The R1 Concepts slotted black brake rotor for 2021 Chevrolet Express 3500 applications is a slotted replacement rotor specified for the rear right position on that model year. The black finish and slotted face are part of the listed fitment; verify year and side compatibility before ordering to ensure this rotor matches your Express 3500's requirements.
R1 21-21 Chevrolet Express 3500 Rear Right Slotted Black Brake Rotor