The R1 Concepts drilled-and-slotted black brake rotor for 2015–2023 Ford Mustang, rear left, is a direct-fit replacement intended to renew the braking surface and ensure stable pad contact. The drilled-and-slotted pattern helps clear surface deposits and moisture from the pad area, making it a straightforward replacement for a worn rear-left rotor on the listed Mustang applications.
R1 15-23 Ford Mustang Rear Left Drilled & Slotted Black Brake Rotor