Bicycle Brake Rotor Appraisal

Motorcycle Brake Rotor (Perforated Disc)

This appears to be a used motorcycle brake rotor, likely a front rotor given its perforated design and typical motorcycle brake system characteristics. It is constructed from metal, most probably steel given its silvery-gray color and the presence of surface wear and light surface rust/discoloration in areas. The rotor is circular with a large central bore and six smaller holes arranged concentrically around it for mounting to a hub. The braking surface, or swept area, shows clear signs of use with concentric wear lines. The design features large, curved cutouts that create a distinctive three-spoke or three-lobe pattern from the central mounting area to the outer braking surface. Numerous small, evenly spaced drilled holes are present around the outer circumference of the braking surface, a common feature for heat dissipation and reducing brake fade. The overall condition indicates significant use, with visible scoring on the braking surface, consistent with normal wear. There is some minor surface discoloration or light corrosion, particularly in recessed areas and where the central part meets the swept area, indicating some exposure to moisture or simply age. While no distinct manufacturer's marks are clearly discernible from the image, the design and construction suggest a commercially manufactured part, possibly an aftermarket or OEM component for a specific motorcycle make and model, likely from the late 20th to early 21st century. The craftsmanship appears to be industrial standard for automotive/motorcycle components, designed for function and durability.