Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $6,000 In Store Credit 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 $316.99 You Save 12% ($37.00)
Our Price

$279.99 (kit)

FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
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.

      Review & Installation 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

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • 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


      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

      Ford Performance M-5300-XA

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (71)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 71 customers

      Installation Time: Full Day

      Installation Cost: $250-$500

      • May 03, 2020

        5 2018 GT - DanielLO Installation Time: Afternoon

        X Springs

        I love these springs. I debated on which springs to buy for over a year and I'm glad I found these as an open box deal on American Muscle. It was the added push I needed to buy these. They didn't lower the car too much, which would've been difficult living where I do. The look is much improved and ride quality didn't change at all. I definitely recommend a good spring compressor and a 2 post lift if you have access to one.

        Helpful (4)
      • April 23, 2020

        5 2015 GT - Quatilla Installation Time: Afternoon Installation Cost: $100-$250


        Exactly what I was looking for ! Smooth ride . Has the perfection drop that I wanted . Def worth buying.

        Helpful (2)
      • March 24, 2020

        5 2019 GT - Jakemon75 Installation Time: Afternoon

        Very happy

        Lowered the car nicely. Ride is stiffer but not bad at all. Corners flatter and doesn’t nosedive under hard braking as much. This car should have came with these springs from the factory. You will be happy. $550.00 for the install at a race shop in South Florida. Dealership wanted $1,400.00.

        Helpful (3)
      • March 21, 2020

        5 2015 GT - Katie Installation Time: Afternoon

        Looks great!

        Bought this for my boyfriend as a birthday gift.. he loves it! Easy to put in.. looks and drives perfectly!

        Helpful (3)
      • March 01, 2020

        5 2019 GT - 19GTPP1

        Handles and looks awesome!

        100 would recommend. The aggressive stance and added handling are amazing!

        Helpful (2)
      • February 25, 2020

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

        2019 Mustang GT w/Performance Pack

        These springs are perfect for street/daily driver applications. Normal driving is the same level of comfort. However, on hard cornering, the car is significantly flatter and much more stable. At highway speeds plus the car tracks very well. Paired these with Steeda camber plates and Steeda rear sub-frame alignment kit has really got the car dialed in. The drop is about 1 inch all the way around but maybe 11/4 inch drop in the front? I think the drop looks perfect with stock performance pack rims. Highly recommend.

        Helpful (4)
      • 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 (2)
      • November 09, 2019

        5 2019 GT - Leift Installation Time: Afternoon

        Looks great

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

        Helpful (2)
      • 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 (2)
      • 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 (5)

      Questions & Answers (36 answers)

      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 (9)

      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 (6)

      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 (3)

      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)
      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
      Will I have any issues with 255/40r19 on the front and 275/40r19 in the rear all on 19x9.5 rims 0 answer
      I have an 18 base GT. I have American racing 20 inch wheels, 275 35 on the front with a 35mm offset, and 295 35 on the back with a 45mm offset. Would there be any rubbing issues? 0 answer
      I have a 2017 S550 EcoBoost FB with 245/45/19”s all a round. Recently installed 25mm hub-centric spacers on front and rear, and I’m not clear if these Ford Performance X Series Street Springs will cause fit issues / tire rub. I’ve seen a few comments regarding measuring from widest part of the tire that is parallel to the fender. Any other insight to confirm these will work with my setup is appreciated. Thank you. 0 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

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Front Springs
      • (2) Rear Springs
      • Jounce Bumpers

      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

      • Bullitt - 19, 20
      • EcoBoost - 15, 16, 17, 18, 19, 20
      • GT - 15, 16, 17, 18, 19, 20

      Fits Fastback Only.

          Related Mustang Categories