The R1 Concepts drilled and slotted black rear right brake rotor for 1998-2017 Sterling Acterra (hydro brakes) is described as the replacement rotor for the rear right position across those years. The product listing specifies a drilled-and-slotted surface and black finish for Acterra models with hydro brakes. Verify your vehicle's year and brake configuration to ensure fitment.
R1 98-17 Sterling Acterra (Hydro Brakes) Rr Right Drilled & Slotted Black Brake Rotor