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KONI STR.T Shock, Strut & Eibach Pro-Kit Lowering Spring Kit (11-14 GT, V6)

Item 390837
Market Price $794.99 You Save 12% ($91.91)
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$703.08 (kit)

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      Review & Installation Video

      Hey, guys, Stephanie with, here with the review and install of this handling pack that pairs KONI's STR.T Shocks and Struts with Eibach's Pro-Kit Lowering Springs for 2011 to '14 GTs, V6s, and Boss Mustangs.In this video, we're gonna talk about a few different topics when it come to this handling kit. We're gonna talk about the performance and handling benefits of the kit, and, of course, we'll cover the install. I'll go over the install in more detail later on, but I can tell you right now that the install for this kit is easy and straightforward, but it is a little bit of work. So I'm gonna call it a two out of three wrenches in the difficulty meter. The KONI STR.T Shock and Strut, and Eibach Pro-Kit handling package is going to be for those of you out there that are looking for a handling package that'll give you an entry level upgrade with non-adjustable shocks and struts and a set of progressive springs that'll drop the car up to an inch in the front and one and half inches in the rear. This kit is perfect for those daily drivers that are performance-minded and want a little bit more from their handling.For guys who are looking for more of an upgrade or to upgrade maybe some other handling components, there are some other kits that you can check out that will give you a little bit more depending on what you're looking for here. We do have a couple of things to talk about here since we are looking at a big kit, but the first thing that I wanted to talk about is the KONI STR.T Shocks and Struts. These are considered the entry level option, and I mean entry level in both price and performance. These are KONI Orange, which is one step below the KONI Sports or the KONI Yellows. Even though this is entry level kit, you are getting a bump in performance over your stock components. Now, while these are performance-oriented, you aren't getting the most performance-based kit with these here. These are non-adjustable as opposed to the adjustable options that you have. That means that they have a fixed rate of dampening, and these have the standard twin-tube gas-pressure design and steel body. Well, like I said, these are still an upgrade over the factory shocks and struts.If we move on to the Eibach springs, these are the Pro-Kit springs, and they are a progressive spring, which is gonna make them a good option for the street cars that are out there. The springs do offer a range of drop depending on your exact model. If you have a GT, no matter if it's a coupe or convertible, you're looking at a drop of one inch in the front and one and half inches in the rear. The V6s can expect 0.8 in the front and 1.2 in the rear, and the Boss Mustangs can expect 0.6 in the front and one inch in the rear. I will say that it's normal to have a settling period with lowering springs. So if the initial drop is less than what you'd expected to be, just know that these springs will settle a bit with some time, and the car will drop a little bit lower.The springs, and shocks, and struts work hand in hand together. And, normally, if you're upgrading one, you are upgrading the other. So having a kit like this one here, with two well-known brand names, is always a plus. And any quick research on the forms will tell you that this kit is a popular kit and that these things really do work well together. If you wanna take things a step further, you can always upgrade your strut mounts, and you'll have a car that feels totally different. As far as price, you're looking at spending under $750 for this kit. You do save a little bit by purchasing these together in a kit, but you can always buy the parts separately as well if you don't wanna spend everything all at once. And this is price lower than the kit with the adjustable shocks and struts, but keep in mind that this is your base upgrade. There are a ton of different handling kits that offer different components depending on what you're looking for. So if you need something more than

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Complete Suspension Kit
      • Improves Handling Performance
      • Aggressive Muscular Stance
      • Front Drop Up to 1"; Rear Drop Up to 1.5"
      • Progressive Spring Rate
      • Non-Adjustable Shocks and Struts
      • Twin-Tube Gas Pressure Design
      • Does Not Include Bushings
      • Fits 2011-2014 GT, V6, and BOSS Mustangs


      Improved Performance. Give your S197 Mustang a suspension upgrade and make your next drive exhilarating. Tighter steering, sportier handling and a more aggressive appearance are all yours with the KONI STR.T & Eibach Pro-Kit. The set includes KONI STR.T Street Front Struts and Rear Shocks as well as progressive rate Eibach Lowering Springs.

      Full Handling Kit. KONI's STR.T & Eibach Pro-Kit is the perfect starting point for the budget-conscious driving enthusiast. The entry-level STR.T Series Shocks and Struts from KONI offer the superb engineering and workmanship that KONI is known for, but in a design that makes for a wallet-friendly price point. The Pro-Kit Lowering Springs by Eibach provide a nice drop that improves overall stance without the harsh ride some other springs provide. Bundled together, the combo is a great value for daily drivers and performance minded folks alike. The STR.T Shocks will require bushings which are sold separately.

      Quality Construction. Complete with a gas pressurized twin-tube design, the KONI STR.T Shocks and Struts feature a durable orange finish and a larger diameter piston for optimum street performance. These non-adjustable dampers are great stock upgrades and also perfectly complement the included Pro-Kit Lowering Springs. The progressive rate springs provide a comfortable ride while lowering your center of gravity, offering better handling in curves and a reduction in nose-drive under hard braking situations.

      Installation Tips. This Handling Package installs directly in place of your stock components and comes with everything you'll need, including illustrated instructions. A full 4-wheel alignment should be completed after installation. The initial drop may appear be less than expected, but springs will settle farther given a bit of time. Expected drops vary by model and body style:
      • Lowers 2011-2014 GT Coupe: Front - 1.0", Rear - 1.5" 
      • Lowers 2011-2014 GT Convertible: Front - 1.0", Rear - 1.5" 
      • Lowers 2012-2013 BOSS Coupe: Front - 0.6", Rear - 1.0" 
      • Lowers 2011-2014 V6 Coupe: Front - 0.8", Rear - 1.2" 
      • Lowers 2011-2014 V6 Convertible: Front - 0.8", Rear - 1.2"
      Application. This STR.T Shock, Strut & Eibach Pro-Kit Lowering Spring Kit is specifically designed to work with all 2011-2014 GT, V6 and BOSS 302 Mustangs.

      Fitment: 2011 2012 2013 2014 Details

      MPN# 1125 1092

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (31)

      Write a Review

      Ratings Summary

      4.7 out of 5 overall rating from 31 customers

      Installation Time: Full Day

      Installation Cost: $100-$250

      • January 25, 2020

        1 2014 GT - JuanMorales Installation Time: Afternoon

        Bad strut

        I bought my struts about a month and a half, and now my left front strut rattles like crazy. Am not sure if I will be able to return it or just replace it, but after much money I have spent to try and fix the problem who would have thought it was a brand new part.

        Helpful (0)
      • December 18, 2019

        4 2013 GT - Kevin Installation Time: Afternoon

        Pretty Good

        It has been a month since I install the kit, I have no complains and adds a different feel to my every day driving

        Helpful (0)
      • October 22, 2019

        5 2011 GT - GT500Owner Installation Time: Afternoon

        Easy install, fits great!

        Easy install. Car rides great, and handles much better than with the OEM suspension.

        Helpful (0)
      • July 07, 2019

        5 2012 GT - DanW Installation Time: Afternoon

        Easy install ride height is perfect

        Straight forward install about 4 hours for both front and rear. The ride is excellent and the ride height is perfect with 20" SVE wheels .

        Helpful (0)
      • June 08, 2019

        5 2011 GT - schonf

        great buy

        I had a mechanic install these. The difference over stock is surprising. car doesn't bounce around over bumps. turning is simple. the car doesn't fight you. Just feels tighter all around.

        Helpful (1)
      • May 29, 2019

        4 2012 GT - DANP Installation Time: Afternoon

        KONI STR.T shock/strut EIBACH springs

        I read a lot of reviews before purchasing this suspension set up. I was looking for a good ride and lower stance. It took about 3-4 hours for removal and installation of springs, shocks and struts. Luckily I was able to use a friends lift. The ride is greatly improved over stock and the stance looks good. I’m hoping that the rear will settle down a little more over time. Overall I’m happy with the set up and the ride. I would definitely recommend this product!!!

        Helpful (1)
      • March 18, 2019

        5 2013 GT - IsaacG Installation Time: Afternoon

        Lowering kit

        Awesome product. Shocks and struts look amazing under the car and the drop from the springs is perfect. Ride quality is the best. Recommend it to any Base GT owners

        Helpful (0)
      • January 02, 2019

        5 2013 V6 - Benjamin Installation Time: Full Day

        Love it!

        Very composed, confident and balanced car now. Almost zero nose dive in hard braking, either. Huge improvement over my worn out stock susp. The mild drop (.8 in front and 1.2 in rear) was perfect for me since I have 20 inch wheels. No issues at all. Just remember to get the longer camber bolts and a new camber kit too.

        Helpful (5)
      • October 02, 2018

        4 2014 GT - Moostng Installation Time: Shop Install Installation Cost: $100-$250

        A great change for a small price

        This really made a difference in the stance and handling of my14' GT convert. Install was straight forward and would have given 5 stars but the package does not contain the longer Camber bolts needed and had to order seperately.

        Helpful (3)
      • August 15, 2018

        4 2011 V6 - Chris Installation Time: Afternoon

        Love driving the car again

        Read a lot of reviews and they were accurate. Fixed the "floaty" rear end feeling, car doesn't seesaw down the track anymore or nose dive, much more comfortable between 120-140mph. The car just grabs more and I love driving it. Had 116k miles on my old suspension and after doing a rally this summer I knew I wanted to upgrade. I was worried this was gonna be too cheap of a kit but it's perfect. Only complaint I have is that you have to reuse a lot of from the old suspension. The turret mounts from my old suspension blew apart when I took them out and then I had to wait several days to get new ones. Then I forgot to transfer over the bump stops from the old shocks until half way through so keep that in mind when doing your suspension. Wish the kit included the turret mounts since they recommend you replace those anyways otherwise would be 5 stars. Overall love driving the car with this new set up.

        Helpful (6)

      Questions & Answers (9 answers)

      5 Top Rated Questions

      Hello, I have a 2014 V6 and I was wondering if this is all I need. Do I need camber plates or a panhand bar? I just want my car to be comfortable but lowered. Thank you! :)

      • Hello, Caster cambers or panhand bar are not required but is not a bad idea. Camber plates will eliminate any squeak you may receive if you do receive any, the panhand bar is not recommended for install but is a good idea to purchase when lowering the car to help align the rear end, also a full alignment once installed.

      Helpful (2)

      Would the Camber Bolts do the job for the alignment for this kit or would the Caster/Camber plates do better? But I also don't want to spend more then what I have to.

      • Hello, As a general rule of thumb, any drop 0" - 1" camber bolts should be sufficient to correct the alignment. 1"+ drop it would be recommended to purchase caster/camber plates. With that said, it can be difficult to say exactly whether or not you will need caster camber plates for your application, to correct the alignment. This is because the estimated drop for each model varies slightly. Lowers 2011-2014 GT Coupe: Front - 1.0”, Rear - 1.5” Lowers 2011-2014 GT Convertible: Front - 1.0”, Rear - 1.5” Lowers 2012-2013 BOSS Coupe: Front - 0.6”, Rear - 1.0” Lowers 2011-2014 V6 Coupe: Front - 0.8”, Rear - 1.2” Lowers 2011-2014 V6 Convertible: Front - 0.8”, Rear - 1.2” I can say for certain that caster/camber plates are not required to install the kit, and therefore you may use the camber bolts. However, if the car is unable to be returned to an acceptable caster/camber spec. Then you would want to invest in caster/camber plates to give you the additional adjustment needed.

      Helpful (1)

      Sir this kit is the kit just for the 2011-2014 Mustangs? Correct? So I can use my Stock Strut Mounts? Thanks

      • You can use your stock strut mounts with this shock, strut and Eibach pro-kit.

      Helpful (1)

      There are a couple of reviews that say you need longer camber bolts (than stock) and the shocks do not come with bushings. Do you sell these items? I don't see them on your site.

      What longer bolts is everyone talking about needing in the reviews?

      Post Your Question
      4 More Questions
      What's the widest rear and front tire I can run without running into rubbing? 1 answer
      Will this work if paired with gt500 strutmount on a gt/cs coupe? 1 answer
      Just wondering if using the lowering springs.. will I need to update other components? bumpsteer kit? 1 answer
      I have a 2012 5.0 GT. Do I need a panhard rod (like with the SR brand) with this kit or do I need any other parts for installation? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) STR.T Front Struts
      • (2) STR.T Rear Shocks
      • (4) Eibach Pro-Kit Lowering Springs

      Tech Specs

      Lowering Spring Specifications
      Spring Rate:Front: NA lb/in.
      Rear: NA lb/in.
      Year:2011-2014 GT, V6, BOSSModel:Coupe & Convertible
      Progressive or Standard:ProgressiveEstimated Drop:1.0" F / 1.5" R
      0.8" F / 1.2" R
      0.6" F / 1.0" R

      Will It Fit My Mustang

      • Boss 302 - 12, 13
      • GT - 11, 12, 13, 14
      • V6 - 11, 12, 13, 14

      Not Compatible with GT500

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