Using Your StopTech Brake Rotor: Install the brake rotor on the rear right side of your 2005 - 2007 Subaru STI following the standard installation process. This rotor is designed to work with your vehicle's existing braking system. When driving, you'll notice improved braking performance right away. Whether you're in normal daily commutes or more performance - oriented driving, this rotor will serve you well. Note: Make sure to check the rotor for any damage before installation. If you're not experienced with brake installation, it's best to have a professional do it. Maintenance Tips: Regularly inspect the rotor for signs of wear and tear. Clean the rotor periodically to remove dirt and debris. This will help maintain its performance and extend its lifespan. Also, keep an eye on the brake pads as well, as the rotor and pads work together for optimal braking.