The R1 Concepts Geo-Carbon drilled-and-slotted rotor is a direct-fit replacement engineered with drilled holes and surface slots to help maintain pad bite and assist cooling during heavy braking. This rotor is listed for 1998–2024 Audi TT rear-left position and matches OE mounting points for a straightforward swap into the rear-left hub of supported TT applications.
R1 98-24 Audi Tt Rear Left Drilled & Slotted Geo-Carbon Rotor