Works Components Angle Headset 1Deg EC34/28.6|EC34/30 88-96HT BlkTo suit 1 1 8" forks Split type 7075 T6 aluminium crown race for simple, tool free installation Upper Bearing: 41mm OD, 45 x 45 Degree AC sealed bearing Lower Bearing: 41mm OD, 45 x 45 Degree AC sealed bearing SHIS standard headsets Headset comes complete with top cap (star nut included), bearings and crown race all parts required for fitment TECH SPECS Lower Cup 34mm Material 7075 T6 Aluminum Steerer Tube 1 1 8 Crown Race Diameter 30mm Headset