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The R1 Concepts drilled black brake rotor for 2020–2021 Ford Mustang rear left is a drilled, black-finished replacement part specified for the rear left position on those model years. Intended to replace the original rear left rotor, it provides the correct fit for brake service and restores the rotor surface specified for that application.
R1 20-21 Ford Mustang Rear Left Drilled Black Brake Rotor
