The R1 Concepts Geo-Carbon drilled and slotted rotor is a rear replacement rotor featuring a Geo-Carbon finish and drilled-and-slotted surfaces. It fits 1996–2005 Audi A4 Quattro applications in the rear left position and is intended for use when replacing a worn or damaged rear rotor on that model.
R1 96-05 Audi A4 Quattro Rear Left Drilled & Slotted Geo-Carbon Rotor