Using your D2 Racing RS Coilover Kit is straightforward. First, make sure your vehicle is on a flat and stable surface. When installing, adjust the height and preload according to your driving needs. You can fine - tune the 36 - way dampener and rebound settings for a personalized driving experience. As for maintenance, regularly check the mounts for any signs of wear or damage. Keep the Teflon - coated threads clean to prevent rust. If you notice any issues with the dampening or performance, the kit is rebuildable and serviceable in the US, so don't hesitate to get it checked by a professional.