The EBC 2019+ BMW Z4 RK Series Premium Rear Rotors are high-performance brake rotors designed to provide superior braking power and improved handling. They feature a unique, curved vane design that increases surface area for improved heat dissipation and a slotted surface for improved stopping power. The rotors are made from high-grade cast iron and are zinc coated for superior corrosion resistance. Additionally, the rotors are designed to fit perfectly with the BMW Z4 and are compatible with all OEM brake pads.