The R1 Concepts drilled black brake rotor for the 2021 Ford Mustang Mach-E front left is a replacement rotor finished in black with a drilled braking surface. Specified for the front left position on that model year, it is intended to replace a worn or damaged rotor and restore the correct rotor fit and appearance for the Mach‑E's front left wheel.

R1 21-21 Ford Mustang Mach-E Front Left Drilled Black Brake Rotor