The R1 Concepts drilled-and-slotted black brake rotor for 2006–2009 Buick Rainier (front left) is a replacement rotor offering a drilled and slotted friction surface finished in black, per the description. It is intended for the stated Rainier model years and left front wheel position, serving as a matched rotor option for brake service or part renewal when the front left rotor requires replacement on those Buick Rainier vehicles.
R1 06-09 Buick Rainier Front Left Drilled & Slotted Black Brake Rotor