The R1 Concepts slotted black brake rotor for the right-rear position on Mazda 3 (2017–2021) is a direct replacement sold individually. It supplies the slotted braking surface and black finish specified for that wheel position, suitable when replacing a single rear rotor. Verify fitment for your exact model and trim prior to purchase and installation.
R1 17-21 Mazda 3 Rear Right Slotted Black Brake Rotor