The R1 Concepts drilled and slotted black rear left brake rotor for 1998-2017 Sterling Acterra (hydro brakes) is listed as the replacement for that rear left location across the stated years. The description highlights a drilled-and-slotted rotor surface in a black finish tied to the Acterra with hydro brakes. Confirm fitment and brake system compatibility before ordering.
R1 98-17 Sterling Acterra (Hydro Brakes) Rr Left Drilled & Slotted Black Brake Rotor