Using this D2 Racing RS Coilover Kit is quite straightforward. First, make sure your vehicle is on a flat and stable surface. You can adjust the height and preload according to your driving needs and preferences. For a smoother ride, you can play around with the 36 - way dampener and rebound settings. When installing, pay attention to the upper mounts and make sure they are properly secured. As for maintenance, regularly check the teflon - coated threads for any signs of rust or damage. If you notice any issues, it can be rebuilt and serviced in the US. This will help keep your coilover kit in top - notch condition and ensure a great driving experience.