The R1 Concepts drilled black brake rotor for the front left of 2008–2011 Ford Focus is a vehicle-specific rotor intended for that wheel position. The description calls out a drilled face and black finish for the front-left application, identifying this part for brake service or replacement on the specified Focus model years when restoring the braking surface at that corner.
R1 08-11 Ford Focus Front Left Drilled Black Brake Rotor