The R1 Concepts Geo-Carbon drilled-and-slotted rotor (DFC) is listed for Audi A4 Quattro front and rear applications from 2011–2017. This overview presents the rotor as the drilled-and-slotted Geo-Carbon option specified for A4 Quattro models in that year range, confirming front and rear fitment as provided and keeping the description focused on rotor pattern and application.
DFC 11-17 Audi A4 Quattro Front & Rear Drilled & Slotted Geoperformance Rotors