Koni Single Adjustable Front Strut - Struts are externally adjustable from underneath the hood, even with the factory strut brace. This strut is prepared for coil over use, and eliminates machining of critical suspension components. The sway bar bracket is reinforced beyond the stock or regular Koni bracket.

Ground Control Threaded Sleeves - This system is designed to eliminate stress risers caused by machining notches into the strut housing. Unlike other companies that claim superiority by cutting threads into a critical component of the suspension, Ground Control uses engineering common sense to maximize the strength of the suspension.

Ground Control Adjustable Spring Perch - A unique design, that uses an allen head bolt to clamp the single threaded perch into the correct position. No secondary pieces are needed to ";jam"; the threaded perch into position. This method of clamping onto the threads also prevents sand, grit, and water from getting into the threads, which is a common problem with jam nuts.

Koni Single Adjustable Rear Shocks - Preadjusted by Ground Control to match your rear spring rates using our shock dyno. The standard Koni "compress to adjust" version is in this kit. (The special GC valving is now only available with the "Street/Track" kit.).

click here to see the street track kit

Ground Control Springs - Any street spring rate is available. Ground Control by Eibach springs are made on German machines both in the USA and in Germany, however all Eibach springs have a lifetime guarantee against sagging, rate change, or any manufacturing or material failure. Lifetime guarantee. Compare our guarantee.

Ground Control Bump Stop - We do not just ask you to reuse your stock bump stops. The stock bump stop is designed for stock suspension. We provide a bump stop designed to work with our suspension. These are soft foam, same quality as OE BMW parts, but made to our specs in Germany.

Ground Control Rear Ride Height Adjustment Kit - Billet aluminum threaded adjusters bolt on top of the rear control arm. The e46 M3 has a larger diameter rear axle than the standard e36, so it is necessary for clearance to not have any portion of the adjuster below the control arm.