Abstract: An insert for a casting mold used to produce a sound dampening rotor of a caliper disc brake is provided. The insert includes a ring having an inner diameter, an outer diameter and at least one tab. The insert also includes an inner core made from a refractory material, the inner core being adjacent to the ring. The tab of the ring is operable to position the ring relative to the inner core. Furthermore, the ring and the inner core together can be placed within the casting mold and afford for the desirable and accurate placement of the sound dampening ring within a cast sound dampening composite rotor of a caliper disc brake.