The R1 Concepts drilled black brake rotor is a replacement rotor that restores the braking surface using a drilled pattern and black finish. It is specified for rear-left fitment on 1994–2004 Ford Mustang applications, providing an application-focused rotor option when replacing a worn rear disc across the listed model years.

R1 94-04 Ford Mustang Rear Left Drilled Black Brake Rotor