H&R Street Performance Coil Overs are the suspension solution for discerning drivers—from daily drivers to serious tuners—can appreciate the awesome handling and superb ride comfort. H&R is the originator of the true coil over system for the street. Each custom valved shock is tuned with a precision-engineered progressive rate spring to create a finely tuned suspension system. The fully threaded shock body allows for adjustable vehicle lowering—to where you want. This feature helps balance vehicle weight, resulting in a lower center of gravity and improved performance and control.