The drilled holes will reduce the heat that builds on the rotor.
Rotors-Slotted-Black, Zinc Coated, 3002-65007 Formulated with the G3000/G11H18 cast iron specification, DFC G3000/G11H18 Brake rotors are engineered to match OEM specifications for durability, reliability, and stability.•Zinc Plated black for rust protection on the rotor hub, vents, and edge.•Original Equipment (OE) vane configuration to ensure proper and maximum heat dissipation.•New in Box, Ready to Install, No Modifications Required.