The R1 Concepts Geo-Carbon drilled-and-slotted rotor is a direct-fit replacement designed with drilled holes and radial slots to aid pad engagement and dissipate heat during demanding stops. It fits 1999–2005 Audi A6 Quattro rear-left applications and replaces the OE rear-left rotor with compatible mounting, enabling a like-for-like replacement on supported A6 Quattro models.
R1 99-05 Audi A6 Quattro Rear Left Drilled & Slotted Geo-Carbon Rotor