The R1 Concepts drilled-and-slotted black brake rotor for Buick LaCrosse (2011–2016) fits the rear right position and is supplied as a drilled and slotted unit finished in black. It is intended as a like-for-like replacement rotor for applications that require this drilled/slotted style at the rear right wheel, allowing you to match axle mates and restore the braking surface with the same rotor configuration.
R1 11-16 Buick LaCrosse Rear Right Drilled & Slotted Black Brake Rotor