The R1 Concepts drilled brake rotor is a replacement rotor specified for certain Porsche front applications. It features a drilled braking surface finished in black, providing a consistent visual option when servicing front brakes on period vehicles. This unit fits Porsche 928 front left applications from 1986–1991; confirm year and side compatibility before ordering.

R1 86-91 Porsche 928 Left Front Drilled Black Brake Rotor