The R1 Concepts drilled-and-slotted black brake rotor is specified as a replacement rear-left rotor for GMC TopKick applications. Described as drilled & slotted with a black finish, it adheres to catalog detail and serves as a serviceable rotor for the rear brake assembly. Fitment is explicit: for GMC C4500 TopKick applications from 2004–2010 in the rear-left position, provided to align with factory mounting.
R1 04-10 GMC C4500 Topkick Rear Left Drilled & Slotted Black Brake Rotor