The R1 Concepts Geo-Carbon drilled and slotted rotor is a direct-fit replacement rotor with drilled-and-slotted machining and a Geo-Carbon surface to aid pad contact and debris evacuation. This rotor fits front left and rear left positions on Blue Bird Bus Vision models with hydro brakes for 1989–2022, offered as a compatible disc brake replacement for those applications.
R1 89-22 Blue Bird Bus Vision (Hydro Brakes) Front Left/Rear Left Drill & Slot Geo-Carbon Rotor