Brake System Component Appraisal

Disc Brake Rotor

The item depicted is a single disc brake rotor, likely for a motorcycle or a similarly sized vehicle, judging by its diameter and design. It is constructed from metal, exhibiting a typical metallic grey color with areas of surface oxidation and a worn appearance. The rotor is circular with a series of small, ventilation holes drilled into the braking surface, distributed evenly around the outer circumference. These holes are characteristic of 'drilled' rotors, designed to dissipate heat and vent gases. The central mounting hub features five oval cutouts, which serve to reduce weight and potentially aid in cooling, and five smaller circular bolt holes for attachment to the wheel hub. There are visible signs of wear on the braking surface, indicated by concentric rings and a slight discoloration consistent with friction from brake pads. No specific manufacturer's marks or part numbers are discernible from the provided image. The overall condition suggests it is a used part, showing signs of normal operational wear and tear, including some minor surface rust or corrosion in areas not directly in contact with the brake pads. The age is estimated to be contemporary, but it is difficult to determine an exact period without more identifying marks or context.