Hey guys, Stephanie with americanmuscle.com, here with a review and install of the BMR Drag Lowering Springs for 2015 and newer Mustangs. We're gonna be talking about a few different things with these springs, but mostly we'll talk about what you can expect from these springs in both the performance and looks categories, and we're also gonna talk about the install as well. I'll talk more about the install later, but you're looking at a two out of three wrenches in the difficulty meter. The BMR Drag Lowering Springs are gonna be a good option for the S550 owners out there who are looking for a drag spring that's gonna help transfer weight for better acceleration. Lowering springs have a big impact on both the looks and handling of these cars, and these springs are a linear spring that are gonna offer a pretty big drop. These springs will drop the S550 about 1.2 inches in the front of the car and 0.5 inches in the rear. It may not sound like it, but this is a good amount of drop for the S550. And even though these springs aren't as much about the looks improvements as they are about performance, you're still gonna be gaining in the looks area. Depending on your wheel and tire setup, this drop is going to eliminate a lot of the wheel gap that the car has from the factory, and it's gonna leave the car sitting a little bit above the tires. But of course, that can change depending on what size wheels you're running.
Keeping on track with the subject of the drop that these springs offer, keep in mind that a one inch drop, or just under a one inch drop is pretty standard across the board for this year range. So the 1.2-inch and 0.5-inch drop is gonna make for a change in the car's appearance as well as give you those performance changes. And you're also lowering the car's center of gravity, so you're gonna see some handling benefits as well. But the main purpose of these springs is for straight line acceleration, so these focus on weight transfer to help with traction. Now, none of this means that these springs won't work on a daily-driven car. They'll work just fine. These springs are also still gonna work with both the factory wheels and the preconfigured wheel and tire kits that are on the site. When it comes to shopping for a set of springs, it really all comes down to your personal preference and what you want out of the springs. These springs were specifically designed to be a drag spring, so you have to keep that in mind if you've got a street car and you're worried about ride quality.
Now with that being said, I wanna mention that these are linear springs. These are not the progressive rate springs that we tend to see that are gonna change as you drive. Linear springs have a constant rate of force per inch, so they have one defined spring rate and that's it. So basically as the load on the spring increases, the spring compresses an amount directly proportional to that load, and this makes a linear spring more performance-oriented than a progressive rate spring. Progressive rate springs, or variable rate springs, have low initial spring rates that increase as the spring is compressed, which makes for a softer and smoother ride quality.
I do wanna say that a lot of times when you're shopping for lowering springs, you're also shopping for things like adjustable caster camber plates and a new set of both shocks and struts. In this case, I wouldn't say that caster camber plates are necessarily required, but I will say that a one and a half inch drop is about the limit of where you'd need a set of adjustable caster camber plates in order to get your alignment within spec. It's gonna be close, so a set of caster camber plates wouldn't be a bad idea at all. At the end of the day, it never hurts to have caster camber plates, so if you've got the extra cash, I'd say go ahead. But in all reality, you will be able to get away without picking up a set.
As far as the shocks and struts, this goes back to the drop and the performance that you want out of the car. I'd say that you can get away with the factory shocks and struts in this case, due to the fact that you probably don't have any miles on your components at this time. But if you're really looking for drag strip performance, it's always a good idea to pick up a set of adjustable rear shocks to help with that weight transfer and your traction.
When it comes to price, it all depends on how you buy these springs. BMR offers a full set for between $200 and $300, or you can purchase just the front or just the rear springs. The front springs will cost just over $100, and the rears will cost right about $150. So you do have some options there. Now, as far as the price for the set of springs goes, these springs are gonna be one of the middle-of-the-road options. They're not the most expensive, but they're not the least expensive either. But if you're just looking to get your car lower and you aren't concerned with ride quality, there are some other options on the site that cost a little less and will get you where you need to be.
So the install here is gonna take about four hours. I'm gonna call it a two out of three wrenches on the scale. You will need some knowledge to complete this install, so I'd recommend having a knowledgeable helping hand or taking to this to a shop for the install, especially since it's always a good idea to get an alignment after the install anyway. 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. 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, the brakes, the ABS lines will need to be moved out of the way so you can pull the assemblies outta 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's where things are little bit different, but it's nothing crazy. Essentially, the IRS upframe [SP] 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 were uninstalled. There's no surprises there. And after the new springs are in, you can begin reinstalling the shocks and everything else that you want installed, 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 BMR Drag Lowering Springs are a linear spring with an aggressive drop and improvements in handling to make for a car that feels track-ready. They'll drop the car 1.2 inches in the front and 0.5 inches in the rear, and they're designed to give better weight transfer for better traction. The springs are not difficult to install, they're at the middle of the pack as far as pricing goes, and you can check them out more online right here at americanmuscle.com.
Drag Strip Handling.
Are you part of the drag racing crowd that is looking for great weight transfer and the ultimate in straight-line acceleration? Then you need to install a set of BMR Drag Lowering Springs on your S550 GT Mustang. These BMR Lowering Springs feature a linear spring rate that provide maximum traction to the drive wheels. The results are lower 1/4-mile Elapsed Times (ET´s) down the strip.
Sleek Muscle Car Stance.
Not only does a set of BMR Springs improve the handling performance of your Mustang, but they also improve its overall appearance. By lowering the ride height approximately 1.2" up front and 0.5" in the rear these BMR Performance springs will eliminate that huge tire to fender gap, for a sleek muscle car stance.
Designed and manufactured in the USA, these BMR Lowering Springs are CNC cold wound from chrome silicon high-tensile spring wire. To guarantee that their springs will not sag over time, BMR fully compresses every spring twice to permanently set the spring. To eliminate the stresses induced during the winding process BMR springs are stress-relieved at 750 degrees F. Shot-peening is then used to eliminate any residual surface stresses. As the final step every spring is compressed and tested allowing BMR to offer a Lifetime Warranty against spring sag.
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.
Choice of Options.
BMR Drag Lowering Springs are available as a pair of two Front Springs, a pair of Two Rear Springs or as a complete set of four. Please select from the options listed above.
These BMR Drag Lowering Springs are specifically designed for use on 2015 to 2018 GT Mustang Coupes or Convertibles equipped with independent rear suspension (IRS). Not
intended for use on V6 or EcoBoost models.Technical Note.
The Springs are not
compatible on vehicles equipped with the MagneRide Suspension.
- What's in the Box
Complete Kit Option
- (2) Front Springs
- (2) Rear Springs
Front Only Option
Rear Only Option
- Installation Info
Installation Time: (approx) 4 Hours
Difficulty Level:Mechanical expertise or professional installation required.
- Tech Specs
||Front: 150 lb/in.
Rear: 800 lb/in.
|Progressive or Standard:
1.2"F / 0.5" R
- Will it fit my Mustang?