The R1 Concepts Geo-Carbon drilled-and-slotted rotor is a direct-fit rear left replacement for 2000–2008 Audi A4 Quattro models. It uses a Geo-Carbon rotor surface with drilled-and-slotted machining to match factory brake mounting and the rear-left axle location. Sold for the left rear position across the stated years as a replacement rotor with a drilled-and-slotted finish.
R1 00-08 Audi A4 Quattro Rear Left Drilled & Slotted Geo-Carbon Rotor