Steeda Mustang Sport Lowering Springs - Progressive GT / V6 (2015-2020)

Steeda Mustang Sport Lowering Springs - Progressive GT / V6 (2015-2020)
Steeda 2015-2017 Ford Mustang GT S550 Progressive Springs
$80.00 (25%)

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Steeda Sales & Service, LLC
555 8210

Suggested Mods


Steeda Progressive Springs. Steeda springs start out at a milder rate and then transition or progress into a firmer rate. During normal street driving your Mustang will remain in that milder rate resulting in great ride quality, but on the race track, the springs transition into the firmer rates. Specifically, the front spring rates range from 145 lbs up to 225 lbs. While the rears range from 525 to 820 lbs.

Better Handling. As you get into sportier driving and brake hard the car wants to pitch, these progressive springs will help prevent nose-dive. Likewise, on corner driving they will resist body roll! So your Mustang will have great handling. Just as important, when you go to launch, the Mustang is not going to squat, it's going to set and it's going to go!

Car Stance. Steeda Mustang Sport Progressive Springs optimize the center of gravity and suspension geometry. An overall improvement of appearance, lowering the car just over 1" at the front and an inch at the back. So you get the perfect rake. These will clear stock wheels, or complement your S550, and add a set of 20" wheels.

Quality Engineering. Our experience and expertise in high performance street and racing suspension systems is second to none. Steeda progressive springs are all in house engineered and custom made to our exact specifications. They are developed using advanced proprietary CAD data and exclusive 3d modeling setting; all the while, manufactured under rigorous QS-9000 & ISO 9001 certifications.

  • LIFETIME warranty
  • Fits 2015+ Mustangs
  • Lowering 1.125" in front and 1" in rear
  • Clears 20" wheels
  • Great ride quality, improved aerodynamics and improved vehicle stance
  • Sharper steering response, improved vehicle handling and stability, noticeable reduction in nosedive
  • Fits coupe and convertible

CA Residents: Cancer and Reproductive Harm WARNING

Hi everybody Brian from Here today to talk to you about our Steeda S550 Mustang Sport Progressive Lowering Springs. Our Sport Progressive Springs are the most popular springs we offer for the S550 Mustang, and there's a great reason for this. It's because they are phenomenal for daily driven cars. Yet they increase performance. You may wonder how in the world is it that they do that. I'm going to tell you how we do that! Do to the progressive nature of the springs, they start out at a milder rate and then transition or progress into a firmer rate. What this means is, during normal street driving your going to remain in that milder rate so you have a great ride quality, but when you start to push the car some more it's going to transition into the firmer rates. Specifically, the front spring rates range from 145 pounds up to 225 pounds. While the rears range from 525 pounds up to 820 pounds. That's a nice wide range, a nice wide progression from one rate to the other. Now this is important because as you get into sporting driving, as you start to brake hard and the car wants to pitch, these will help prevent nosedive. Likewise, as you're going through the corners and the car wants to roll these will resist, body roll! So you're going to get great handling. Now just as importantly for our drag race guys, when you go to launch your car, the cars not going to squat, it's going to set and it's going to go! In addition to the performance gains, these will lower your car just over 1" at the front and an inch at the back. So you get the perfect rake. If you want to complement that add a set of 20" wheels. The springs will fit both coupes and convertibles. Great ride quality, improved aerodynamics and increased performance. It's no wonder these are our most popular springs. If you enjoyed the content of this video please click like and share it! Subscribe to our YouTube Channel to see more videos like this as well. Be sure and visit us at to learn more about these springs and many of our other great components that we offer for your Mustang and many other Ford vehicles. Don't forget to follow us on Social Media and most importantly, Have a Great Day!

Fitment & Features


Manufacturer: Steeda Autosports

Installation Information:

Level of Difficulty: Tech Recommended
Install Time: About 3 1/2 Hours
Tools Required: Basic Shop Tools, Spring compressor
Print Instructions:
Note: An alignment is highly recommended after installing lowering springs

Vehicle Fitment:

Fits Model Year: 2015, 2016, 2017, 2018, 2019, 2020

Customer Reviews

A++++++++......superb aftermarket addition to my GT PP. Love the look and love the ride. So much better then the stock performance package springs! See the pictures....don't she look pretty!
Did you find this helpful?  13 of 14 Found Helpful
Reviewed by: (Verified Buyer) Chris Dimock from South Carolina. on 3/29/2019
Lowering Springs Made the Difference
I have had Ford Racing "P" springs on 2 of my previous S197 Mustang GTs with good results. Originally I hoped to help the ride by putting just Steeda's Proaction shocks and struts on. This stopped the floating feeling, but the ride was still too stiff. Especially over the bumpy blacktop here in Michigan. So, I spoke with others on Mustang 6G and decided on using Steeda's progressive rate springs. At first I was skeptical, but when I removed my stock GT springs and tried to compress them by hand, they wouldn't budge. The Steeda springs actually had give in them, so I was optimistic. Let me tell you that it TOTALLY changed my Mustang GT. The ride is excellent. Banging on bumps gone. Other than the fact that the Mustang is a bit louder, if I am honest, it now rides better than my new Explorer. I also bought the thickest spring spacers Steeda makes for both the front and rear. So, my Mustang sits very close to stock ride heigth. I am a believer. I might try the Steeda sway bars, but I am going to enjoy the car for a while. It really rides good. Handling in curves excellent, too. You can do it yourself in about 4 hours.
Did you find this helpful?  9 of 9 Found Helpful
Reviewed by: (Verified Buyer) Robert Nelson from Oakland, Michigan. on 2/6/2019
Perfect stance for the GT
These springs combined with Steeda's 25mm spacers on all corners have completely changed the looks and improved the handling of my 2018 GT PP1.
Did you find this helpful?  12 of 15 Found Helpful
Reviewed by: (Verified Buyer) CHRIS SPERRY from Illinois. on 10/2/2018
Springs work as advertised
I drive my 2017 GT convertible daily, about 100 km per day, most on expressway and highway (though highway a bit rough in parts). I wanted to improve suspension performance over stock set up. Did quite a bit or research and went with these Steeda springs. Stance of the car much improved (OEM 19 inch wheels) - certainly got rid of that 'SUV look'. Handling is more direct and the car is flatter in corners. Ride still OEM firm over bumps. A few weeks after fitting springs I put on new rubber (Michelin Pilot Sport 4S) and the combination is much improved over original factory set up.
Did you find this helpful?  1 of 5 Found Helpful
Reviewed by: Tim Slattery from Murrumbateman, Australia. on 9/14/2018
Excellent springs
Drastically improved all aspects of performance. Of course the handling is much more planted down because of the lower center of gravity but the ride actually improved over the stock non pp set up. Everything is more controlled from reduced body roll to less brake dive. And you don't need to be throwing the car around to feel and appreciate these springs but also just casual driving will be more enjoyable. And lastly the car looks vastly better from an esthetic standpoint. The 1.125 drop in the front and 1.0 in the rear seems to be the perfect combination for looks and handling without slamming the car to the ground and causing other issues that go along with being too low for everyday driving. If your car does more than sit in the garage waiting for the weekend the Steeda Sport Progressive Springs are a great choice. You won't be disappointed!
Did you find this helpful?  12 of 13 Found Helpful
Reviewed by: Adam from Dallas Tx. on 7/18/2018
These springs are fantastic
Got these spring installed this week by the great staff at the Pompano location. These springs are fantastic. I've had linear springs on previous mustangs, so I was expecting these Progressive springs to be more comfortable compared to a linear spring. What I wasn't expecting was that I could BARELY feel the difference over the stock springs in terms of comfort. The car definitely feels more "planted" which improves handling, without giving up ride quality. If you want to lower your car to get rid of that wheel gap and maintain great ride quality, these are the springs are the way to go.
Did you find this helpful?  19 of 20 Found Helpful
Reviewed by: Steven C. from . on 4/12/2017
car handles much better and looks better
put these on my 2015 handles much better and looks of the best mods u can do for your car..thanks steeds for making such great performance parts for the mustang world!
Did you find this helpful?  3 of 4 Found Helpful
Reviewed by: Patrick Douglas from . on 4/10/2017
You will not be disappointed with these springs.
I have helped to install and driven in numerous S550s with these springs, and if you want a stock-like ride quality but improved handling using stock dampers, these are the spring to get. Misinformation perpetuated by the competition on forums will make you feel nervous about having a progressive spring, but the fact is numerous supercars and even race cars use progressive or dual rate springs. You will not be disappointed with these springs. The alternative from the competition, that taught a "superior" linear spring rate is a nice set of springs, but simply can't offer the ride quality and handling mix that these springs can offer. I know this because I've been in cars with the competition's spring, too. Nice ride, nice handling, but I liked these Steeda Progressive springs much more.
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Reviewed by: wildcatgoal from . on 3/25/2017
Great product
Great product with excellent ride quality!
Did you find this helpful?  3 of 4 Found Helpful
Reviewed by: B. Jones from . on 1/13/2017
Tracks like a go kart now
On my previously stock GT non-PP i had a odd sensation while cornering that could best be described as a "rubber-band" feeling. I believe it was compliance of the subframe bushings. It was unnerving. Felt like the start of the tires breaking loose - but it wasn't. I installed the Steeda rear IRS bushing support kit and the IRS braces and the sensation went away. Much improved cornering afterward. I was inspired by the improvement so I added the Steeda springs and swaybars. Tracks like a go kart now.
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Reviewed by: Larry H. from Arkansas. on 11/18/2016
Great mod
Installed the progressive springs with front and rear sway bar. Great mod. Wish this was on the car when I bought it. Great Job STEEDA!!!
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Reviewed by: William A. from California. on 9/22/2016
Handling fantastic
Their progressive lowering springs, g-trac brace and axle-back exhaust have this car running smooth as hell, handling fantastic and sounding like an exotic muscle car if that makes any sense.
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Reviewed by: Gregory W. from Texas. on 8/11/2016
Thanks for making great products
I get tons of complements on my car and wanted to say thanks! I have used your springs on my 2013 mustang GT and when I bought my 16 the lowering springs was my first purchase! I also added the g trac brace and will be purchasing more suspension parts soon! Thanks for making great products.
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Reviewed by: Tyler B. from Mississippi. on 6/15/2016
The car just feels more planted to the road
I've noticed that nose dive on heavy braking is about non-existent now. And while I haven't had a chance to push her hard in the curves, the handling seems to be better. The car just feels more planted to the road.
Did you find this helpful?  3 of 3 Found Helpful
Reviewed by: Dustin G. from Georgia. on 5/7/2016
The car feels so much more planted to the road
This is the first time I've ever done anything suspension wise to my car, David @ Steeda helped out greatly with all my questions as well as getting me setup with an install at their Pompano location with a tour of some badass shop cars and their facility. Everyone @ Steeda - David, Patrick, Matt were great and made sure I was happy with everything. I can't recommend their shop enough to anyone in the area and Matt did an awesome job with everything on the install, even tack welded my Gibson exhaust and turned their clamps a bit to help out. I won't have a chance to do pics this weekend of my spot on the beach as that will give a good before/after comparison when I put them together. The car feels so much more planted to the road, even just turning out of their parking lot I could tell everything felt more connected and precise to what I was telling the car to do. It basically now goes where I want it instead of reacting to what I'm asking it to do if that makes any sense at all? I had some open highway and did a little bit of careful back and forth in my lane and I felt completely planted and not bouncing around back and forth in my seat. Almost found myself doing slalom in between some construction barrels but given how my morning went I decided against it. The springs give the car the look I wanted and make the Vossen wheels look that much better. Nice tighter rebound than stock PP springs and reduces the overall bouncy ness on some of those highway stretches where it feels like you're hitting hydraulics for a half a mile. Also any bridges or overpasses with rough spots where you enter/leave them were solid. The MT-82 bushing insert is noticeable and I had much easier downshifts for highway passes on the way home, feels like a much more solid shift that I had to get a bit used to in a good way. I didn't do any hard launches or try to break the rear end loose at all since I was just getting used to it, will report back later on that. I can't really report on some of the individual IRS components since they all went in at the same time, but I am noticing a slight (and I mean slight) gear wine from the rear with the Black bushings. It's only really noticeable if you try to make it happen and barely push the gas at cruising speed. Nothing I'm worried about and after 4 hours of driving it home windows down and up for a few sprinkles it does not bother at me all. It's not all the time either or in any specific gear so no biggie as far as I'm concerned.
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Reviewed by: Frank L. from Florida. on 3/27/2016
The car now handles like it should have from the factory
I had the Progressives installed yesterday, took the tech f o r e v e r! But patience is a virtue as they say...The drop is puurfect IMO! Not too low but definitely gives the car "the look" I wanted. I had an opportunity to see just how the Springs perform this morning, the roads I take to work are windy, curvy, hilly, an enthusiast's dream. The car now handles like it should have from the factory, I couldn't be more pleased.
Did you find this helpful?  3 of 3 Found Helpful
Reviewed by: Jose C. from Georgia. on 3/19/2016
Love them
I just installed the Steeda Progressive springs a few weeks ago and love them. The car rides so much better and even handles better. Improvement all the way around. Once you go Steeda you never go back!
Did you find this helpful?  2 of 2 Found Helpful
Reviewed by: Adrian R. from Florida. on 2/25/2016
Riding great so far, better than stock!
Finally got my Steeda progressive springs installed. Riding great so far, better than stock I would say, and the stance is sexy. Shout out to David for the help
Did you find this helpful?  2 of 3 Found Helpful
Reviewed by: Andrew G. from Arizona. on 1/24/2016
The handling of the car is just perfect
I am beyond please with everything that Jamie did for the installation and alignment. David was an absolute pleasure to deal with in buying and setting up the appointment for me. Everyone at Steeda has been a joy. The car has been completely transformed. The ride quality with the progressive springs is 3 times better vs. the stock GTPP springs. The handling of the car is just perfect. It is so, so flat now when pushing the car hard in any type of turn. Brake dive has been greatly reduced. I would say by 80-90%. I can mash the brake pedal and it just stops, so tried and true. The front-end barely dives at all. This is from 70-75mph and just mashing the pedal. It truly begs for more speed when entering turns. Of course, this only on roads and not a race track or autoX course. Wheel hop has been greatly reduced. I still have a couple more parts to order to virtually eliminate it all together and those will be ordered at a later date. Shifting hard to 2nd gear, I just now get wheel spin and no hop. Only time I get a little hop is via a hard launch. But again, it is greatly reduced and doesn't happen all the time. The car is so quiet, no increase in NVH in anyway. This has been some of the best money I have ever spent on any car mods, PERIOD. Their parts deliver what they promise and produce outstanding results. Anyone on the fence, I highly recommend you go ahead and purchase their "stuff".
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Reviewed by: Matt S. from Georgia. on 1/5/2016
I am a Steeda believer
The car is a totally different handling car. Took the wife for a ride today and she said it is smoother than before. Much less bouncy. That is good news to me. Cause if the wife is happy I am happy. But I will say that these mods have really changed my confidence in the car. I had one little 30mile spirited section with S curves on my way home that normally when they say 45mph.. you can take them at 55mph... I took them at 70mph and the car was just planted solid. No roll, no rebound and no breaking loose on the rear when I accelerated from the apex. It just transitioned smoothly and predictably. Now the only thing the wife did notice was the gear whine. Yes the Red differential bushing will cause some gear whine, but I have been told that replacing the stock gear oil in the rear end will help quiet that noise down. We will see as I will most likely change mine out here in the next week. Amsoil or Royal Purple is what a lot of people recommended. So, all in all, if someone is on the fence about these suspension upgrades, just do it. The guys at Steeda are top notch and know their stuff. Almost all of them have Mustangs and the owner even races them. A final shout out to [email protected] What a great help he was. He made sure everything was ready and there, his recommendations were spot on. David, again, Thank you man. I can hardly wait for the next batch of Steeda goodies come out.. Count me in already. I am a Steeda believer.
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Reviewed by: Brian G. from California. on 11/13/2015
GTPP 5.0 - my bounce is virtually gone
I also have a nearly loaded GTPP 5.0 and my bounce is virtually gone. My wife now says the car in enjoyable to ride in. The springs and sway bars work in tandem to reduce/eliminate the bounce. I have put my car through some pretty bouncy roads and a few tight twisty roads and the thing rides like it is on rails. If there is any roll I am not feeling it and bounce, gone. The one set of railroad tracks near our home would cause the car to bounce violently. Since putting the springs and sways on, no bounce, just a smooth pass over them. And last you are right, getting the wife's approval has made the next mods easier to justify. Enjoy the ride!
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Reviewed by: Tyler D. from California. on 10/13/2015
Steeda got it right
I had my progressive springs and well, many other suspension goodies installed last Friday in Valdosta and I can tell the car rides like it is on rails now. Even with the rough roads here in South Carolina I haven't come close to bottoming out or needing the bump stops. Again all I can say is Steeda got it right.
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Reviewed by: Nick K. from South Carolina. on 9/2/2015
Crappy instructions
Would give you five stars if it were not for the crappy instructions. You need to add that the front calipers must be removed to knock out the splined bolts that go through the spindle. There is not any shop manual, you need to provide all the torque settings.
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Reviewed by: Duke A. from Florida. on 7/4/2015
It only took the drive back from the shop
Just had Steeda's progressive springs installed in my GT. It only took the drive back from the shop to realize the ride quality and handling improvements!
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by: John J. from Georgia. on 6/10/2015
wheel hop on my car is 100% eliminated
A couple of months ago, I started looking into overhauling the suspension of my 2015 GT PP. Up to that point, I had put about 7000 miles on my Mustang which allowed me to get a good sense of the issues with the IRS and overall suspension in stock form. Specifically, I wanted to stiffen up the entire rear end and eliminate the dreaded wheel hop while keeping NVH as close to the stock levels as possible. I also decided to replace the stock PP springs and sway bars in order to improve the overall handing, reduce body roll/brake dive and get rid of the bouncy ride. After going through a ton of feedback on the various solutions from the aftermarket (a lot of which came from fellow mustang6g members), I decided to go with Steeda. Below are the parts I chose to go with. Differential Bushings (Red/Street) Subframe Alignment Kit Subframe Bushing Support Vertical Links Rear Toe Link Subframe Suport Braces Linear Sport Springs Front and Rear Sway Bars and Billet Sway Bar Mounts Bumpsteer Kit I already had the Extreme G-Trak Brace installed. Now to the most important part...the results. The handling of the car is on a whole different level after the suspension upgrades. Minimal pitch and roll during braking, turns and transitions. Overall, the entire car is very tight with much better turn in. As expected, the biggest improvement is the rear end. The power delivery through the IRS is fantastic. The wheel hop on my car is 100% eliminated. The rear tires feel as if they are glued to the ground. Coming out of corners, I am able to get on the throttle earlier and more aggressively without any drama. In terms of NVH, I hear some gear whine in 6th gear under minimal throttle between 75 and 80mph (windows closed/stereo off) as a result of the differential bushing inserts. Apart from that, I can't tell a difference compared to stock. Even the ride quality feels great. My fiancé couldn't tell that anything had been done to the car. Overall, I am very happy with the results. Props to Steeda for the excellent work they have done. In the near future, I am looking forward to adding a quality set of performance shocks/struts and hitting the road course.
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Reviewed by: Scott A. from Georgia. on 5/7/2015
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