The R1 Concepts Geo-Carbon drilled-and-slotted rotor is a direct-fit rear left replacement for 2005–2011 Audi A6 Quattro vehicles. It combines R1's Geo-Carbon rotor surface with drilled-and-slotted machining designed to fit the factory rear-left brake assembly. Sold for the left rear axle on the stated model years as a like-for-like drilled-and-slotted rotor replacement.
R1 05-11 Audi A6 Quattro Rear Left Drilled & Slotted Geo-Carbon Rotor