Using this StopTech brake rotor is easy. Just install it like you would a regular brake rotor in the front of your 2005 - 2012 Subaru Legacy GT or 2014 - 2018 Forester XT. When installing, make sure to clean the mounting surface to ensure a good fit. As for maintenance, check the rotor regularly for any signs of wear or damage. If you notice unusual noises or a decrease in braking performance, it's time to take a closer look. To keep it in top shape, try to avoid driving through deep water or harsh environments as much as possible. Also, make sure to use high - quality brake pads that are compatible with this rotor. With proper use and care, this brake rotor will give you a reliable and safe braking experience for a long time.