Using this Noble carbon fiber rear diffuser is a great way to enhance the look of your 2022 - 2025 Subaru WRX. To install it, first, elevate your vehicle. Notice the pre - drilled holes. Most of them will be drilled into the lower part of the bumper, and there are two positions in the center that use the provided threaded U - nuts. When using your car, just drive as normal. As for maintenance, keep it clean by using a mild soap and water solution to wash the carbon fiber surface. Avoid using abrasive cleaners that could scratch the finish. And always remember the California Prop 65 warning. Try to avoid breathing in exhaust fumes, don't let the engine idle for too long, service your car in a well - ventilated place, and make sure to wash your hands or wear gloves when working on your vehicle.