The Ground Control Coilover Conversion Kit is designed to work with Bilstein or Koni struts and shocks, but please note that ride quality with Bilstein may be worse than with other brands, and fitment may require consultation, so be sure to specify your shock type before ordering. You also have the option to remove the stock spring seat and weld for added tire clearance and adjustment range.
With this kit, you can expect a change in ride height from 0 to 2 inches, giving you more control over the look and feel of your vehicle. Ground Control's unique design allows for easy adjustment, so you can lift or lower specific corners of the car by spinning the adjustable spring seat up or down.* You can use this kit with either stock or aftermarket shocks, and some applications may require the use of provided wrench.
One of the standout features of the Ground Control Spring Kit is the use of Eibach Race Springs (ERS), which are exclusively distributed on the west coast by Ground Control. You can choose from a wide range of racing and street/show spring rates, and all Eibach springs come with a lifetime warranty against spring rate change and sagging. The adjusters consist of high-strength 6061-T6 aluminum that is anodized for durability and appearance. The square-cut threads on the adjusters lock the adjustable spring seat in place under load, and a setscrew can be used for extra security. Upper spring perches help insulate the spring.
At Ground Control, they take quality seriously, which is why they work closely with Eibach USA to manufacture these springs to the highest standards. Ground Control offers a lifetime guarantee on all parts, not just springs, and if anything fails while correctly installed, GC will take care of it, no excuses. Every single part of the Ground Control Street coil-over kit is made in the USA or from trusted sources, so you can be sure of its quality and reliability.
*Please note that some adjustments may require the use of a provided wrench.