R1 Concepts Geo-Carbon rotor for 2012–2020 Audi S4, front left. This replacement unit carries the Geo-Carbon surface and the drilled-and-slotted treatment where indicated to assist with heat and pad-residue control while restoring the braking face. Fitment is explicit to the listed Audi S4 application, making it a direct front-left replacement.
R1 12-20 Audi S4 Front Left Geo-Carbon Rotor