The R1 Concepts slotted black brake rotor for 2021 Chevrolet Express 3500 applications is a slotted replacement rotor specified for the rear left position on that model year. The black finish and slotted surface are included in the listed specification; confirm year and side fitment for your Express 3500 before purchase to ensure correct compatibility and installation.
R1 21-21 Chevrolet Express 3500 Rear Left Slotted Black Brake Rotor