The R1 Concepts Geo-Carbon drilled-and-slotted rotor is a direct-fit replacement featuring drilled holes and slots to assist pad engagement and heat control under regular use. It fits 2005–2025 Audi A3 Sportback e-tron rear-left applications and installs as the rear-left rotor, matching OE-style mounting for direct replacement on the listed Sportback e-tron models.
R1 05-25 Audi A3 Sportback E-Tron Rear Left Drilled & Slotted Geo-Carbon Rotor