Check the listing for details. Works Components 1.0 EC34-EC34 Angleset-1 1/8'', Headset, : EC34/28.6 |. Color: Black, Condition: New. Listed at 97.71 USD. Adjusts the bike’s headtube angle by 1.0 degree . 1.0 degree headset will lengthen a bikes wheelbase by around 10mm, and lower the bottom bracket by 2mm . Due to angled nature, headsets are headtube length specific . Precision CNC-machined from 6082-T6 aluminum and anodized in the UK . Includes top-cap, star nut, bearings and crown race To 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. Item Specifications: Bearing Type, ACB Sealed, Crown Race, 30mm, S.H.I.S. Upper, 34mm, Headset.