The Power Stop Evolution drilled and slotted zinc-plated rotor pair is a rear upgrade for 2011–2020 GMC Sierra 3500 HD applications. Drilled holes and rounded slots help dissipate heat and remove gasses, dust and water, while zinc plating resists corrosion. These rotors are produced to tight tolerances, dynamically balanced and designed as a bolt-on OE-style replacement, sold as a pair.
Power Stop 11-20 GMC Sierra 3500 HD Rear Drilled & Slotted Rotor - Pair