Using your Noble Type Alpha Rear Bumper Cover is easy. First, make sure your Subaru WRX is from 2022 - 2025 as this cover is designed for these models. Trim the factory bumper as shown in the listing picture and decide whether you need to modify or remove the rear crash bar. Then, use the pre - applied 3M adhesive to attach the cover to the bumper. No drilling or customization of the carbon fiber parts is required. As for maintenance, since it has a UV - resistant clear coat, it can protect the carbon fiber for years. But it's still a good idea to wash it regularly with mild soap and water. Avoid using abrasive cleaners as they can damage the clear coat. Also, when parking, be careful not to hit the bumper cover against hard objects to prevent scratches or damage.