Using these fender shrouds is a breeze. First, gather all the included hardware. Then, simply align the shrouds with the appropriate spots on your Subaru WRX or STI (2015 - 2021). Thanks to the direct - fit design, you won't need to make any major adjustments. Just secure them in place with the provided hardware. As for maintenance, keep them clean by washing them with mild soap and water. Avoid using harsh chemicals as they might damage the powdercoat finish. When parking your car, try to keep it in a covered area to prevent long - term exposure to the elements. This will help maintain the bright Neon Green color and the overall quality of the shrouds for a long time.