Product Info: Part: Disc Brake Rotor Position: Front Classification: Gold Solid Or Vented Type Rotor: Vented Nominal Thickness: 1.181 inches / 30 millimeters Outside Diameter: 12.638 inches / 321 millimeters Discard Thickness: 1.063 inches / 27 millimeters Inside Diameter: 7.5 inches / 190.5 millimeters Disc Finish: Bare Center Hole Diameter: 2.