The R1 Concepts Geo‑Carbon drilled-and-slotted rotor is a drilled and slotted brake rotor intended as a replacement for Mitsubishi Galant vehicles. It is specified for the front right position on 1985–1987 Galant models. The drilled-and-slotted face combined with Geo‑Carbon designation offers a rotor option for the listed model years and position as noted in the source.
R1 85-87 Mitsubishi Galant Front Right Drilled & Slotted Geo-Carbon Rotor