Using these RokBlokz mud flaps on your 2022 - 2025 Subaru WRX is a breeze. First, gather all the items in the package: four black mud flaps with a grey logo, stainless steel mounting hardware, and the installation instructions. Then, refer to the instructions to find the existing OEM mounting locations on your car. You won't need to drill any new holes. Simply attach the mud flaps using the provided hardware. As for maintenance, a regular wash with mild soap and water will keep them looking great. They're designed to be durable, but try to avoid scraping them against sharp objects. In extreme weather conditions, they'll hold up well, but it's still a good idea to check the mounting from time to time to make sure everything is secure. Always follow the warning link provided in the product description for safety information.