Using this RS - R Sports - i coilover kit is straightforward. First, make sure your vehicle is a 2008 - 2014 Subaru STI. When adjusting the coilovers, you can use the 36 - way adjustability to suit your driving needs, whether it's for daily commuting or track days. To adjust the ride height and preload, use the independent adjustment features. For the best ride, follow the recommended adjustment ranges. When it comes to maintenance, regularly check the dampers and springs for any signs of wear or damage. If you notice anything unusual, it's best to get it checked out. Keep in mind that the warranty is for 1 year or 12,000 miles from the day of purchase, so take good care of your coilover kit to make the most of it.