The R1 Concepts Geo-Carbon drilled and slotted rotor for 2013–2019 Cadillac ATS fits the rear left position as a direct replacement. It bears Geo-Carbon identification and incorporates drilled holes with machined slots to present a prepared braking surface for the pad. Specified for OE-style fitment, this rotor is intended for standard brake replacement or when choosing a drilled-and-slotted rear rotor.
R1 13-19 Cadillac ATS Rear Left Drilled & Slotted Geo-Carbon Rotor