Spodní část hlavového složení Ritchey Comp Cartridge Integrated IS. Material: alloy Stack Height: zero Headtube ID: 42, 47, 52mm S.H.I.S.: IS42/30  (1 ⅛”), IS47/33 (1 ¼”), IS52/40 (1.5")   IS42/30 (1⅛") bearing41.8/30.5/8mm 45°/45° - sealed cartridge (ACB) IS47/33 (1 ¼”) bearing46.9/34.1/8mm 45°/45° - sealed cartridge (ACB) IS52/40 (1.5") bearing51.85/40/8mm 45°/45° - sealed cartridge (ACB) Weight: 32g Color: black