(approx) 4 Hours
Mechanical expertise or professional installation required.
$179.99 (kit)FREE Shipping
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.
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Features, Description, Reviews, Q&A, Specs & Installation
Fitment: 2015 2016 2017 2018 2019 2020 Details
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March 11, 2020
These SR performance springs are phenomenal, even better when paired with RTR suspension components. My car plants firmly, is at least an inch lower and still maintains a ride quality that doesn’t bust your back or jar your teeth out. Get some!Helpful (0)
February 20, 2020
Looks and feels great
Best Buy. The SR performance springs are amazing, perfect drop and handles great.Helpful (0)
February 17, 2020
Got the part i needed
Great product highly recommended!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Helpful (0)
February 11, 2020
I installed these in my garage using a floor jack and 2 jack stands. I took my time because it was the 1st time swapping springs. I took the front coilovers to a friends garage to compress springs, once they were swapped everything was simple. The rear was easy too. Take your time if its the first time doing this. Well worth the results. Along the BMR 4point chassis brace, Steeda jacking rails, my 2016 Convertible is handling 1000 times better.Helpful (0)
January 29, 2020
Just as described. Great customer service. Product matched the description and dropped it the perfect amountHelpful (0)
January 28, 2020
Definitely worth it
I was a little worried before I bought these because they were cheap, but they turned out to be great.! Lowered the car evenly in the front and back and eliminated the ridiculous wheel gap. Only problem I had afterwards was a loud creaking sound going over speed bumps and dips in the road, but this was EASILY fixed with BMR adjustable front sway bar end links. Just make sure to tighten them with the weight on the suspension, not while in the air.Helpful (1)
January 22, 2020
It's one of the best part I ever bought for my car drives excellentHelpful (0)
December 26, 2019
I run on 275/35/20 front and 295/35/20 rear. Dropped the car down by an inch and looks absolutely amazing. Ride is more softer and handles betterHelpful (0)
October 13, 2019
Perfect stance, much improved ride
I was just looking to improve the stance and handling of my ‘18 GT. These springs are perfect. Still clears steep driveways and speed bumps, while vastly improving the the look and handling. Paired these with 25 MM spacers and the handling dynamics have been transformed. Cannot recommend enough especially for the price.Helpful (2)
October 03, 2019
Exactly the inch drop I need to reduce wheel gap.Smooth ride like oemHelpful (1)
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.
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.
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.
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
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!
Yes, that is an acceptable install method.
The SR Performance Lowering Springs will work with your build just fine and will not rub. Now going on over bumps or potholes we would recommend being cautious.
The SR Performance Lowering Springs will have a stiffer spring rate which will give up ride quality for handling over the OEM Performance Pack springs. Additionally it should be noted that OEM Performance Pack cars do sit lower than a non Performance Pack cars so the full 1.5" of lowering would not be seen on cars equipped with the Performance Pack.
With the SR Performance Lowering Springs and 20x10 Niche Surge wheels with 305's in the rear, fitment will be tight, but should not rub.
Hello! The Spring Rate for the front of the SR Performance Lowering Springs is 185-275 lb/in. The rear spring rate is 800-880 lb/in.
It would be difficult to say if the installation of the SR Performance Lowering Springs and a one inch spacer would cause rubbing without additional information such as the offset of the wheels. The best way to see if there is sufficient space would be the measure the drop in height from where your wheels sit now, and also measure an inch from the wheel outward. If you perhaps would be able reach out to us via phone or email with further details, we would be more than happy to take a further look into the issue at hand.
We highly recommend getting an alignment any time you change the suspension on your car. This will ensure there is no unnecessary wear on your tires or other suspension components.
There is a possibility the front tires will rub. We can guarantee fitment as large as 275 up front with up to a 2 inch drop, which isn't to say a 285 definitely won't fit, we just can't guarantee it would. I would suggest measuring to be safe. Rear, you can go as large as 305s up to 2 inches so you're good to go there.
There isn't really a "best" size. The biggest you can fit in the rear will be a 305, the biggest up front will be a 275.
We do not have this information on hand, but can indeed lend the spring rate below: Front: 185-275 lb/in.Rear: 800-880 lb/in.
(approx) 4 Hours
Mechanical expertise or professional installation required.
What's in the Box
|Spring Rate:||Front: 185-275 lb/in. |
Rear: 800-880 lb/in.
|Progressive or Standard:||Progressive||Estimated Drop:|
1.0"F / 1.0" R