They have done about 6,000 miles, have custom 10kg front springs to allow the car to be lowered beyond normal hks coilover height while retaining the full damping stroke, with modified collar and top plate to try and retain the spring a bit when lowered as much as my car. The rears are 7kg springs, and also have modded collars to retained the spring. These are brilliant coilovers, and suit the S14 perfectly 
£500
£500
