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KONI Sport Adjustable Shock, Strut & Eibach Pro-Kit Lowering Spring Kit (11-14 GT, V6)

Market Price $1,060.99 You Save 12% ($122.55)
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$938.44 (kit)

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  • Item 390840
  • MPN# 1145 1092

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    Features, Video & Details

    • Complete Suspension Kit
    • Improves Handling Performance
    • Reduces Body Roll
    • Aggressive and Sporty Appearance
    • Adjustable Shocks and Struts
    • Twin-Tube Gas Pressure Design
    • Front Drop Up to 1"; Rear Drop Up to 1.5"
    • Progressive Rate Eibach Pro-Kit Springs
    • Fits 2011-2014 GT, V6, and BOSS Mustangs

    Review & Installation Video

    Review & Install Video

    Hey, guys. Adam here with Today, I'm bringing you a detailed overview and installation of the KONI Sport Adjustable Shock, Strut, and Eibach Pro-Kit Lowering Spring Kit which will be available for all 2011 to 2014 GT, V6, and BOSS 302s. So in this video, of course, I'll be going over all the details you need to know about the KONI Sport Adjustable Shocks and Struts as well as the Eibach Pro-Kit Lowering Spring Kit. Now, there's a lot of details to cover in this video simply because this is an absolutely huge upgrade for your suspension on your late S197. Now, for the shocks and struts, I'll be going over the ride quality you can expect with them installed as well as their materials and construction. For the Eibach Springs, I'll be detailing the specs, all you need to know about the drop for your particular model from the GT, V6, and BOSS 302 as well as the performance and handling benefits of adding these to your ride as well. I'll top the video off with the install which I'll let you know upfront here will get two out of three wrenches on a difficulty meter because it is a little bit more involved than a direct bolt on but it's not gonna be the hardest job in the world. The KONI Sport Adjustable Shock, Strut, and Eibach Pro-Kit Lowering Spring Kit will be for any 2011 to 2014 GT, V6, or BOSS 302 owner who's looking to seriously improve and upgrade their suspension and handling package for their late S197. This will involve the ability to adjust and fine tune their shocks and struts while getting an aggressive appearance with a pretty noticeable drop in ride height, anywhere between an inch and an inch and a half on a progressive lowering spring. So obviously, there is a lot to talk about in this video so I'm gonna break it down piece by piece like I said in the beginning. I'm gonna start with the KONI Sport Adjustable Shocks and Struts since they will play a huge part in the handling, performance, and the ride quality of your S197. The KONI Sport Adjustable Shocks and Struts, otherwise known as the KONI yellows, are just one step up from the KONI orange STRTs, which you might recognize from the site, but of course, these will give you a full range of adjustability on your shocks and struts depending on your personal feel so you can change exactly how the ride will feel that day. Now, with that said, it all comes down to personal preference, again, but you can loosen or stiffen the dampening with just a simple turn of the knob. A clockwise turn on the knob will loosen the compression and rebound ratio and of course, just a counterclockwise will stiffen it back up. So these are actually gonna be constructed from KONI out of a gas-pressurized twin-tube design here with a larger diameter piston for optimum street performance, and of course, track as well. Now, they wouldn't be the KONI brand name without that yellow finish and a KONI logo printed right on the side here. Now, the twin-tube gas-pressurized design, I just mentioned a second ago, is going to be found with a lot of options in this price range but KONI has been making variations of the shock and strut for literally decades now so they've built a pretty well-known name, and that's a name that I even use on my own Cobra so I can tell you firsthand this comes with a very comfortable ride, and of course, it can really take a beating. Now, obviously, there's a lot of goodies that go into this package. So the KONI shocks and struts you see here with all the adjustabilities I just mentioned are obviously gonna be best suited for a set of lowering springs. Now, you can save yourself the hassle by picking up this particular kit because they're grouped perfectly with the Eibach Pro-Kit Lowering Spring Set so you don't have to go shopping around finding for the best match because it's already done for you. Eibach Pro-Kit Lowering Springs will work perfectly in conjunction with your KONI sport adjustable shocks and struts to drastically improve the handling performance and ride quality of your Mustang. Now, when you lower the center of gravity on your Mustang, not only are you getting an aggressive muscle car stance but you're also gonna reduce squatting during acceleration, hard body roll while hitting the corners, and of course, nosedive or excessive nosedive in those hard-braking situations. Now, with that said, this is gonna be perfect for those daily drivers, track queens, or even those weekend warriors. Now, this offers a lot of different drops in ride height for the different models of the '11 to '14 Mustangs so bear with me a second while I get you the specifics. Now, if you're rocking a GT from the '11 to '14 family, whether it's a Coup or Convertible, expect a 1-inch drop in the front and a 1.5-inch drop in the rear. If you've got a BOSS 302 of the same generation, expect a 0.6-inch drop in the front and a 1-inch drop in the rear and finally, if you've got a V6, whether it's a Couple or Convertible, expect a 0.8-inch drop in the front and a 1.2-inch drop in the rear. Now, the drops I just mentioned will be sitting on a progressive spring rate from Eibach which is gonna be perfect for the daily driver, the daily commute, or the guys out there hitting the track on occasion, taking those hard turns or hard cornering. Now, with that said, the progressive spring rate is gonna be acting pretty normal and very comfortable under normal driving conditions but once you put a little bit more pressure on them taking it to the track or hitting those hard turns, they're gonna stiffen up and react to those cornering situations. Now, as far as the pricing goes, if you're interested in the KONI Sport Adjustable Shocks and Struts and you're looking for a perfect Eibach combination, you can pick up this particular kit for about $850 and in that region. Now, it doesn't save you too much money from picking them up separately but it'll save you enough to make it worth it. Now, in my personal opinion, the main purpose of this entire kit here is just, honestly, convenience. That way if you're picking up these shocks and struts and you're looking for the perfect lowering spring, you don't have to go through digging, swapping through page by page to find what fits perfectly. The Eibach kit and the KONI's have come together for the perfect kit and they work together really well as our customers have definitely confirmed. If you wanna check that out for yourself, we've got some customer reviews and testimonials sitting on the product page of the KONI and Eibach kit so you can check those out for confirmation of that fact. Shifting gears over to the install portion of the video. Like I said in the very beginning, this isn't gonna be the hardest job in the world but it is a lot more involved than a direct bolt on so it will require some mechanical know-how and experience. Now, if you don't have that, of course, there's no shame handing this one over to the professional to get done properly. Now, if you are tackling this yourself, you wanna make sure you have the proper tools on hand such as a jack and jack stand or a lift if you have that, making it a lot more convenient. You wanna make sure you have a ratchet and full socket set on deck as well as a spring compressor to safely remove and install the springs. Overall, this should take you about four hours if you're doing it yourself and it gets the two out of three wrenches on our difficulty meter. So just to give you a brief idea of what exactly you're gonna be working with, you're gonna, of course, wanna jack up the car and support it on jack stands or get it on a lift if you have access to one. Now, you're gonna start by removing one wheel at a time in the front and, of course, you're gonna have to drop the entire breaking system out of the way just to gain access to that factory strut. So once you have that all taken care of, you'll pop open the hood and remove the nut holding your strut in place at the top of the strut tower while supporting it from the bottom. Move down to the bottom here and remove the lower strut bolt as well as the N-links and pull the entire factory strut assembly out of the vehicle and set it aside. At this point, you'll need to use your spring compressor to install the Eibach Pro-Kit Springs onto your KONI yellows. Once you have that back in the vehicle, you can start by tightening everything down at the top of the strut tower to 30 foot-pounds and, of course, the lower strut bolts and the N-links to about 85 foot-pounds. So once you have the fronts taken care of, the rears will kick off the exact same way. You'll remove the rear wheel, drop the entire brake assembly out of the way just to gain access to that shock. Now, the top nut on the shock will actually be located in your trunk so you'll have to move over that trunk liner on the sides and bottom to gain access to that. The lowers might be interfering with the rear sway bars so you might have to drop that out of the way to gain access to that. Now, with that said, at this point, you wanna make sure you're supporting the rear differential housing before you remove any of these nuts. So once you get that top one taken care of, you can start lowering the jack, supporting your differential housing out of the way just to slip down that shock and spring. Once you've unbolted that rear shock and slipped that lowering spring out by lowering the differential, you can start by reinstalling all the KONI adjustables and the Eibach Pro-Kits right in the reverse order and you can top it all off with the exact same torque specs as the fronts. After that, you're good to go. Now, at this point, you wanna make sure you're driving around on the new suspension setup. Let it break in before you make any adjustments, of course. Now, typically, I'd recommend leaving it right in the middle as far as adjustability goes before you start your ride. Once you break everything in, you can determine how you'd wanna adjust things and, of course, clockwise loosens, counterclockwise stiffens, and you can use the adjustability tool that Eibach and KONI have provided for you in the kit. Now, on top of that, about four hours' worth of time in the driveway at home, two out of three wrenches on our difficulty meter. Overall, not the hardest job in the world, again, but it is a lot more involved than just a direct bolt on. So if you're the owner of a 2011 to 2014 GT, V6, or BOSS 302, you might be looking at a complete overhaul of your suspension and handling package in which case, check out the KONI Sport Adjustable Shock, Strut, and Eibach Pro-Kit Lowering Spring Kit which can be found right here at

    Dynamic Driving Style. Drop your center of gravity and add some thrill to your 2011-2014 Mustang ride. Replace your stock suspension system with this complete kit, which includes KONI Sport Adjustable Shocks and Struts in addition to Eibach Lowering Springs. You'll experience more responsive handling, a more commanding grip and a more aggressive profile – all of which add up to an exciting transformation from your previously ho-hum driving style.

    Sporty Appearance. If your goal is to intimidate and impress, this Handling Kit should be part of your action plan. Dropping the body gives an aggressive, streamlined appearance and impressive handling over stock. The confident look on your face when you're handling those hairpin turns like an experienced pro will make spectators and other drivers take notice at your local track.

    Innovative Technology. As the creator of the industry's very first adjustable shock absorber, KONI has been at the forefront of shock innovation for decades. The shocks and struts in this kit provide less chassis movement and are fully adjustable, so you can choose the dampening that fits your driving style for the road or track. Each kit is specifically engineered to fit your 2011-2014 Coupe or Convertible Mustang, so optimum performance is within reach.

    Quality Construction. Complete with a gas pressurized twin-tube design, the KONI Sport Shocks and Struts feature a durable, bright yellow finish and a larger diameter piston for optimum street performance. These fully 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 Sporty Handling Pack is direct fit install for 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 KONI Sport 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

    What's in the Box
    • (2) Sport Adjustable Front Struts
    • (2) Sport Adjustable Rear Shocks
    • (4) Eibach Pro-Kit Lowering Springs
    Installation Info
    Tech Specs
    Lowering Spring Specifications
    Spring Rate: Front: NA lb/in.
    Rear: NA lb/in.
    Usage: Street
    Year: 2011-2014 GT, V6, BOSS Model: Coupe & Convertible
    Progressive or Standard: Progressive Estimated Drop: 1.0" F / 1.5" R
    0.8" F / 1.2" R
    0.6" F / 1.0" R
    Will it fit my Mustang?

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    Questions & Answers (3)

    3 Top Rated Questions

    I have a 2014 GT - Track Pack - Manual. Will these require the use of caster camber plates to align everything after they are swapped. I'm guessing that from only a 1" drop in the front end the answer is no but, I want to make sure. Regards, Dave

    • While it is not necessary to purchase caster/camber plates, any drop in the vehicle's suspension I recommend purchasing caster.camber plates as the new ride height will weigh on the vehicle differently than it would as it is set to a stock height.

    Helpful (1)

    Install questions: 1) are any of the old strut parts reused? Install video didn’t show the jounce kit or shaft cover being used in the Koni’s, although they are on the stockers. 2) Strut to spindle torque? Video says 85ft/lbs for strut to spindle, but the Factory torque appears to be 166.

    • When installing the KONI Sport Adjustable Shock, Strut and Eibach Pro-Kit Lowering Spring Kit, the jounce bumpers will be reused. The Strut to spindle bolts should be torqued to 166 Lb ft, and the strut rod nut should be torqued to 76 lb-ft.

    Helpful (0)

    Are Eibach camber bolts good enough to properly align the car?

    • The Eibach camber bolts would work well with this KONI Sport Adjustable Shock, Strut & Eibach Pro-Kit Lowering Spring Kit to help realign the car.

    Helpful (0)
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    Customer Reviews (7) Write a Review

    Overall Rating 4.7

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$250-$500

    • Handling Improvement 4.8 4.8
    • Fit 4.8 4.8
    • Bang For Your Buck 4.6 4.6

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      September 19, 2018

      Worth the $$

      I've only had these installed for 2 weeks and they are still settling in but this is how the car should have come stock. It handles great, no more 4x 4 look, and the braking improvement was very surprising! I wish I would have done this the day I bought new in 2011.


      Year: 2011 Submodel: GT

      Helpful (0)

    • 4/5

      Installation Time: Afternoon

      May 05, 2018

      Install...recommend extra parts

      Install went fairly easy, took me about 4 hours in a garage. I decided to purchase a new pair of Ford upper strut mounts to use with the Maximum Motorsports Caster Camber plates which allowed me to leave my original struts assembled. The most difficult part of the install was assembling the front struts with the Ford strut mounts and CC plates...just a pain to keep them assembled while using a spring compressor. Wish Koni would include dust boot for the front...using KYB SB111 ones off Amazon...seem to fit fine. Have them set one half-turn from the softest setting for now...seems to ride well. Ride seems a bit firmer, which is to be expected. Real test is at an autocross event to see if how well it works to contain roll and plant tires.


      Year: 2013 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      January 05, 2018


      Easy install. perfect height lowered springs. A lot of adjustment in the struts .Thumbs up on this product.


      Year: 2013 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      October 03, 2017


      This combo is phenomenal. I previously had these same shocks and struts on my last s197 with the SR springs and this package is WAY more comfortable as a daily driver, yet to push it too hard, but already have reservations in the NC mountains to push their limits.


      Year: 2011 Submodel: GT

      Helpful (4)

    • 4/5

      Installation Time: Full Day

      July 20, 2017

      Pretty good kit for the price.

      This is a pretty good deal for the price. I replaced my OEM adjustable shocks and struts on my 2012 BOSS 302 with this setup. The springs in the rear lowered the back and a bit more than I had expected. It can get pretty bumpy. I may take it up a half inch in the rear, but haven't put more than 100 miles and one auto cross race on this setup yet so I'm not exactly sure yet if I'll need to take it up a notch. Best point I can make is that It certainly did help lower the center of gravity and stabilize my turns throughout the autocross course, I'll give it that for sure!! Not to mention the lowered stance looks nice and aggressive! ( install time was about 3/4 of a day )


      Year: 2012 Submodel: Boss

      Helpful (4)

    • 5/5

      September 06, 2016

      Looks, Comfort and Performance

      Eibach Koni = Pure driving bliss. The Pro-kit gives the 5.0 that desired look by getting rid of the 4x4 look, without being unpractical. The springs are progressive rate, so just cruising around town gives you a buttery smooth ride quality, especially with the addition of the Yellows. I daily drive with this setup and as of now I am very happy. Side note: This could just be my car, but I have the resonator's deleted with welded in straight pipes and they hang rather close to the ground. They don't scrap, they are just close. Keep that in mind when driving.


      Year: 2014 Submodel: GT

      Helpful (7)

    • 5/5

      August 17, 2016

      Most versatile kit on the market

      I had been looking for awhile to lower my Mustang. I really wanted the Boss 302 set up with adjustable shock and struts, however they are not sold as a kit and if you buy each piece separately have a deep wallet! This was the best kit on the market for quality, ride height, and adjustability. One of the best mods I have done and I can change from softer settings for everyday driving to harder setting for autocross. It took about 4 hours to install in my garage and the quality was great!


      Year: 2012 Submodel: GT

      Helpful (6)

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