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ST Suspension Coil Over Kit (05-14 GT, V6)

Market Price $1,349.99 You Save 15% ($202.50)
Our Price

$1,147.49 (kit)

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  • Item 384803
  • MPN# 90323

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Features, Video & Details

  • Superior Driving Performance
  • Improved Handling
  • Lowers Center of Gravity
  • Adjustable Ride Height
  • Front Drop: 1.2" to 2.4"
  • Rear Drop: 1.4" to 2.2"
  • Compatible with Coupe and Convertible
  • Fits 2005-2014 V6, GT and Bullitt Mustangs

Review & Installation Video

Review & Install Video

Hey, guys. Stephanie with AmericanMuscle.com here with my review of the ST Suspension Coil Over Kit available for all 1979 to 2014 GT and V6 Mustangs. The ST Suspension Coil Overs are going to be for the Mustang owners out there that are looking to get away from the fixed drop of a lowering spring, and for someone that's looking for height adjustability benefits instead. Typically, a lowering spring is going to be best for someone that's looking to simply lower their car and doesn't really mind a stiffer ride. The spring rate in the lowering spring is not going to be as aggressive as in a coil over because they're mostly designed to be used with stock shocks. Coil overs like these, on the other hand, come with shocks that are set to take the abuse of a lowered car, and these are going to be designed to work with a coil over spring rates. So the first thing is, ST makes kits for a large range of Mustangs. We're talking from '79 all the way to 2014 and we're going to be discussing all of these kits today. If we wanna talk about the height adjustability that the kit offers, which I think is one of the biggest pluses when choosing a coil over setup as opposed to the traditional aftermarket spring setup, we're going to see that the ST kit offers anywhere from 1.2 inches to 2.5 inches for the front depending on which generation Mustang you're shopping for. We all know that the gens are obviously set up differently and on different chassis, so the kits are going to change slightly depending on the car, but the rear-drops range from just less than an inch all the way to two-and-a-half inches. To be more exact, usually for any particular gen, the kit is going to offer about an inch range of both the front and rear view to play around with. This means that you can go anywhere from just below stock height, to tuck and wheel height, and anywhere in between, depending on what you're looking for here. So the kit is going to include two front coil overs, two rear shocks, two rear springs, bump stops and your spanner wrenches. The spanner wrenches are going to be your way to adjust your coil over height. Now this is superior to your other type of coil over where you will literally need to turn spring first. You can press the spring again the top pad in order to change ride height. The problem with this is it puts preload on the springs, and you're already setting yourself up to lose some handling performance. Getting into some of the specifics about the construction here. The front coil overs have heavily galvanized steel with zinc plated front housings. Then these also have self-centering dust boots and those bump stops that I mentioned earlier. This kit having bump stops is nice because the bump stop is going to give another level of protection from bottoming control when you're playing around with the max level of suspension travel that's available. Now these coil overs don't have dampening adjustments like some other options do out there, but that would be the next step up on the coil over scale. This kit here is more of a high-end level one kit on the coil over scale. There are some options out there that allow you to adjust dampening, which is the compression and rebound of the shock, or basically to kind of oversimplify this, adjusting the dampening will allow you to soften or stiffen the ride depending on what you want out of your setup. And full disclosure here guys, ST is actually working with KW on these coil overs, which means that these are engineered by KW, and they're really going to be what I consider top quality. KW has a lot of proven testing and manufacturing behind their products, and a lot of big names support and run KW products so you know this is a high-quality kit. So with that said, when we start to look at price, you're going to notice that as far as kits that are on the same level as this kit right here, meaning they do not offer dampening adjustability or external reservoirs, this kit's actually a little bit more expensive. For the Fox-bodied '04 guys, you're looking at right about $1700, while the S197 guys are looking at just under $1200. At the end of the day, it's pretty typical to pay for quality and coil overs can be an investment depending on what you want out of your setup. If you're looking for top quality and performance or just looking to get your car lower than some springs will allow. This is a bolt-on kit, guys, and will work for both coupe and convertible models. There's no permanent modification necessary, but there is a fair amount of work involved with the install, a few hours or so. So I'll call this a two out of three wrenches on our scale when we look at overall difficulty. The work is straightforward and ultimately you're going to need a decent socket set, a jack and jack stands, or a lift to get the job done. And again, it's nothing too hard but just a little time consuming. You have to break down everything like your calipers and rotors and get your old shock and strut and spring setup out, then you've got to get your new setup in. And don't forget, you might need a little extra time to get the right height dialed into your liking. You may end up having to do a few adjustments to get your car to be where you want it to be, and then you also have to make sure that it's even on each side. You're going to wanna make sure that you're setting it up for whatever you plan on doing with your car and for the performance that you want out of it, whether it be the drag strip, a cornering beast, or just a low rider in general. And keep in mind that after tweaking this much of your cars suspension and ride height, you're probably gonna need a good alignment to make sure everything looks good and is still in spec. Okay, so overall the ST Suspension Coil Over kit is a high-quality kit that's going to offer a lot of room to adjust ride height. And even though you aren't looking at dampening adjustability here, this kit is still going to be top quality for its grouping. It's engineered by KW and has been extensible tested. But as always, don't just take my word for it, especially when it comes to something of this nature. I'll always encourage you to check out more online for yourself and look at your other options that are out there. I'm Stephanie, and for all things Mustang, keep it right here at AmericanMuscle.com.

Superior Handling. Improve the overall driving experience of your 2005-2014 Mustang by installing this ST Suspensions Coil-Over Kit. Customize your ride height up to 2.4" without sacrificing any safety or functionality and give your S197 the ultimate in style, performance and handling all in one.

Adjustable Ride Height. Lower your Mustang's stance and center of gravity from 1.2" to 2.4" up front and 1.4" to 2.2" out back, for improved cornering and a muscular look on the street with this ST Suspensions Coil Over Kit.

High Performance Components. ST Suspensions Coil Over Kit includes heavy galvanized steel Front Coil Overs with zinc-plated strut housings, Rear Shocks and Springs, self centering dust boots, bump stops and a spanner wrench for a complete installation. These high quality kits have been precision engineered and thoroughly road tested to Germany's TUVs highest standards.

Application. This ST Suspensions Coil Over Kit is specifically designed for use on 2005-2014 Coupe and Convertible Mustangs, including the V6, GT and Bullitt models.

Fitment: 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Details

What's in the Box
  • (2) Front Coil Overs
  • (2) Rear Shocks
  • (2) Rear Springs
  • (2) Bump Stops
  • (1) Spanner Wrench
Installation Info
Tech Specs
Shock Specifications
Placement: Struts - Front
Shocks - Rear
Adjustable: Height Adjustable
Year: 2005-2014 Model: V6, GT, Bullitt
Manufacturer: ST Suspensions Material: Steel

Springs Specifications
Spring Rate: N/A Usage: Street/Track
Progressive or Standard: Progressive Estimated Drop: 1.2" - 2.4" Front
1.4" - 2.2" Rear
Will it fit my Mustang?
  • GT - 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
  • V6 - 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
  • Bullitt - 08, 09

Most Helpful Reviews

5/5
ST coilovers

Pretty good. Drops it Perfectly in the front, maybe a little more in the back would look better. But still closes that gap nicely. Ride is bouncey. It's nice though, handles much nicer than what I exp ...

Read More
Helpful (1)

5/5
Nice upgrade

I installed these on my super charged 2008 bullitt , didn't take long to install i would suggest to just spend the extra 100 bucks and get new gt500 camber plates that way you dont have to dissable your ...

Read More
Helpful (1)

Overall Rating 5 out of 5 stars
Read All 5 Reviews

Customer Photos (2) Submit Your Photo

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2 Questions / 2 Answers

Ask a Question

I lowered my car with the SR lowering kit and my ride is really rough. If I add these coil overs would it help soften up my ride or would it make it even harder?

Faviano1

  • This coil over kit allows you to adjust the ride height. It may help with the comfort of the ride. Though, the lower the car is, the more stiff the ride will be. A stiffer ride improves the handling of the vehicle.

    AshleyK

Helpful (0)

Are the front struct come with this kit same as ST SUSPENSION SPORT SHOCK STRUT KIT (05-14 GT, V6) that we can find in AM, apart from the colour? http://www.americanmuscle.com/stsuspensions-sport-shocks-struts-0514.html?source=igodigital

Kwun

  • The ST Suspension Coil Over Kit uses different struts from the ST Suspension Sport Shock & Strut Kit. The coil over kit, is adjustable is ride height, and the spring seat diameter is smaller. Additionally, the struts in each kit are valved for different spring rates.

    AMJEFF

Helpful (0)

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Customer Reviews (5) Write a Review

Overall Rating 5.0

out of 5 stars

Installation Time:Afternoon

  • Handling Improvement 4.8 4.8
  • Ride Quality 4 4
  • Appearance 4.6 4.6
  • Bang For Your Buck 4.6 4.6



  • 5/5

    Installation Time: Afternoon

    April 14, 2017

    ST coilovers

    Pretty good. Drops it Perfectly in the front, maybe a little more in the back would look better. But still closes that gap nicely. Ride is bouncey. It's nice though, handles much nicer than what I expected

    LightPoleMagnet

    Year: 2014 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    May 22, 2016

    Nice upgrade

    I installed these on my super charged 2008 bullitt , didn't take long to install i would suggest to just spend the extra 100 bucks and get new gt500 camber plates that way you dont have to dissable your old struts just throw the new camber plates on new struts and install besides stock camber plates go bad eventually better to replace now than later , rear springs are adjusted to the lowest as can be and its not really lower then the ford racing springs i took out . So if your looking for that slammed look dont get these .. Everything was easy took only 2 hours to install and adjust to my liking suspension feels great !! Not to bumpy or soft its perfect **** special note you will need a new nut n bolt to attach break line to strut , the old struts had a threaded hole in it that the bolt screwed through . New struts dont have any threads not sure if mine was a defective or not but i just through 2 new bolts and nuts ..

    drkbullit

    Year: 2008 Submodel: Bullitt

    Helpful (1)

  • 5/5

    Installation Time: Full Day

    April 12, 2016

    Excellent Coil Overs

    I installed these on my 2012 GT and noticed a great difference. Needed an alignment after installation,

    Zsm150

    Year: 2012 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    February 21, 2016

    Best Performance Bang for the buck coilover!

    I can't say how happy I am I went with these coilovers. The car is like a whole different sports car. It really shows how sloppy the stock suspension was, and that's coming from the Performance pack v6 mustang (gt suspension). I wish it coculd go just a little lower in the back, but other than that its great. Only thing is you feel the bumps a bit more but its not unbearable for me in south fl

    Alex

    Year: 2012 Submodel: V6 Tamarac, FL

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    January 01, 2016

    Day and Night

    Let me tell you a story of a little stang. This little stang was a bit to high and not very funny to ride around corners. so the little stang got a present for his birthday. The handling is unbelivebel. With the old suspension i had to go with 30mph around heavy corners. and now i go up to 65. Dont be an idiot and just get some springs. Get the whole package. Befor my stang was like a ship, rolling and jumping, you maybe know thaat when you are bracking hard and your nose is going all the way down. now it only goes down a few cm. When you love to kick your pony and be fast in corners, get this, GET IT. My bro has a Nissan 370 and he cant get away evan up hill in switzerland, and we know how a windy street looks like. Again, GET IT.

    Blackbird29

    Year: 2013 Submodel: V6 Winterthur ZH

    Helpful (1)

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