The R1 Concepts drilled-and-slotted black front-left brake rotor for 2009–2011 Cadillac STS is a vehicle-specific rotor made to match the listed years and wheel side. Its drilled and slotted surface and black finish refresh the front axle's braking surface and present a coordinated appearance while fitting the factory mounting location.
R1 09-11 Cadillac STS Front Left Drilled & Slotted Black Brake Rotor