Hardrace HS Spec CoiloversPiston size: 44mm diameter piston. Damper Adjustability: 33 level damping force adjustable. With every 2 3 levels change you can feel the difference in damping force. Damper Material: 52mm diameter damper body made with high strength steel then coated with electroplating treatment to prevent rust and corrosion to ensure damper can withstand the harsh motorsport conditions. High quality oil seals are utilized to withstand high temperatures and to