After several years of use in racing applications, Ground Control kits have been adapted for your dual purpose street or track car. Most other spring and shock kits offer only one set ride height or feel when installed - GC gives you options. With this kit for your E34, you can adjust the personality of your ride to match your own needs and wants of how your car should perform. With quality components made in Europe and the USA, this will far out perform and outlast many Asian-made systems of the same cost, and is far superior to those that cost less.

Performance: Ground controls kits are an affordable master of performance, BUT they can be ordered with spring rates to suit your needs. Adjust your new ground control shocks and struts to your desired feel and you can have a system that not only handles like a guided-missile, but comfort is also exceptional thanks to Koni's high quality dampers.

Stance & Ride Height Options:
Whether you want a tasteful mild drop, or a car that scrapes the pavement like a euro low-rider; Ground Control does it all thanks to its high quality components and user adjustability! While a drop of .5-1.5 inches is within recommended height for performance with standard length shocks, creative owners can push the limits of what's possible should you be brave enough to go lower in the pursuit of the ultimate mind bending look, or building a race car (Some people do turn 5s into race cars!).
A) Standard Length Bolt on kit: Everything included with the capability to go from .5-to-1.5" inches drop easily. A great direct bolt on setup for most users and street enthusiast.
B) Short Stroke / Low Ride Height: For those that want to go 1"-2.5" lower for the look or performance.
Keep in mind that lower than 2 inches can cause excessive rear camber, however an M5 can go a bit lower and keep alignment by virtue of its adjustable subframe. You may also cut/modify your non-M5 if you wish to go lover than 2" and maintain correct camber.  NOTE: We strongly recommend at least the "Sport ride" or firmer if you wish to extremely lower or "slam" your car as a ride that is 'too soft' will have issues bottoming out over bumps. This is the setup for those who want a seriously low car "Slammed" E34, or are building a track car. This Short Stroke setup requires you to send your front spindles in for modification, unlike other vehicles, this is not available in a DIY form. Cost +$230.

The Ground Control system's unique design allows for easy adjustment. Simply lift the corner(s) of the vehicle that you wish to adjust and spin the adjustable spring seat up or down to raise or lower the vehicle. Each E34 kit includes the following quality GC parts:

Springs: All of our ride height adjustable kits now exclusively feature Ground Control springs, manufactured by Eibach USA. A broad selection of spring rates are available. All Eibach / GC springs offer a lifetime warranty against spring rate change and sagging. Ground Control works very hard with Eibach USA to make these springs to the standards that you demand. Lifetime guarantee on everything, not just springs. No excuses about "racing" or "special". If anything fails, while being correctly installed, it will be taken care of, period.

Adjusters: All adjusters consist of a threaded sleeve and adjustable spring seat. And are made using high strength 6061-T6 aluminum; anodized for greater durability and appearance. The threads on the adjusters are square cut which locks the adjustable spring seat in place under load. For further precaution, a setscrew in the adjustable spring seat can be used to secure adjustment. Upper spring perches are used to insulate the spring.
 

Rear upper shock mounts: Billet aluminum rear upper mounts eliminate the failure prone stock pieces. On the e34 M5, they also eliminate the ‘’nivomat’’ suspension, to allow an adjustable shock. Bumps stops are provided and assembled. Urethane upper spring pads are used to insulate the spring.
 

Bump Stops: This kit includes four Ground Control bumpstops, designed and manufactured for GC, and matched to your springs.
 

Camber Plates: HYBRID Camber / Caster Plates A special version of our race plates, toned down for dual-purpose cars. Uses a proprietary upper perch with a rubber insulator. More camber adjustment than stock, caster adjustment, aircraft bearings, engraved with calibrated degrees. Every component is anodized or plated, including fasteners. Adds extra travel to avoid excessive bottoming out, this is a very well engineered product. .
Camber and caster are separately adjustable by sliding the mounts, without removing any components from the car.
The Ground Control camber plates feature two sets of bearings, a proprietary bearing, made to our specs by Aurora in the USA, which allows for articulation of the shock shaft. This spherical bearing is very understressed, as the GC design does NOT support the weight of the car on the spherical bearing. Instead, the weight of the car is supported by a completely separate articulating needle bearing, which is also manufactured for Ground Control in the USA.

(the camber plates were formerly an option, now they are standard equipment at a lower price)

The shocks and struts: in this kit are not the standard off-the-shelf Koni struts for the e34. The front struts are adjustable from the top, and with special valving designed by Ground Control. Available as bolt on or in the send-in shortened versions for going low. The rear shocks have a special slightly more aggressive, but still streetable damping like the front struts.

Warrantee: We can only have a guarantee like this because every single part of the Ground Control Street coil-over kit is made by us or someone we trust. All parts are made in the USA or Europe of high quality materials. If you have any problems, and the components are verified to be installed correctly, GC will take care of the item. This does not cover excessive lowering scenarios where shocks have run out of travel.
Disclaimer: Extremely lowered cars (more than 2") will be much more likely to damage suspension and oil pans, we are not responsible if you chose to do this and this is not covered under any warranty.

OPTIONS and INFORMATION:

 

Ride Feel Options
In the drop-down menu next to the image of the product, please select from the following choices:	Option A & B: This kit is priced to use either a shortened front strut or standard length front strut. There is no price difference in the PARTS, however there is labor involved...
Select Option "1" = Comfort Ride 1. (Sportier that stock. Driving with clients and/or wife [think "M5"]) OR Select Option "2" = Street Ride 2. (Controlled & Comfortable with friends and / or dates. Good fun!) OR Select Option "3" = Sports (Maybe 1 track day a year,  this is Firm and Sporty [most popular]) OR Select Option "4" = "Hot Rod" (A stiff ride! Surprise a real Sports Car [make sure to get some good tires too! Rock and roll!] ) OR Select Option "5" = Frequent Track Visits. (Race spring rates for dedicated high grip tires - call us to confirm if you really want this)	Shock / Strut Housings: In the drop-down menu next to the image of the product, please select from the following choices: Select Option "A" = BOLT ON: If you would like stock length front struts. (no welding/cutting required) fine for up to a 1.5" drop, great for a sporty street car. --OR-- Select Option "B" = SEND IN SHORT-STROKE CONVERSION: Unlike the E30 & E28, GC CANNOT provide directions for you to prepare your front strut housings yourself, and they must be sent in. We recommend that you send in your front spindles so GC can convert them to coil-overs; remove obsolete spring perch, shorten, reinforce, and powder-coat your strut housings to perfection, this costs $230 for the pair. For getting low!