Coating/finish: GeoSpec coated (corrosion-resistant coated rotor). 5×127 (5 on 5″) bolt pattern with72.1mm center bore. Part type: Disc Brake Rotor (Rotor only). Exact-match604-42029 rear rotor size/spec with aGeoSpec-style coated finish, plus multiple known cross-references to help confirm you’re replacing the correct rotor.