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SR Performance Lowering Springs (15-19 GT, EcoBoost, V6 w/o MagneRide)

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  • Item 387284

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    Features, Video & Details

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

    Review & Installation Video

    Review & Install Video

    Hey, everybody. I'm Justin with AmericanMuscle.com, and in this video I'm going to be breaking down the new SR Performance Lowering Springs available for your 2015 Mustang. The SR Performance Springs are the latest performance spring offerings for your S550, and in true SR Performance fashion, the price point's coming in a little lower than some of the other offerings available here at AM. That's because the goal of SR Performance is to offer performance and suspension components that will perform as intended, but without breaking the bank. Now, if the S197 SR Performance Lowering Springs are any indication on how these are going to perform, then all 2015 owners definitely want to give these a strong look. The '05 to '14 SR Springs are by far one of the most popular items here at AmericanMuscle.com, and the same qualities that made those so great are carried over to the new springs here for 2015. So, with all of that said, let's get into some of the big points here with these new SR Springs for 2015. Now, you can expect your S550 GT V6 or Ecoboost to be dropped approximately one inch on all four corners using these springs, which, in my opinion, seems to be the magic number here with the new chassis. It's definitely enough to get rid of that ugly wheel gap, of course, but at the same time, it's going to be very daily driver-friendly, meaning you're not going to scrape over every speed bump or pulling into every driveway. If you guys are regular viewers to the channel or to our site, of course, then you know besides looking cool, that lower center of gravity and lower ride height is also going to help you and your 2015 Mustang handle much better, of course. The 2015s, with their new independent rear suspension handle great right out of the box, but it's been my experience that these cars with a set of after-market lowering springs just feel much more playing it to the road. Going over some tech specs quickly with the SR springs...they are a progressive spring, meaning they're going to offer a nice comfortable ride under normal driving conditions, but then will firm up, of course, as they are pushed harder in turns. In addition to that, they will fit both your coupe and convertible S550, in addition to, again, all GTs, V6 and EcoBoost Mustangs. When it does come time to installing your brand new SR Performance Lowering Springs, well, it's a little bit more involved thanks to the new IRS, but really not that bad, overall. If you are attempting this install for the first time, you might want to leave yourself about a half a day in the garage to get everything knocked out. Most importantly here, make sure you have a decent set of tools on hand, and of course, that spring compressor as it will be needed here with this install. As always, guys, I like to recommend, give us a shout here at AmericanMuscle.com, get a Mustang expert on the phone, if you have any more questions about the install or about the SR Springs themselves. So if you're looking to drop your new Mustang, improving not only your looks but also your handling performance, while at the same time not breaking the bank, then be sure to check out the new SR Performance Lowering Springs for your S550, available right here at AmericanMuscle.com.

    Performance Handling. Installing a set of SR Performance Progressive Rate Springs will lower your S550 Mustang's center of gravity, which will reduce squat during acceleration, body roll in the corners, and excessive nose-dive under hard braking. SR Performance Springs are ideal for daily driving, street, and even occasional track use.

    Muscle Car Stance. Not only does a set of SR Performance Springs improve the handling performance of your Mustang, but they also improve its overall appearance by lowering the ride height approximately 1.0-inch eliminating that huge tire to fender gap, for a more aggressive street stance.

    Progressive Design. Progressive springs (also known as variable rate springs) are designed to be more compliant when riding over rough and uneven surfaces like public roads. Progressive springs are engineered with a low starting spring rate that increases as the spring compresses. Variable rate compression allows for a smoother ride, while still providing good handling characteristics when pushed hard. This makes progressive rate springs a popular choice for daily street driven Mustangs.

    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.

    Professional Installation Recommended. Seeing that a spring compressor is required for installation of these Coil Springs, AmericanMuscle recommends professional installation. With the proper tools, installation can be completed in about three hours. Please note that an alignment is highly recommended after installation.

    Application. This set of four SR Performance Lowering Springs are specifically designed for use on 2015-2019 coupe and convertible Mustangs equipped with independent rear suspension (IRS), including the V6, EcoBoost and GT models. Does not fit Shelby GT350 models.

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

    Fitment: 2015 2016 2017 2018 2019 Details

    MPN# 387284

    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: 185-275 lb/in.
    Rear: 800-880 lb/in.
    Usage: Street
    Year: 2015-2017 Model: Coupe/Convertible
    Progressive or Standard: Progressive Estimated Drop:

    1.0"F / 1.0" R

    Will it fit my Mustang?

      Customer Photos (100+) Submit Your Photo

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        Questions & Answers (57)

        5 Top Rated Questions

        I installed these by my mechanic, after a few weeks the rear started to make creaking sounds when moving at slow speeds over any kind of angle or bump. Did they not do something correct or is this normal?

        • No, The creaking sounds are not normal for this product. The SR Performance Lowering Springs will not provide any noises which will be different from the factory springs.

        Helpful (22)

        I will be putting this together with the 19' gt 350 wheels and will be running the recommended tires on a v6, will I need some camber plates as well for alignment or will I be fine?

        • It is recommended to either get caster camber plates or just camber adjustment bolts to get a correct alignment after the vehicle is lowered.

        Helpful (6)

        Will i need camber kit to get perfect alignment if I install these springs

        • These SR Performance Lowering Springs will likely not require any additional components because it will only lower the vehicle one inch in the front and rear. If you would like the additional adjustability, we would highly recommend the BMR Camber Adjustment Bolts, item 391005 or the Steeda Front Adjustable Camber Bolts, item 398192. https://www.americanmuscle.com/bmr-camber-adjust-bolts-front-1516.html https://www.americanmuscle.com/steeda-front-adjustable-camber-bolts-15117.html

        Helpful (4)

        So I have 20inch rims ,my tires are 255/35/20 and 285/30/20. If I combined these springs with 1 inch spacers, will it rub?

        • You should be able to install the SR Performance Lowering Springs with those size tires without any rubbing issues.

        Helpful (4)

        Hey AM, I have nitto invos 255/35ZR20 97Y in the front, and 275/35ZR20 102W in the back. will those springs fit well and wont cause any tear?

        • The SR Performance Lowering Springs will clear those tires without any issues yes!

        Helpful (2)
        Post Your Question
        10 More Questions
        I just ordered these springs and can't wait to put them on my 2015 GT, but will my tires rub? I have 20" staggered Shelby rims with 305 Micky Thompsom tires on the rear. 1 answer
        For GT PP cars, how does ride/handling compare to the current springs on the car? Will these be stiffer or about the same? 1 answer
        I have 20x10 (niche surge) wheels on 305/30/20 tires, will it rub? 1 answer
        What is the spring rate of these springs? 1 answer
        I have 20x10.5 rims and 285 tires in the rear with 20x9 and 255 in the front. If I combined these springs with the 1 inch spacers, will I rub? 1 answer
        Do you need a alienment 1 answer
        2018 GT with performance package. 255/19F 275/19R. Can I use these 1 inch SR lowering springs with 1-1/2” spacers? 1 answer
        I will be installing these springs alongside 20" wheels and 1in (25mm) spacers. Will I rub or can I keep the spacers on? 1 answer
        will these fit on a 19 pp1 car? 1 answer
        hey I have 305 30 20 on the front and back on American racing ar924 wheels will this SR Performance Lowering Springs fit ? 1 answer

          Customer Reviews (100+) Write a Review

          Overall Rating 4.7

          out of 5 stars

          Installation Time:Full Day

          Installation Cost:$250-$500

          • Handling Improvement 4.466258 4.5
          • Ride Quality 4.552147 4.6
          • Appearance 4.791411 4.8
          • Bang For Your Buck 4.72561 4.7



          • 4/5

            Installation Time: Weekend

            May 06, 2019

            Great value, good handling, subtle drop.

            Best bang for buck option to lower your car. Looks amazing however it doesn't really look like a lowered car. More like how the car should have come from the factory instead of with that massive factory wheel gap. Ride quality is good, nice and soft when cruising slowly but firms up when you push it. A little noisy at times but no worse than the stock springs. Overall body roll has been reduced nicely. For springs on a budget, I don't think you could do better than these. Make sure to have a pair of jack stands, a good jack, and a sledge hammer for getting the front lower strut bolts unstuck.

            NickL

            Year: 2015 Submodel: V6

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            May 01, 2019

            Excellent Mod

            Pleasantly surprised that 1" lower stance makes a big difference in both appearance and ride. I do not regret installing these lowering springs. Using 1" wheel spacers on stock performance pack wheels/tires and all is fine. Body lean is reduced during turns/acceleration/braking ang overall feel is improved. Will soon add wider rear tires and wheels.

            Hotrod

            Year: 2019 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 01, 2019

            Awesome Springs

            For being one of the lowest priced springs on the site the SR springs are great. There is no bouncing during your ride, the comfort on your ride feels like the car just came out from the plant. The drop is perfect. If your are undecided about which springs to get and are concerned about the price these are the one to go with.

            Jose

            Year: 2019 Submodel: GT

            Helpful (0)

          • 1/5

            Installation Time: Afternoon

            April 27, 2019

            The hype is not accurate

            I’ve driven on MANY lowering springs and this is by far the WORST set of springs I’ve driven on. Feels like I’m on a roller coaster when I’m going through a bumpy road not a stiff ride like it’s intended to be and didn’t feel ANY performance gain. Just a car that rides like a roller coaster. Should’ve gone with eibachs instead those have been my favorite yet.

            Augi

            Year: 2017 Submodel: GT

            Helpful (0)

          • 4/5

            Installation Time: Afternoon

            April 24, 2019

            I would go for more

            It’s great if you want minimal drop that’s not obvious, but if you’re looking for something more aggressive I would go for a larger drop. Great ride comfort though.

            jdprevo

            Year: 2017 Submodel: V6

            Helpful (0)

          • 4/5

            Installation Time: Afternoon

            April 23, 2019

            Great stance

            Still getting used to the progressive spring rate feel. Car feels nice and planted, body roll has been reduced. As expected, the change in springs while maintaining stock shocks has left the car with at times an under damped feel. This is most noticable when passing over dips in the road or over undulating road surfaces when the spring rate increases with the greater suspension deflection. The body seems to dive in with the suspension and pop out with a little bounce rather than ride over it. On average road surfaces it's not too bothersome.

            DRGN72

            Year: 2015 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Full Day

            April 23, 2019

            Instructions needed for convertibles

            These are exactly what I wanted, low but not too low. The only thing is they need to include instructions on how to install then in a convertible. The only difference in the installation is the removal of the X brace under the car, then follow the normal procedure.

            Brain505

            Year: 2017 Submodel: GT

            Helpful (0)

          • 5/5

            March 19, 2019

            Amazing

            Its a must cop if u want ur ride to feel great helps a lot on the road to make it feel smooth no complaints definitely better than stock!!

            IndalecioP

            Year: 2015 Submodel: EcoBoost

            Helpful (1)

          • 4/5

            Installation Time: Afternoon

            March 17, 2019

            Noticeable Difference!

            Install took me 5 hours. I have NEVER worked on suspension components before so I was a bit nervous. Ride height and overall feel has definitely improved, but I have to approach speed bumps with some caution. My main takeaways were 1) make sure everything is torqued to spec, especially when connecting the strut assemblys to the bottom mounting points (splined bolts). You'll hear noise if things aren't tightened properly! 2) watch when removing splined bolts. I used a 3lb sledge and this took some time and a lot of wacks. BE CAREFUL. I bent my dust shield and it was coming in contact with my rotors, causing an awful scraping noise when I drove (just bend back into place to fix). After the install, I took it to a shop to do a once-over as well as an alignment. Couldn't be happier with the results! These springs my staggered setup has given my ecoboost a very aggressive stance

            TimothyR

            Year: 2018 Submodel: EcoBoost

            Helpful (3)

          • 5/5

            March 13, 2019

            Lowering Springs

            I didn’t want the car to be too low so because were I live has lots of potholes but these springs did just what I wanted which was get rid of the wheel gap. Definitely recommend these to any who prefers there just be not much wheel gap.

            VictoriaP

            Year: 2016 Submodel: EcoBoost

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            March 11, 2019

            Springs

            The ride is nice and the look is even better..Let's get it stang bro's!

            PJ

            Year: 2015 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Afternoon

            March 04, 2019

            Great springs!

            I didn't want a severe drop, and didn't want to buy new wheels and tires, but I still wanted an aggressive looking stance with less fender gap. After doing some research I decided to get these along with 1" spacers on all four corners. The result was better than I hoped, and I think it looks really good. The ride is actually a little less stiff than the stock PP springs, and handling seems to be better with the lower CG.

            RonM

            Year: 2017 Submodel: GT

            Helpful (1)

          • 5/5

            March 02, 2019

            Great springs for the price

            Dropped 1" all the way around. Had shop do the install. Used BMR camber bolts also. Super pleased with how it turned out.

            DJO

            Year: 2015 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            March 02, 2019

            Lowering Springs

            Love the outcome ! I was very nervous about lowering my mustang ( first time ever lowering a vehicle). I went to OSAS in Taylor’s SC and they did an excellent job. Rides great and no noises from the springs !

            ShawnaNicole

            Year: 2017 Submodel: EcoBoost

            Helpful (0)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            February 28, 2019

            Stang Rider

            Very good purchase and I purchase a lot from AM. I maintained my comfortable ride but gained a noticeable stance and a much better handling experience. VERY GOOD CHOICE

            15Mustangcrazy

            Year: 2015 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Full Day

            February 27, 2019

            1” Lowering on GT

            Installed this past weekend. Was pretty straight forward. Looks great! Will get an alignment as soon as it comes out of storage for the winter.

            DaveS

            Year: 2017 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            February 25, 2019

            Amazing!

            Just installed these on my 17’ Ecoboost and these springs are amazing (for the price), if you’re looking for a spring kit that’ll perform, look good and not take away comfort go with SandR. Squat and dive is 70 gone, body roll isn’t as bad and wheel hop is gone.

            Sage

            Year: 2017 Submodel: EcoBoost

            Helpful (0)

          • 5/5

            February 24, 2019

            Not too shabby! Lol

            It really improve the handling and help my 0 to 60. Very happy about it.

            Jelm75

            Year: 2018 Submodel: GT

            Helpful (0)

          • 4/5

            Installation Time: Shop Install

            February 22, 2019

            Good

            Got the look I wanted. 1 inch def made a difference in stance.

            RW

            Year: 2018 Submodel: EcoBoost

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            February 18, 2019

            First time lowering a vehicle

            I took my springs to a local high rated shop, they put them on in about 3 hrs or so and I left out fine. The fit is great and ride quality was better than I expected. 1” drop front and back. Make sure to always do an alignment after any suspension work.

            JeremyH

            Year: 2018 Submodel: GT

            Helpful (0)

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