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Steeda Sport Progressive Lowering Springs (15-19 GT, EcoBoost, V6 w/o MagneRide)

AmericanMuscle no longer carries the Steeda Sport Progressive Lowering Springs (15-19 GT, EcoBoost, V6 w/o MagneRide). Please check out 2015-2019 Mustang Springs for an updated selection.
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Features, Video & Details

  • Steeda Sport Springs
  • Lowers Center of Gravity for Improved Handling
  • Lowered Muscle Car Stance
  • Progressive Spring Rate
  • Blue Powdercoated Finish
  • Estimated Drop: Front - 1.125”, Rear - 1.0”
  • Made in the USA
  • Not Compatible on MagneRide Equipped Vehicles
  • Fits 2015-2019 GT, V6 and EcoBoost Mustangs
  • Clears Stock and Aftermarket Wheels & Tires

Review & Installation Video

Review & Install Video

Hey, guys, Stephanie with AmericanMuscle.com, here with the Steeda Sport Lowering Springs for 2015 and up, S550 Mustangs. The Steeda Sport Progressive Springs are gonna be a good option for those of you out there that are looking for a lowering spring for a daily driven car or a street car that has a high-ride quality and still lowers the car. These springs are ideal for the daily driver and some occasional track use as well. These are a progressive spring that's gonna maintain ride quality and provide performance and enhance the looks of the car all at the same time. These springs offer a drop of just over one inch in the front of the car and one inch in the rear. So this is pretty much in line with the drops that a lot of the other springs offer, except a touch lower in the front. So, the lowering spring is gonna lower the center of gravity of the car to provide some handling improvements like reducing squat and body roll in corners and eliminating nose dive under hard braking. The drop that these springs offer is enough of a drop to eliminate the majority of the gap between the tire and the fender, and it's gonna leave the car sitting just above the wheels and tires, with some room to spare. So just for reference, we did install these in our 2015, with 255/40 19s on the front and 305/35 19s on the rear. The drop will look a little different, depending on your wheel and tire set up, and these were installed on our eco-boost [SP]. The majority of the springs out there are offering a one-inch drop, and this may sound small to you but the S550 Chassis doesn't need a huge drop to obtain better looks or an improvement in handling. The S550 responds well to even a one-inch change in ride height. You'd be surprised at how well the S550 Chassis responds to a good set of springs in both the looks and the performance categories. These are gonna be compatible with both the factory and after market wheel and tire setups, which is another nice feature of not having to really dump the car to improve the looks. It's a plus side of the S550s. They look good and respond well to a little bit of lowering so you can create a functional low, meaning low enough to look good but not low enough to cause issues either on the tire or under the car. It's gonna leave you with a very streetable [SP] car still. So, usually, drop, ride quality, and performance are the main concerns when you're shopping for springs. These are a progressive spring, which means they have a progressive spring rate, which means that they're a good option for a street car. They don't have a harsh ride quality but they will firm up as you start pushing the car, which works to give you the best of both worlds between comfortable and functional. Steeda does offer a linear spring as well, if you don't want a progressive spring. So when it comes to ride quality, sometimes you can get a rough ride quality when you start lowering the car more, but that's not the case with these springs. Customers have actually given quite positive feedback on the ride quality of these springs. The ride isn't that much different than stock, besides the car having less body roll and being more planted overall. These aren't a stiff spring, they're more forgiving. The ride will be a little stiffer but it's not gonna be uncomfortable. Overall, these springs are intended for street and occasional track use, so they do give a stiffer than factory ride quality but they're made to not be harsh, so it's still comfortable but also able to perform when you want them to. As far as price, these springs are gonna be right in between the $200 and $300 mark, which is right where the majority of other springs are falling as well. Of course, there are some springs that are either less expensive or more expensive than that, and even springs that are all across this rice range. I will say that these are closer to the $300 mark, though. So the install here is gonna take about four hours, and I'm gonna call it a solid one out of three wrenches on the scale because you will need some knowledge to complete this install. So I'd recommend having the knowledge of a helping hand or taking this to a shop for the install if you haven't done this before, especially since it's always a good idea to get an alignment after the install anyways. 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. You're gonna need a few tools, including a spring compressor, so you can make sure you have that before you start the install. You're gonna 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 springs 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 gonna be a little bit different, but nothing crazy here. Essentially, the IRS [SP] 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 that they're uninstalled. There's no surprises here. The bombstop [SP] is slid on to the shock, followed by the factory dust boot. Then the new springs can be installed and the IRS subframe can be bolted back up, and that's about all it's gonna take. Like I mentioned earlier, a fresh alignment after the install isn't a bad idea. Wrapping things up here, the Steeda Sport Springs offer a one and a quarter inch drop in the front of the car and a one-inch drop in the rear. They have a progressive spring rate and they're designed for street and occasional track use. As always, I suggest you check these out more online for yourself, and for all things Mustang, keep it right here at AmericanMuscle.com.

Improves Handling. The Steeda Sport Progressive Springs are ideal for the daily driven, street or even the occasional track use Mustang. Not only does this set of blue powdercoated Steeda Springs lower your S550's center of gravity, but it will reduce squat during acceleration, body roll in the corners and excessive nose-dive under hard braking, all while maintaining a quality ride.

Progressive Rate. Using a progressive spring rate, this set of Steeda Sport Springs provides a softer ride when going over bumps and road imperfections, plus enhancing the handling performance for your S550 Mustang. They will also improve its overall appearance, by lowering the ride height approximately 1.125" in the front and 1.0" in the rear, to eliminate the ugly "4x4" tire to fender gap, for a more aggressive street stance.

Clears Stock and Aftermarket Wheels & Tires. These lowering springs were engineered to be compatible with your stock 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. This set of four Steeda Sport Progressive Lowering Springs are specifically designed for use on the 2015-2019 GT, V6 and Ecoboost Mustang, including both Fastback and Convertible models.

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

Note: Coupon codes cannot be applied to this product.

Fitment: 2015 2016 2017 2018 2019 Details

MPN# 555-8210

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

What's in the Box
  • (4) Lowering Springs
Installation Info
Tech Specs
Springs Specifications
Spring Rate: Front: N/A
Rear: N/A
Usage: Street
Year: 2015-2017 GT, V6 & EcoBoost Model: Fastback/Coupe & Convertible
Progressive or Standard: Progressive Estimated Drop:

1.125" F / 1" R

Will it fit my Mustang?

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Questions & Answers (9)

5 Top Rated Questions

Will i have a problem with clearance on my 2015 gt limited anniversary edition? I have factory wheels and tires 255/40-R19 (front) and 275/40-R19 (rear) with 1 inch wheel spacers.

  • You will not experience clearance issues with that set-up combined with these Steeda Sport Progressive Lowering Springs.

Helpful (0)

Would these springs have a different impact on a stock s550 GT vs a PP s550 GT? I was asking since the PP s550 GT comes lowered stock. Thank you.

  • The listed drop amount is based on a Non Performance Pack Mustang. Performance Pack Mustangs will see less drop overall, as their stock springs allow the car to sit lower from the factory.

Helpful (0)

Can I get my 17 gt's alignment back to factory spec with these springs or will I need camber bolts as well?

  • With these springs you would want to get Camber bolts to help get the car back to the factory spec.

Helpful (0)

Would these have any rub issues with 275/40r20

  • The Steeda Sport Springs will not cause any rubbing issues no.

Helpful (0)

I have a 2015 GT Premium, how do I know if I have a magneride suspension or not? I'm looking to lower the car as my next upgrade but I don't want to buy something I can't install.

  • Magne-ride was only introduce in 2018, so the Steeda Sport Springs would work flawlessly on your 2015 GT.

Helpful (0)
Post Your Question
4 More Questions
Do you have the spring rates for these, front and rear? 1 answer
Can I use these springs with the Ford Performance Street Handling Pack, if I would exchange the Ford Performance springs against these? If yes, would I need camberplates? 1 answer
Can these springs be used with the factory struts/ all other suspension components? 1 answer
Are caster camber plates necessary to align properly for this set of springs? 1 answer

Recommended For You

Customer Reviews (30) Write a Review

Overall Rating 4.8

out of 5 stars

Installation Time:Full Day

Installation Cost:$250-$500

  • Handling Improvement 4.551724 4.6
  • Ride Quality 4.724138 4.7
  • Appearance 4.827586 4.8
  • Bang For Your Buck 4.827586 4.8



  • 4/5

    Installation Time: Afternoon

    January 31, 2019

    Should've been at this height from Ford..

    Nice quality springs evenly matched height all around and reduction is as advertised. With 285X35-20 rear and 255X35-20 front, nose is about 1/4" lower than rear for nice rake and better aero. Ride seems better than stock springs, no jounce and rebound drama. Deters wheel hop, though my auto isn't as much problem as sticks are. Time consuming install, and you'll need a 3 to 5 lb. hammer to knock bolts out of spindle. Also those bolts draw up very slowly on reinstall, so keep tightening until certain the head bolt is pulled up flush with surface of strut mounting. Complaints of noises are likely from not getting all bolts tight there, and top strut nut. Hold strut piston rod (inside spring with channel locks) from turning to get that nut tight. Also make sure springs are "clocked" in proper position in upper and lower rubber seats. RH rear is harder than left on 18'-19' because tailpipe is right under that frame bolt, and also sway bar hits pipe when you push down far enough to get spring out. Have a 250 pound friend and 6ft prybar and it will move enough to extract spring. Bend unbolted brake line down a bit with your hand to not damage rubber hose when prying axle down. A 12" "wobble" extension and short socket will get bolt from above pipe. Taking my time was 4 hours on jack stands.

    RobertC

    Year: 2019 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Afternoon

    October 11, 2018

    Perfect look

    These springs are the best I have ever seen on the new S550 chassis. I really like the drop and appearance they provided and the handling is noticeably better.

    JP

    Year: 2018 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Weekend

    October 06, 2018

    Steeda Sport Progressive Springs

    Really improves look. With 20mm spacers, eliminates tire-fender gap and adds slight rake. Retained stock dampers. Handling is more responsive without reducing ride comfort significantly. Very satisfied with product.

    PaulY

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    October 02, 2018

    Great feeling and looking springs

    The car rides the same as before and handles a bit better. It also looks so much better than having that factory wheel gap. Although be warned, watch for parking blocks or steep incline because you will scrape.

    MatthewH

    Year: 2016 Submodel: V6

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    September 22, 2018

    Afternoon Install

    Id say the average enthusiast can do this install. Highly recommend impact gun. Highly recommend using a good spring compressor. Will make your life easier trust me. If you have access to a lift Id HIGHLY suggest it. So far im happy with the install. Ride doesnt seem to be affected by these springs and feels pretty close to stock.

    RobK

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    September 11, 2018

    MUSTANG GT 2017

    The car looks great, and sits the way I wanted to. The drive to STEEDA was about 3 hours away from me, but well worth it.

    TommyD

    Year: 2017 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    September 09, 2018

    Good starting point.

    The springs so far are really nice, seems to corner a little flatter. The installation was pretty straightforward the better spring compressor you can find the easier it will be. I like the appearance but will definitely be getting some wheel spacers. I also haven’t had any scraping going over speed bumps.

    MonteG

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    May 31, 2018

    Progressive Springs

    Perfect ride height. Car looks amazing. Low but not too low!!

    AnthonyE

    Year: 2015 Submodel: GT

    Helpful (4)

  • 5/5

    Installation Time: Afternoon

    May 17, 2018

    Great

    Great set of springs. The ride is firm but doesn’t beat you up. And it sits just Low enough to look good but not rub on everything.

    NBRUNCIE

    Year: 2015 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    April 24, 2018

    Great add on

    The stance is great. A noticeable difference in ride not as harsh as the pp spring that was original equipment.

    MarkB

    Year: 2016 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Shop Install

    April 13, 2018

    As advertised.

    The ride is like stock but lower it's very comfortable to cruise.. I haven't pushed it through many corners yet.

    ZZ

    Year: 2015 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    March 28, 2018

    Girlfriend finally feels safe

    I have a 2015 mustang gt pp and about a year ago I hydroplaned in busy traffic with my girlfriend in the car and we slipped into a ditch with just a scrape on the wheel. After that day she never felt safe in my car again. As soon as I got these springs installed in my car 4 days ago, my girlfriend now feels safe again. The car handles way better. The car sticks really well when accelerating through winding roads. We both have our 100 confidence in my car again. You barely feel a difference in ride quality compared to pp springs. The car has a perfect height now, wheel gap is practically gone all around. I don't have to worry about speed bumps and uneven roads but now I do have to worry about parking stubs because you will hit it directly. These springs are 100 worth it after doing research and making calls to American muscle, cj pony parts and steeds themselves. BTW you don't need camber plates with these, they will align back to spec after an alignment. Shop took 4 hours on the job. If you don't have aftermarket springs on your mustang, GET THESE. These springs blow stock springs right out of the water, it doesn't even feel like the same car anymore.

    Frank

    Year: 2015 Submodel: GT

    Helpful (5)

  • 5/5

    Installation Time: Afternoon

    February 13, 2018

    Exactly the look and ride I was hoping for

    I love the look. Read the instructions completely. Cut your factory bump stops. I almost missed that step. Other than that the installation is straight forward. If you have the proper tools the install only takes a couple of hours.

    JosephF

    Year: 2016 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    January 27, 2018

    Perfect fitment

    I recommend these springs for anyone looking a more agreesive look for a daily driven car!

    BradleyR

    Year: 2017 Submodel: GT

    Helpful (4)

  • 4/5

    Installation Time: Afternoon

    November 29, 2017

    Good value,better look and improved handling

    These springs lowered my 2017 pp GT an inch. It definitely looks better and does lower cg. If you want a mild lowering stance, these are perfect. I use this as a spirited street car and love curves. I own multiple BMW’s(m3’s) and club race one. Does not make me a Mustang expert, but I am pleased with the street ability as well as the performance in turns. Ride up front softer than pp Springs until you lean on it. Springs out back are definitely stiffer and seem to help the bite. I usually run a softer set up on my race car, but the weight of the Stang needs this.. ...pretty ford blue......good value, pleased.

    PhilipF

    Year: 2017 Submodel: GT

    Helpful (5)

  • 5/5

    Installation Time: Afternoon

    November 15, 2017

    Excellent Product.

    Love these springs. There were a breeze to install and my car handles great. No more nose dive under hard braking.

    JayP

    Year: 2017 Submodel: GT

    Helpful (6)

  • 5/5

    Installation Time: Afternoon

    September 16, 2017

    Perfect springs for a GT PP

    Very happy with the stance and the ride quality from these springs. I haven't had a chance to push the car to test the handling but it feels about the same as the stock PP suspension

    CraigCC

    Year: 2017 Submodel: GT

    Helpful (4)

  • 5/5

    Installation Time: Afternoon

    August 19, 2017

    perfect stance

    I think the drop with this set is perfect. Not "slammed" - and gets rid of the wheel gap !

    AntonioG

    Year: 2017 Submodel: GT

    Helpful (4)

  • 4/5

    Installation Time: Less than 1 Hour

    August 08, 2017

    Steeda lowering springs

    Springs handle phenomenal just wish they were .3 or .4 lower in the front. But I'm happy with them all the way

    Ottomanscamber

    Year: 2015 Submodel: GT

    Helpful (3)

  • 4/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    June 10, 2017

    Wheel hop!!!!

    The overall look is amazing really like the stance the springs give the car but they did give me wheel hop every time I "warmed up " my tires .. didn't have much of that with the stock ones .. think with some better shocks I should have better results..

    Jose

    Year: 2015 Submodel: GT

    Helpful (3)

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