The GiroDisc zinc-plated slotted rear rotor for 2017 and newer Audi RS4 and RS5 (B9) combines slotted braking faces with corrosion-resistant zinc plating where noted. Slots help channel pad debris and gases away from the pad contact zone to support consistent braking feel. This rotor is intended for the rear fitment of B9 RS4/RS5 applications as specified in the description.
GiroDisc 2017+ Audi RS4/RS5 (B9) Zinc Plated Slotted Rear Rotors