FSA, Orbit Z, Headset, Black, 79g, (S.H.I.S : ZS44/28.6 / ZS44/30)

Upper bearings: 1-1/8'', 36°/45° ACB (blue) Lower bearings: 1-1/8'', 36°/45° ACB (blue) Deeper forged alloy cups Headtube OD: 50mm Stack height: 20.1mm Ceramic Headtube inner diameter: 44mm