D2 Racing RS Coilover Systems are 36 way damper and rebound adjustable mono-tube full coilover system. The setup has separate height and preload adjustments allowing for optimal adjustment and allowing full strut travel at all times along with pillow ball upper mounts or top mounts*. Mounts are constructed of 6061 powder coated aluminum. Threads are Teflon coated to prevent rust. Rebuildable and serviceable in the US.