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Steeda Sport Springs - Progressive (15-18 GT, EcoBoost, V6 w/o MagneRide)

Market Price $279.95 You Save 11% ($30.00)
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$249.95 (set of 4)

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  • Item 390077
  • MPN# 555-8210

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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 2015-2018 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 2015-2018 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 Details

    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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    7 Questions / 7 Answers

    Ask a Question

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

    Riley

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

      AMRickyD

    Helpful (0)

    Would these have any rub issues with 275/40r20

    FranciscoB

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

      AMRickyD

    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.

    Chan

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

      AMJEFF

    Helpful (0)

    Do you have the spring rates for these, front and rear?

    Larry

    • The Steeda Sport Springs have a spring rate of 145-225lbs in the front and 525-820lbs in the rear.

      TerriB

    Helpful (0)

    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?

    DanielW

    • We do not offer a kit that has these springs combined with the Ford Performance Street Handling Pack, however these springs would work with the rest of the kit if you were to purchase these and the Street Handling Pack and swap out the springs. I would recommend caster camber plates as well.

      Doug P

    Helpful (0)

    Can these springs be used with the factory struts/ all other suspension components?

    Tomitheus

    • Hi, These springs can be used with the factory struts, We do suggest upgrading to a set of shocks and struts with adjustable dampening to get the best ride quality.

      Chris J

    Helpful (0)

    People Who Bought This Item Also Bought

    Customer Reviews (23) Write a Review

    Overall Rating 4.8

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$250-$500

    • Handling Improvement 4.590909 4.6
    • Ride Quality 4.772727 4.8
    • Appearance 4.909091 4.9
    • Bang For Your Buck 4.863636 4.9



    • 5/5

      May 31, 2018

      Progressive Springs

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

      AnthonyE

      Year: 2015 Submodel: GT

      Helpful (2)

    • 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 (1)

    • 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 (1)

    • 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 (1)

    • 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 (3)

    • 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 (2)

    • 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 (1)

    • 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 (4)

    • 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 (5)

    • 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 (3)

    • 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 (3)

    • 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 (2)

    • 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 (2)

    • 5/5

      Installation Time: Afternoon

      June 05, 2017

      Perfect stance and they feel great

      Gave my mustang a whole new look! Nice and aggressive stance without being too low. They feel great, car has alot less body roll and doesn't squat or brake dive as much now. Install was easy on a lift but can be done on some jack stands.

      Sebastang

      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      May 11, 2017

      Steeda Progressive Springs

      First of all, American Muscle was great as always. I placed my order over the phone on a Thursday and the springs arrived by the end of the day Friday. I took my car to a shop due to not having the tools needed at my apartment. They had the car finished in 2 hours, but they did have 2 guys working on it, so roughly 4 hours for the install would be pretty accurate. The improvement in handling was noticed immediately. I have a 2016 GT with the performance package, which initially I thought cornered pretty well. Now the car handles even better in the turns (feels planted, less body roll, etc.), as well as greatly reduced nose dive under hard breaking and less squat under acceleration. These springs are a little stiffer than the stock PP springs, but not enough to ruin a daily driver (my car is my daily). You can feel the road a little more but IMO that's not necessarily a bad thing. As for appearance, the Steeda progressive springs gave my mustang the exact look I was hoping for. With the approximately 1.25" drop in the front and 1" drop in the rear, it creates equal wheel to fender gap and gets rid of that reverse rake. The front bumper/splitter does sit closer to the ground (obviously) but I've gone over plenty of different size speed bumps and transitioned from a flat to inclined surface with zero scraping. I waited about a week after my install before I got the alignment done because I wanted to let the springs settle. The alignment is off, so don't try to save money and avoid getting it done. So after you've read all that, here's the "long story short," I highly recommend these springs.

      JasonH

      Year: 2016 Submodel: GT

      Helpful (9)

    • 5/5

      Installation Time: Afternoon

      March 21, 2017

      Love the stance !

      I had the same springs on my ecoboost and put them on my GT as soon as I got it

      Shelbywannabe

      Year: 2016 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      March 20, 2017

      Steeda Progressive Springs

      Ride quality is very good and aggressive stance would recommend springs to anyone.

      MikeH

      Year: 2016 Submodel: GT

      Helpful (2)

    • 5/5

      December 12, 2016

      Love it!!

      Absolutely love the steeda progressive set up. Not slammed but perfect ride height that eliminates wheel gap. Handles noticeably better. Pair these up with some thicker sway bars and feel the difference.

      Andy

      Year: 2016 Submodel: GT

      Helpful (8)

    • 4/5

      September 23, 2016

      STEEDA LOWERING SPRINGS

      DEFINITELY SOMEWHAT SOFTER RIDE THAN THE SR BRAND LOWERING SPRINGS THEY REPLACED . HIGHWAY RIDE IS VERY GOOD, BUT AROUND TOWN IS NOT SATISFACTORY TO ME .

      GINO

      Year: 2015 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      May 17, 2016

      The perfect drop!!

      These Steeda springs are amazing. In my opinion they write better than stock and they're extremely easy to install. It took me only a couple hours. It made the car looks so aggressive and took the wheel gap completely away! I would highly recommend them to anybody!

      Michael

      Year: 2016 Submodel: GT

      Helpful (2)

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