The R1 Concepts drilled-and-slotted black brake rotor for 1984–1987 Pontiac Fiero is listed as a direct replacement for the rear-left position. This rotor is specified with drilled and slotted braking surfaces and a black finish to match the stated part; verify the fitment for your Fiero model year and rear-left side before purchase to ensure compatibility.
R1 84-87 Pontiac Fiero Rear Left Drilled & Slotted Black Brake Rotor