The R1 Concepts Geo-Carbon drilled-and-slotted rotor is a replacement rear-left rotor for 2004–2009 Audi S4 models. With drilled holes, slots, and a Geo-Carbon finish, the rotor is intended to assist in removing debris and moisture from the pad interface. Supplied for the rear-left position, it fits the specified S4 applications and is intended for standard brake service replacement.
R1 04-09 Audi S4 Rear Left Drilled & Slotted Geo-Carbon Rotor