Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$4,500 Giveaway! 3 Winners Enter Now

Ford Performance Street Lowering X-Springs (15-20 GT Fastback, EcoBoost Fastback w/o MagneRide)

Item 384408
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Market Price $336.52 You Save 19% ($64.53)
Our Price

$271.99 (kit)

FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
In Stock

Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features, Video & Details

    • Aggressive Muscular Stance
    • Improves Handling
    • Lowers Center of Gravity
    • Progressive Spring Rate
    • Estimated Drop: Front - 1.0” Rear - 1.0”
    • Clears Stock and Aftermarket Wheels & Tires
    • Intended for Street and Occasional Track Use
    • Not Compatible on MagneRide Equipped Vehicles
    • Fits 2015-2020 GT and EcoBoost Fastback

    Review & Installation Video

    Review & Install Video

    Hey, guys. Stephanie with, here with these lowering springs from Ford Racing for 2015 and up S550 GT and EcoBoost Fastbacks. The Ford Racing X-Springs are gonna be a good option for those of you out there that are looking for a lowering spring for street and occasional track use that's gonna maintain ride quality but still provide performance and still get rid of the majority of the wheel gap that the S550 has. These springs offer a drop of one inch all the way around the car, which is enough to lower the center of gravity to provide some handling improvements, like reducing squat and body roll in corners and eliminating nose dive under hard braking. A one-inch drop is also gonna improve things on the appearance side, so no more big wheel gap, and you'd be surprised at how well the S550 chassis responds to just a one-inch drop in both the function and the looks categories. The one-inch drop will keep a little bit of space between the tire and the fenders, but it's even-looking and I wouldn't consider it a gap anymore. It's a functional low, and by that, I mean it's low enough to look good but not low enough to causes issues either on the tire or under the car. It's gonna leave you with a very streetable car still.You may have already noticed, but the majority of springs are only offering a one-inch drop because the S550 chassis doesn't need a huge drop to obtain better looks or an improvement in handling. The S550 responds well to what some of the older generation Mustangs would consider a very small change in ride height. There are some springs that'll give you a larger drop, but not by much, but they will still get you lower if you're looking for the maximum drop from a spring. And these are gonna be compatible with both the factory and aftermarket wheel and tire setups, which is just another plus of the 1-inch drop. Just for reference, we did install these on our 2015 EcoBoost with 255/40-19s and 305/35-19s on the rear. The drop will look a little different, depending on your wheel and tire setup.The other thing to consider when you're shopping for springs, besides the drop, is ride quality. These are a progressive spring, which means that they have a progressive spring rate, and that 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. Normally the trade-off with springs is less ride quality for better performance or a better look, since in typical fashion, the factory suspension is set up more for having a comfortable ride quality and being easy to drive than anything else. The stock springs are soft and they allow for wheel hop and a lot of body roll in the corners, so there's a lot of room for improvement.As far as ride quality, though, these aren't far off from stock. They're not a stiff spring. They are more forgiving. You'll probably notice a difference in ride if you drive your car every day. It will be a little stiffer, but it's not uncomfortable. Overall, these springs are intended for street or occasional track use, so they do give a stiffer-than-factory ride quality. But they're made to not be harsh, so still comfortable but also able to perform when you want them to. Ford Racing does also offer a track spring if you want something more along those lines.As far as price, these springs are gonna be right in between $200 and $300 mark, which is right where the majority of other springs are falling as well. Of course, there are some breakout springs that are either less expensive or more expensive than that and even springs that are all across this price range. At the end of the day, it's really about what you want from your springs and what you plan on doing with your car, and that will help direct you to the right spring.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 a knowledgeable helping hand or taking this to a shop for the install if you haven't done this before. It's always good to get an alignment after the install. 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 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 line, and 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's 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 mat, so you can slide the rear springs out. Just like the front, the rear springs install the same way they were uninstalled, no surprises here. The new bump stop is slid onto the shock followed by the factory dust boot. The new spring can then be installed, and the IRS subframe can be bolted back up. 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 Ford Racing X Lowering Springs offer a one-inch drop all the way around, 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

    Improves Handling. Installing a set of progressive rate Ford Racing X-Springs will lower your Mustang's center of gravity, which will reduce squat during acceleration, body roll in the corners, and excessive nose-dive under hard braking. Ford Racing X-Springs are great for daily driving, street, and even occasional track use.

    Aggressive Stance. The Ford Racing X-Springs not only improve the handling of your S550 Mustang, but they also improve the overall appearance by lowering the ride height approximately 1.0" to eliminate that nasty raised 4x4 truck look for a more aggressive muscle car stance.

    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. This set of four Ford Racing X-Springs are designed specifically for use on the 2015-2020 GT and EcoBoost Fastback Mustang models. Does not fit convertible models.

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

    Fitment: 2015 2016 2017 2018 2019 2020 Details

    MPN# M-5300-XA

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (2) Front Springs
    • (2) Rear Springs
    • Jounce Bumpers
    Installation Info
    Tech Specs
    Springs Specifications
    Model:GT, EcoBoostModel:Fastback/Coupe
    Progressive or Standard:ProgressiveEstimated Drop:

    1.0"F / 1.0" R

    Will it fit my Mustang?

      Customer Photos (57) Submit Your Photo

      View All 57 Photos

        Questions & Answers (33)

        5 Top Rated Questions

        Hows the spring rate on these compared to performance pack spring rate

        • Unfortunately Ford does not provide a listing for the spring rate of the Performance pack springs, however the Ford Performance Street Lowering X-Springs seem to have a similar feel, though slightly stiffer, than the performance pack cars we have driven.

        Helpful (11)

        Will these springs also lower a performance pack gt 1" or is thia for a base GT. I have seen some places say the PP GT is already .5" lower but I can't confirm this to be true.

        • Thank you for your question about the Ford Performance Street Lowering X-Springs - Fastback (15-17 GT, EcoBoost). The 1 inch drop is going to apply to the Performance Pack GT. The Performance Pack GT does come with springs rated differently than other GTs, but the overall ride height would be the same.

        Helpful (6)

        So... in this same thread, there's conflicting responses. One response says that the GT performance pack is already lowered from the factory, and another response says that it is not. What's the truth data here?

        • The Performance Package for 15+ will sit at the same height as the non performance pack, but will have a stiffer spring rate. Only the GT350 and GT350R will have a different ride height. This was verified through the Ford Tech Service.

        Helpful (5)

        Hello guys. I drive my car daily to work, don't track (drag) the car often. Are these the right springs to use with a '17 Perf. Pack GT or are the Track springs a the right combination?

        • Yes, this will be able to be used on that style of car without issue, with it being a progressive spring rate, the quality of ride on the vehicle is mostly unchanged until cornering harder or going at a higher rate of speed, making it excellent for a daily driver.

        Helpful (3)

        I’ve currently got a a 275/35/20 and 315/35/20 on my 2017 Performance Pack. The current wheels have the same offset as factory performance pack wheels. Would these springs cause me to rub or would it just be a tight fit?

        • The Ford Performance Street Lowering X-Springs will provide minimal lowering on Performance Pack equipped Mustangs, as the Performance pack came with a 0.75"-1.0" drop.

        Helpful (2)
        10 More Questions
        What is the difference between the X and Y springs? both seem to lower the same amount ... about 1" 1 answer
        Would these springs work well with the factory shocks and struts that come with the performance pack gt? 1 answer
        If the drop is only one inch, do I still need to purchase camber bolts or adjustable camber plates? How badly is camber affected by installing these springs? 1 answer
        Can I use these with a Koni Yellows? 1 answer
        Will there be a problem using the stock base model shocks with these springs on a 2018 GT? 1 answer
        I have P265/35R20s any fitment issues? 1 answer
        Do these fit on 2017 v6's? One answer says yes, another one says no. CJ Pony Parts also have the same springs on their website and they advertise that it will fit 2015-2017 V6's 1 answer
        Will this void my 2018 gt's warranty? 1 answer
        About to install these next weekend. The Ford logo printed on these springs should be face up when installing these springs? I know RTR springs have specific instructions that the logo should face up to know that's the correct side. Don't see one from Ford. Thanks! 1 answer
        Will the Ford Performance Street Lowering x springs function properly on my 2019 Ecoboost convertible? What amount of drop can I expect? 1 answer

          Customer Reviews (65) Write a Review

          Ratings Summary

          4.9 out of 5 overall rating from 65 customers

          Installation Time: Full Day

          Installation Cost: $250-$500

          • November 16, 2019

            5 2019 GT - KonaBlue19GT Installation Time: Shop Install Installation Cost: $500-$1000

            2019 Kona Blue GT

            Love the lowered look, ride doesn't feel any more harsh than with stock springs. Haven't tested them for handling yet.

            Helpful (0)
          • November 09, 2019

            5 2019 GT - Leift Installation Time: Afternoon

            Looks great

            Easy install. Quality part. Just low enough without major modifications.

            Helpful (0)
          • October 22, 2019

            5 2019 GT - Anon777 Installation Time: Afternoon

            Perfect Fit and Excellent Apperance

            Easy install with the right tools and following the video instructions.

            Helpful (0)
          • October 09, 2019

            5 2019 GT - BertoR Installation Time: Shop Install Installation Cost: $1000+

            Great upgrade for my 2019 PP1 GT

            I got these and paired them with the Ford Performance track shocks and struts kit on my PP1 GT Mustang. Although ford says 1 inch all around, the results were more like the eibach springs. It lowered a little bit more in front then out back, I am not sure the exact amount but I love the stance now. The ride is a slightly stiffer then the pp1 springs but overall a very smooth ride still. It cruises nice on the highway and handles like a beast on the mountain roads. Since I paired this with the track shocks and struts, it makes for a wonderful combination of comfort and performance.

            Helpful (1)
          • September 27, 2019

            5 2015 EcoBoost - 15EcoBoost Installation Time: Shop Install Installation Cost: $500-$1000

            Ideal upgrade

            We just put these on our 2015 Mustang. It lowered the car just enough to notice a difference but not so much that the car looked slammed to the ground. We combined lowering the car with 19" GT350 replica wheels and it looks perfect. I have used several springs in the past such as Eibach and Steeda, however this is the first time buying a Ford product. The ride of the car stiffens up just a little bit but maybe not as extreme as other springs. Extremely satisfied.

            Helpful (0)
          • July 31, 2019

            5 2018 GT - Phoneman1223 Installation Time: Full Day

            Lowered Life

            Paired these springs with Steeda Active shocks and Ford Performance track sway bars. For starters these S550’s are so easy to work on. The shocks and springs have definitely improved ride comfort but when you push the car hard in the twisting roads things really stiffen up. In short this 2018 GT non pp is perfect now. These cars also love all the mods for the IRS. I currently have Steeda rear cradle brace, Ford knuckle bearing,red rear diff bushings and front g track brace.

            Helpful (0)
          • July 14, 2019

            5 2019 EcoBoost - PeterK Installation Time: Full Day

            Slight drop, instant ride change.

            I wanted a drop that changed the ride dynamics, but that wasn't too dramatic. That is what you get with these springs. I could instantly tell the difference in ride. The entire ride stiffened and way less body roll in corners. Be prepared for a very involved install. I had a lift and it was still more time consuming that initially thought.

            Helpful (0)
          • July 01, 2019

            5 2017 GT - Nobody Installation Time: Shop Install

            Ford Performance Street

            I really like these springs. I chose these because I wanted a minimal drop, which was one inch all the way around. If someone would have put these on without me knowing, I wouldnt be able to tell much of a difference from the stock springs. They do tend to be a little stiffer around corners and punching the gas though. They did exactly as advertised and dropped a perfect one inch all the way around. I'm glad I put these on and would reccomend them to people who want a cleaner wheel well look and to keep a slightly stiffer than stock suspension.

            Helpful (0)
          • June 24, 2019

            5 2019 GT - SG

            Better ride!

            The stance is so much better now, the ride quality didn't suffer, better feel when taking off, breaking or riding those curvy back roads. Installed and back on the road in about 2 hours.

            Helpful (0)
          • May 29, 2019

            5 2019 GT - Details Installation Time: Shop Install Installation Cost: $250-$500

            Lower my world

            These springs drop the car 1” on all 4 corners and they look great.

            Helpful (0)
          • May 22, 2019

            5 2015 GT - Cool Installation Time: Shop Install Installation Cost: $250-$500

            Perfect for

            Better ride than the factory springs. Highly recommend Ford Performance springs.

            Helpful (0)
          • May 13, 2019

            4 2018 GT - mowat3 Installation Time: Shop Install Installation Cost: $250-$500

            Subtle difference for great response

            A slight change in stance but definite improvement in handling and control. Love the new look and ride. Stiffness is noticeable but not unbearable on rough roads. No rubbing, but do need to watch frontend scrapes.

            Helpful (0)
          • May 11, 2019

            5 2015 GT - David Installation Time: Afternoon

            From Eibech to Ford Performance

            While the Eibech lower springs that were already on the Mustang. They were too stiff and really didn't allow for me to use the car as a daily driver. The Ford Performance Street lowering X-Springs raised the car from a 1.6' to a 1' drop. Keeping the Mustang lower than the OEM springs would. Also, giving it a stiffer ride than OEM springs.

            Helpful (0)
          • April 18, 2019

            5 2015 EcoBoost - Chriwhatsup1 Installation Time: Shop Install Installation Cost: $500-$1000

            Just Right!

            If youre trying lower your car and not have the hassle of worrying about dips and speedbumbs And dosent fill stiff and bumpy it feels just as comfortable as the stock ones This is a perfect set of springs. And get an alignment post installation

            Helpful (0)
          • April 12, 2019

            5 2018 GT - RogerW Installation Time: Full Day

            23018 GT spring upgrade

            Had the springs installed by my local Ford dealer and they did a great job although it took all day. Ride quality is similar to factory springs but definitely handles corners with more precision and sway is almost eliminated. Car look's more aggressive with the degrease space between the tires and the wheel wells. A great MOD.

            Helpful (0)
          • April 07, 2019

            5 2019 GT - Mohammad Installation Time: Afternoon

            Ford performance

            They are very comfortable and increased my handling. Very happy with them.

            Helpful (1)
          • April 02, 2019

            5 2016 GT - FoHo21 Installation Time: Full Day

            Great springs for what I was after.

            These springs will lower your car by about an inch. The ride quality vs. OEM Performance Package springs is comparable with the X springs being slightly stiffer, it's not a huge difference at all. There's not as much body roll on initial turn in either. But overall if you like the ride/handling with the PP springs, you'll like these as well. These springs seem to pair well with the PP struts/shocks. Overall I'm pleased, I wanted a lower ride height with minimal changes to the ride and handling and these springs deliver on that.

            Helpful (1)
          • April 02, 2019

            4 2018 GT - William Installation Time: Afternoon


            Good product. if you want more stiff ride get more than one inch lower I guess. the ride feels almost stock.

            Helpful (0)
          • February 14, 2019

            5 2016 GT - JohnW Installation Time: Afternoon

            Just right

            Bought this to provide better handling and stance. For me, just right

            Helpful (3)
          • February 02, 2019

            5 2016 GT - SuhailS Installation Time: Afternoon

            Drop it drop it drop it low

            Looks good. Ride isn’t unforgiving. It’s neither too low nor a 4x4. Doesn’t scrape anywhere.

            Helpful (4)

          Related Mustang Categories