The standard Eradispeed Rotors are a direct replacement performance rotors are all cast with an integral hat or hub/hat section just like the original OEM rotor. Each one, however, is a unique casting which employs either a directional curved vane or the patented Kangaroo™ port design. All benefit from additional mass in the “firepath,” as well as a proprietary, high-friction iron formulation. Each EradiSpeed™ unit is also crossdrilled, slotted and then zinc washed for rust resistance.