The R1 Concepts drilled black brake rotor for the rear right of 2005–2014 Ford Mustang is a vehicle-specific rotor intended for that wheel position. The product text specifies a drilled face and black finish for the rear-right application, making this rotor the listed replacement when servicing or replacing the rear-right brake on the noted Mustang model years.
R1 05-14 Ford Mustang Rear Right Drilled Black Brake Rotor