Using these fender flares is a great way to upgrade your Subaru WRX or STI. First, carefully remove the parts from the package and check for any damages. You'll need to prep the flares for installation, which might involve sanding and cleaning to ensure a good fit. When fitting, take your time to align them correctly with your car's body. The two - piece design makes it easier to work around the front bumper and door openings. Remember, these flares need to be painted to match your car's color. As for maintenance, regularly clean them with a mild car wash soap to keep the white gelcoat looking good. Avoid using harsh chemicals that could damage the fiberglass. Since they are made to order, expect them to ship about 2 weeks after you place your order.