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.
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.
CA Residents: Warning: California's Proposition 65
- What's in the Box
- Installation Info
Installation Time: (approx) 4 Hours
Difficulty Level:Mechanical expertise or professional installation required.
- Tech Specs
||2015-2017 GT, V6 & EcoBoost
||Fastback/Coupe & Convertible|
|Progressive or Standard:
1.125" F / 1" R
- Will it fit my Mustang?
- Bullitt - 19
- EcoBoost - 15, 16, 17, 18, 19
- GT - 15, 16, 17, 18, 19
- V6 - 15, 16, 17