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Eibach Pro-Plus Suspension Kit (15-18 GT w/o MagneRide)

Market Price $748.98 You Save 10% ($74.90)
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  • Item 384460
  • MPN# 35145.880

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    Features, Video & Details

    • Aggressive Stance - Lowers Center of Gravity
    • Improves Driving Performance - Eliminates Body Roll
    • Kit Includes Pro-Kit Springs and Front & Rear Sway Bars
    • Progressive Spring Rate - Estimated Drop: 1.0”
    • 35mm Tubular Front Bar; 25mm Tublar Rear Bar
    • Fits 2015-2018 GT Mustangs without MagneRide Suspension

    Review & Installation Video

    Review & Install Video

    Hey, everybody. I'm Justin with americanmuscle.com, and welcome to my detailed breakdown and install of Eibach's Pro-Plus Suspension Kit, available for your 2015 and newer Mustang GT. We'll cover some of the bigger points of the installation, and there is a fair amount of work involved here. But it's all very straightforward nut-and-bolt stuff, so I'm gonna go middle of the road two out of three wrenches on the difficulty meter with some more detail later on.So the Pro-Plus Kit from Eibach should appeal to the 2015 and newer owners out there looking to take care of both the handling and appearance at the same time, using a couple of quality components from a name like Eibach. Now, first up, these Pro Kit springs will drop your car one inch on all four corners, making them a great choice for the owners who wanna get rid of some of that wheel gap. But not slam the car to the ground at the same time like Eibach's other turnkey package, their Sport-Plus Kit. Finally, the sway bars will be an upgrade in diameter over the factory bars you're gonna be replacing. They are gonna offer some adjustability as well, really tightening up the car in the process and helping you reduce some body roll.But let's break this kit down a little bit further here, and let's start with these Pro Kit springs. Now, as a Mustang fan, Eibach has always been one of the most trusted names in suspension, and that certainly still applies here today. Now, as far as Mustang springs are concerned, Eibach keeps things pretty simple. You wanna go low, you go with the Sportlines. If not, you do the Pro Kit springs, which we have here, and that does still apply to the S550 spring offerings.As far as that exact drop, well, you're looking at just over an inch up front, one inch exactly for the rear, and this tends to be the sweet spot for the S550. And as a result, it's a drop you're gonna see with a lot of the aftermarket springs in the category and for good reason, right? Because it's enough to get rid of that wheel gap but not enough or low enough to be dragging over every single speed bump or driveway in town. But again, if you really did wanna go lower, check out those Sportlines like we already talked about. You're looking at 1-1/2 inches all around, giving you a more modified or aggressive stance, and you can pick up the Sportlines by themselves or in the Sport-Plus package, as it's called here on the site, for the exact same price as the Pro-Plus Kit here.Now, the Pro Kit springs do also feature a progressive spring rate. And what does that mean? Well, it's something that you're gonna see with a lot of aftermarket springs because it's going to offer the best of both worlds. You're gonna get a softer initial spring rate here with the Pro Kit springs or other progressive springs, making them good for daily drivers out there. Gonna be a little bit more comfortable while cruising, and then, once the spring starts to compress a little bit more, those spring rates tend to firm up, offering you improved handling. So again, I like to think of this as the best of both worlds.Now, these spring rates exactly, well, you're gonna looking at 200 to 314 for the front, 800 to 914 pounds for the rear, so you are getting a little bit of a range there between that softer initial spring rate and the firmer final rate. Now, that lower center of gravity working with that firmer spring rate will help improve a couple of different areas in your car's performance. You're gonna see less body roll, so the car's gonna feel a little bit more confident in turns, a little flatter, as we like to call it. You're gonna see less nosedive when you really stab the brakes and a little less squat when you're really gettin' on it. But again, the springs are only one-half of the equation here, gang. As you can see, we also have Eibach's Front and Rear Sway Bars. They are three-way adjustable, and in my opinion, they are gonna offer a huge upgrade over those factory sway bars. As far as exact diameter, well, you're looking at 35 millimeters for the front, 25 millimeters for the rear. Both bars are tubular, and that is nice because it's gonna help save a little bit of weight, compared to the heavier, solid design, without really compromising any rigidity.Now, I've said it once, and I'll say it again. I tend to think these cars are just a little under-barred from the factory to better suit the masses, as opposed to you and I, the spirited drivers. So by upgrading the diameter for both front and rear bars, giving you that adjustment, it's gonna work with the springs in helping to reduce your body roll, of course. But it's also gonna help the car just rotate through the turns a little bit better. And what do I mean by that? Well, anybody's that driven these things hard probably have noticed the fact that the cars tend to plow or push through the turn, as opposed to rotate. This is called "understeer," and it's something that you can help dial out with the addition of an aftermarket adjustable bar from Eibach.So again, with the bigger bars in place, you can set up a neutral balance to the car or maybe even set up a little bit of oversteer, depending on how you adjust the bars themselves. Totally up to you. Everybody has a different driving style. I would just suggest playing with your settings and seeing what works best for you. Regardless, I can guarantee you that once the springs and sway bars are installed onto your S550, the difference or improvement in handling performance is just gonna be so noticeable it will really blow you away. And in fact, don't take my word for it, guys. Feel free to check out our Customer Review section. We get a lot of feedback on the site from guys who have actually installed this kit on their S550, have pounded the pavement with it, and I'm sure you're gonna like some of their responses.But getting back to these bars here, again, they are three-way adjustable for both the front and rear bar, and it's essentially gonna allow ya to soften or stiffen the bar up, depending on your driving style. As a rule of thumb, Eibach always like to recommend starting with the middle hole and just kinda working from there to dial in your optimal settings. The bars themselves have been constructed from cold-formed, high-strength aircraft grade steel, finished in the red powder coat that you see here just to help reduce any corrosion over the years. Now, the sway bars themselves do not actually include any end links here, but I'd strongly suggest picking up a set of adjustables for the front, especially if your S550 is lower. They're also throwing in some nice stuff here with the rest of the kit, greaseable polyurethane bushings for both the front and rear sway bars, you're getting some dust boots or dust covers for the front struts, and they're also giving you some bump stops with the kit as well.As far as price is concerned, well, you're gonna be looking at just south of 700 bones here for the Eibach Pro-Plus Suspension Kit. Which, in my opinion, guys, really isn't all that bad when you consider what you're getting here, an extremely high-quality suspension kit that's been designed to work together in harmony. And basically, Eibach has just taken all of the guesswork out of this thing for ya. And believe me when I tell ya, guys, this is just one of those parts that you're really gonna feel the moment it's been installed and the first time you go around the block.But let's touch on that install here briefly, guys. And as I pointed out earlier, yes, there is a fair amount of work and elbow grease involved with this installation, but it's all very straightforward stuff. And in fact, most of it can be accomplished with a basic socket set, a few open-ended wrenches, and some other random hand tools. So I'm sticking with two out of three wrenches on my overall scale of difficulty here, maybe a few hours to a half a day in the shop or garage to get knocked out, depending on your level of expertise. And of course, don't forget your spring compressor for this one, as it will be needed. Now, in addition to those tools I just talked about, you're also gonna need to get the car in the air slightly using a lift or jack and jack stands, if you like.Now, the fronts, in my opinion, are definitely gonna be the more time-consuming part of the install. The entire front strut assembly needs to come out, swap those springs using your spring compressor, and then reassemble in reverse order. The rear springs on the IRS-equipped S550 will be a little bit more tricky, compared to the solid rear axle cars of previous generations, but still not that bad overall. Instead, you're just gonna need to loosen those rear sub-frame bolts enough to let the sub-frame sag, remove those factory springs, swap in the new Eibachs, and you should be good to go there.As for the sway bars, well, the rear bar you can do in your sleep. That is very straightforward and very easy with the car in the air. The front might take a little bit more work because there are a couple of brackets you need to hit through the engine bay. So grab all of the extensions in the toolbox and knock those out. And I think having a buddy on hand to help you kinda fish the front bar through the engine bay just makes life a little bit easier. But maybe your experience will be a little bit different. Regardless, guys, I always like to encourage you. Go to an alignment shop after the install. Please, just do it. You're only gonna be doing yourself and your car a favor by making sure everything is in spec.And with that in mind, this is a great time to bring up some possible add-ons here with the Eibach Pro-Plus Kit. Now, because this is a very mild drop, you're probably not gonna need any aftermarket caster camber plates or anything like that because the factory stuff should offer enough adjustment to get you back into spec. That being said, it's never a bad idea to give you a little bit more play with your alignment settings if you are really into road racing and that sort of thing. Also, guys, if you're putting this stuff on relatively low-mileage dampers...I'm talking shocks and struts here...you shouldn't have too much of an issue. However, I'm always gonna tell ya aftermarket shocks and struts are designed to work better with a lower ride height and firmer spring rate of an aftermarket spring. So if that's something that you can factor into the budget, your car will definitely react a little bit better accordingly.But what do ya say we stick a fork in this one, guys. The Eibach Pro-Plus Kit is gonna offer a lot of bang for your buck for your S550 GT. And what do I mean by that? Well, the improvement in handling will be night and day, compared to the factory components you're replacing, and the improvement in appearance, thanks to that lower ride height, certainly doesn't hurt either, right? So, guys, that is gonna do it for the Eibach Pro-Plus Kit, which you can grab for your S550 GT right here at americanmuscle.com.

    Improves Handling. Improve the handling of your S550 Mustang by upgrading to an Eibach Pro-Plus suspension kit. This kit is engineered to lower your S550 Mustang's center of gravity as well as reduce body roll which results in reduced squat during acceleration, superior handling, flatter cornering and better stability in any aggressive driving situation.

    Improves Appearance. Not only does this Eibach Pro-Plus Suspension Kit improve the handling of your S550 Mustang, 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.

    Complete Kit. This Eibach Pro-Plus Kit comes complete with Pro-Kit Performance Springs, a 1.375" (35mm) front tubular sway bar, a 0.98" (25mm) rear tubular sway bar, brackets, grease-able polyurethane bushings and all the required installation hardware.

    Eibach Pro-Kit Springs. Eibach's Pro-Kit Springs feature a proprietary progressive design that provides the ultimate balance to deliver aggressive good looks and high performance handling, without ever compromising safety or ride quality. Estimated Drop: Front - 1.0” Rear - 1.1”

    Eibach Sway Bars. Eibach manufactures their Anti-Roll Bars from cold-formed, high-strength aircraft-grade steel for precision performance. Both the 35mm tubular Front Sway Bar and 25mm Rear Sway Bar are 3-way adjustability which allows you to fine tune the handling of your S550 Pony to suite your personal driving needs -  from mild to wild. Both are completed in a red powdercoat finish for great looks and long life.

    Application. This Eibach Pro-Plus Suspension Kit is specifically designed for use on all 2015-2018 GT Mustangs that is not equipped with the MagneRide Suspension.

    Fitment: 2015 2016 2017 2018 Details

    What's in the Box
    • (2) Front Lowering Springs
    • (2) Rear Lowering Springs
    • (1) 35mm Front Sway Bar
    • (1) 25mm Rear Sway Bar
    • (4) Polyurethane Bushings
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    8 Questions / 6 Answers

    Ask a Question

    DO I NEED A adjustable pan hard bar to be installed with it? I HAVE A 2017 GT.

    SergeC

    • You would not need a pan hard bar to install this Eibach Suspension Kit. The IRS eliminates the need for it.

      AMRich

    Helpful (1)

    is drilling required for the sway bars?

    RandyR

    • Drilling is not required for these sway bars as they already come with the bolt holes.

      KevinD92

    Helpful (1)

    Are these sway bars an upgrade from the factory performance package sway bars in the GT?

    KK

    • Yes, the Eibach Pro-Plus Suspension Kit will include larger diameter Sway Bars than the Factory Performance Pack sway bars. The Performance Pack GT comes with a front sway bar with a diameter of 32mm and the rear diameter is 22.2mm.

      TerriB

    Helpful (0)

    Hi, do i need to do any sort of re balancing or re adjusting the car after installing these?

    Mohd

    • Yes, you will want to have your car aligned after installing the Eibach Pro-Plus Suspension Kit

      VincentV

    Helpful (0)

    What is the difference in the Eibach sway bars and the upgraded Ford PerformancePack sway bars ?

    RB

    • The Eibach sway bars are 3 way adjustable while the Ford sway bars are only 2 way adjustable. The Ford front sway bar is 1.5mm thicker than the Eibach Front sway bar. Also, the Ford sway bars retain the factory style bushings which helps maintain the factory ride quality.

      VincentV

    Helpful (0)

    would that kit fit with the EIBACH 25mm wheels spacers? I have them in front and back.

    SergeC

    • The Eibach Pro-Plus Suspension Kit can be used with wheel spacers but this may not provide adequate wheel clearance depending on your wheel offset and tire size.

      Rob D

    Helpful (0)

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    Customer Reviews (19) Write a Review

    Overall Rating 4.9

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$250-$500

    • Handling Improvement 4.894737 4.9
    • Fit 4.894737 4.9
    • Bang For Your Buck 4.736842 4.7



    • 4/5

      Installation Time: Shop Install

      Installation Cost: $500-$1000

      December 18, 2017

      Great Daily driver

      I just got my car from the shop today and drove it for about an hour. Bars almost completely eliminated body roll. Still remnants of stock nose dive in braking and picking up in hard acceleration. Drop isn’t as much as they could’ve gotten away with without making it the sport line kit, still a good amount. Perfect kit for the daily really makes the car handle a lot better then the stock. Seems like a really great stock alternative. Makes your car meaner and handle better than the average mustang on the road. Cost about 350$ to install yet charged around 900$ for labor costs (even with 20 discount) be prepared to fork over a pretty penny if you live in the Bay Area, CA.

      BrettD

      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      December 09, 2017

      62 STILL THROWING GEARS

      I AM A 62 YEAR OLD STREET RACER. I HAD FORD PUT THE COBRA COLD INTAKE AND TUNE MY GT. THEN WE PUT THE FORDS SHORT SHIFTER AND THIS SUSPENSION PACKAGE COMPLETED THE CAR. THIS IS THE WAY FORD SHOULD HAVE BUILT IT, DEFINITELY WORTH THE MONEY. AND STILL HAVE FULL FACTORY WARRANTY

      JTB

      Year: 2017 Submodel: GT

      Helpful (4)

    • 4/5

      Installation Time: Afternoon

      November 23, 2017

      Yes we GOT POWER

      Good Toy and Fun for me and Yes we GOT POWER. Now we can get the Power on the street.

      Kiwi2015GT

      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      July 17, 2017

      Down low

      So glad I picked the eibach springs and sway bars. This car looks mean. Handles like a dream. Doesn't lean like a boat in the turns

      CarlD

      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      July 11, 2017

      Best mod so far

      I was curious if I would even be able to notice a difference but wow - I am very impressed. The car stays perfectly flat under braking, acceleration, and cornering. Turn in is precise, and with the help of the sway bars, the car just rotates through turns like it should. - The sway bars are adjustable though. So you can set them up to be on the mild side or a bit more aggressive. This is a huge improvement on the dynamics of the car.

      Greg

      Year: 2016 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      July 10, 2017

      Down low

      I noticed the difference as soon as I put the car on the ground. Driving it ,it's a whole other world. It just carves through the corners. This was a great investment. Thnx . American Muscle for the great videos which made the decision easy.

      CarlD

      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      July 04, 2017

      Great product

      Adds so much performance and eliminates body roll! Worth the money!

      Dean

      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Full Day

      June 29, 2017

      Eibach, Best Lowering Springs

      I have used Eibach Sportline Springs and Sway Bars on my 2004 GT. What a Difference that made. It was like a little slot car. Lots of fun. I went with the Pro Plus Kit on my 2015 GT. It made a BIG Difference then the stock Springs. I love the ride.

      TroyS

      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      June 11, 2017

      eibach review

      Great product put sway bars on alone first and made a huge difference. Springs are a good improvement as well but springs are a little bouncy over road imperfections and difference is noticeable from stock but benefits still outweigh negatives. Shop in Fresno, CA charged me 400$ for install

      RafaelP

      Year: 2016 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Full Day

      May 19, 2017

      Eibach Pro Plus Kit

      After install, my car rides like a champ..!! Body roll virtually eliminated and springs feel way better than stock in every way. I'm still smiling every time I drive my Stang.

      TroyR

      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      March 02, 2017

      Eibach

      What a difference. Car handles much better and looks amazing

      MiguelV

      Year: 2016 Submodel: GT

      Helpful (2)

    • 5/5

      February 23, 2017

      I love them

      The car looks great and the ride is even better. Well worth the money I've had a ton of compliments on them already most often people say "it looks mean"

      MattB

      Year: 2016 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      December 17, 2016

      Completely changed drive quality

      It took about 3 hours in total to install the springs and the sway bars. Not a hard install at all. I recommend however that when you lower your car with any springs you purchase adjustable rear toe links,a bump steer kit, and camber bolts so you can get your alignment back into specs. After everything was installed it completely changed the way my Mustang responded to bumps and curves. Far smother on bumps. Great for daily driving sense I drive mine back and forth to work everyday. It feels so healthy around curves and got rid of the nose dice I hate so much. The Mustang should've came stock with these springs. I personally love them on my car. Great investment. I recommend this mod for all Mustang owners.

      Prodigy

      Year: 2015 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      November 16, 2016

      MOST HAVE

      The handling of the car drastically increased. It is a must have product. Handles like an AWD car.

      Jorgey

      Year: 2016 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Full Day

      June 08, 2016

      Sweet ride

      At first I didn't think the 1 inch would make that big of a difference in the lowering springs. But man oh man what a difference. And the sway bars what a difference handles like it's on rails awesome I would highly recommend this product

      dskgon

      Year: 2016 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      April 27, 2016

      Wow what a difference!!

      Wow what a difference this kit makes!! Body roll is almost gone and the drop is absolutely perfect changes the whole look of the car. I have installed this kit on every car I have Owend and I am truly happy every time. I highly recommend this kit to anyone that has a 2015/2016 mustang you will be as happy as I am I'm sure of it.

      Gtstang48

      Year: 2015 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      April 14, 2016

      Motorsport look

      Looked at various springs, really like the forum reviews of the Eibach Prokit. Right now it rides more bumpy than the GT PP springs which is odd The sway bars instantly made the car more tight. It turns much better and much more confident. I'm hoping for the springs to become smoother. Great 1inch drop! Car looks much better lower.

      nsquared

      Year: 2016 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      March 04, 2016

      Completely changes handing for the better

      Pro springs and sway bar with middle settings eliminated all body roll in street driving. Haven't pushed it extremely hard, but the floating and rolling from the OEM suspension is gone. I notice no change in steering/alignment with the pro springs, which is a big plus.

      andy

      Year: 2015 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      August 23, 2015

      BEST CORNERING KIT EVER

      I transfer to 2015 GT from 2011 GT a few weeks ago and stock handling feel was very surprised to me . but this cornering kit is even much much better!!!!

      polofiat

      Year: 2015 Submodel: GT duluth, GA

      Helpful (2)

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