The R1 Concepts Geo-Carbon drilled-and-slotted rotor is a direct-fit replacement made with cross-drilled holes and slots to help maintain pad contact and dissipate heat for consistent braking. It is specified for 2005–2013 Audi A3 rear-left applications and installs as the rear-left rotor, matching OE mounting for a like-for-like replacement on supported A3 models.
R1 05-13 Audi A3 Rear Left Drilled & Slotted Geo-Carbon Rotor