2 day. I did one side and then the other, DON'T DO THAT. do the front and then the rear. Would also reccomend 1" spacers for the front and 1/2" spacers on the rear OEM Performance Pack wheels.

            JohnH

            Year: 2015 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            March 04, 2019

            Lowering springs

            Everything about these springs are awesome! I'm very happy.. Thanks again AM!

            EvanB

            Year: 2018 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            March 04, 2019

            Perfect height

            Car is sitting perfect. Clears 305s out back and 275s up front no problem

            LucasG

            Year: 2015 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Afternoon

            February 27, 2019

            Joining the low life.

            Driveability improved on the corners. Compared to the stock springs they do feel a bit rougher, but is not a big difference. It lower your car as advertised! Watch out if you have aftermarket wheels, if you have the wrong off set it might cause rubbing. I was able to put 325 in the rear because the off set was right. The car need alignment after installing springs. Installation was easy, a couple of friends helped me. It was done in 3 hours, without rushing it. The tricky part is the front springs, I had to take them to a dealership to compress them. My car was lifted on all 4 sides using 4 jack stand. You might want to use a low profile jack.

            AngelR

            Year: 2017 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Afternoon

            February 24, 2019

            Eibach Sportlines

            The springs are exactly as advertised. Really drops the front and rear of the car for a super aggressive look. Did the whole install in my drive way with nothing more than hand tools and jack stands. The only thing I will say is that the car seriously needs an alignment after the springs fully settle. the rear wheels get a lot more negative camber and tuck inside the fenders. Other than that the looks great and handling definitely improves.

            Nick

            Year: 2017 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Full Day

            February 18, 2019

            Awesome Springs

            These springs got rid of the monster truck wheel gap on black accent package wheels. Paired well with 25mm spacers - no rubbing. Springs also help with nosedive and body roll.

            JasonW

            Year: 2017 Submodel: GT

            Helpful (4)

          • 4/5

            Installation Time: Shop Install

            February 18, 2019

            Awesome

            Been on the car about a week, so far, so good, no rubbing or clearance issues.

            Jeff

            Year: 2017 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Afternoon

            February 18, 2019

            Eibach sportline lowering spring

            I highly recomend this product the car look amazin I love it

            JCRUZ30

            Year: 2019 Submodel: GT

            Helpful (2)

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