The R1 Concepts drilled black brake rotor for rear right Porsche 911 (1999–2021) is a catalog-listed replacement specified for the rear right position across the broad year range. The product description calls out a drilled rotor face and a black finish. Fitment is explicit to rear right 1999–2021 Porsche 911 applications, giving clear selection information for affected years.

R1 99-21 Porsche 911 Rear Right Drilled Black Brake Rotor