Abstract: A number of variations may include a casting including a body portion and a mass damper extending therefrom wherein the body portion and the mass damper are a continuous un-joined single piece of cast metal, and wherein the mass dampers constructed and arranged to prevent or retard vibrations of the body portion. A number of variations may include a vented brake rotor including a hub and a first annular portion extending from the hub; the annular portion including a first rotor cheek, a second rotor cheek spaced apart from the first rotor cheek and at least one rib extending between the first rotor cheek and the second rotor cheek; a mass damper disposed between the first rotor cheek and the second rotor cheek.