Using these StopTech brake rotors is straightforward. Just replace your old rotors with these new ones following your vehicle's standard rotor replacement process. Make sure to clean the mounting surfaces before installation to ensure a proper fit. When driving, you'll notice improved braking right away, especially in different weather conditions. As for maintenance, regularly check the rotors for any signs of wear or damage. If you see excessive wear, it's time to replace them. Also, keep them clean. You can use a mild brake cleaner to remove dirt and debris. Avoid using harsh chemicals as they may damage the E - coating. And remember, these rotors are sold individually, so if you need to replace both front rotors, you'll need to purchase two.