Using your Noble R Style Rear Spoiler is easy. First, make sure the installation area on your 2015 - 2021 Subaru WRX or STI is clean. Then, apply the spoiler using the double - sided adhesive provided. It's important to install it when the temperature is between 70 and 100 degrees Fahrenheit for the best adhesion. After installation, don't move or touch the spoiler for at least 20 minutes. For the first 72 hours, try to avoid washing your car or exposing it to extreme conditions. To maintain your spoiler, simply wash it with mild soap and water. Avoid using abrasive cleaners that could damage the carbon fiber or paint finish.