Using this front lip spoiler is easy. First, gather all the included installation hardware. Since the lip is pre - drilled, you just need to match it up with the appropriate spots on your 2015 - 2021 Subaru WRX or STI. Use the factory push clips; the extras are there in case you need them. When installing, make sure to follow the proper alignment to get the best look. As for maintenance, simply wash it with mild soap and water regularly. Avoid using harsh chemicals as they may damage the unpainted black finish. Also, be careful when driving over rough terrain to prevent any unnecessary impacts on the lip.