The EBC 10+ BMW 550 4.4 Twin Turbo GT (F07) USR Slotted Rear Rotors are a high-performance, direct-fit replacement for the OEM rear brake rotors on the BMW 550 4.4 Twin Turbo GT (F07). The rotors feature a unique slot design that helps to reduce brake noise, improve braking power, and reduce pad wear. The slots also help to reduce heat build-up and improve pad bite. The rotors are made from high-grade cast iron and are designed to provide long-lasting, reliable performance. They are also backed by a 10-year warranty for added peace of mind.