To work at its best, a suspension system has to have its dampers (the shock absorbers) precisely matched to its springs. And the dampers have to be the best available, custom-designed from the ground up and carefully tuned by race-proven experts. That's where H&R Coil-Overs come into the picture. These complete units use the latest in dynamic damper technology. They are hand-made in Germany to rigid ISO9001 quality specs, with fully-threaded shock bodies to let you fine-tune your ride height quickly, easily and precisely. These are perfect for Porsche Club racing or similar track events, or even your wild, all-out street machine. They are tuned for the uncompromised handling you demand, but without the harshness you'd expect from a less-advanced suspension system.