Works Components 1.0Adeg angle-adjust headset with ZS44 upper and ZS56 lower cups for tapered steerer tubes and head tubes between 85 and 98mm in length. CNC-machined in the UK from 6082-T6 aluminum with sealed bearings. Allows + or - geometry adjustment. Fits frames with 44mm upper and 56mm lower internal head tubes. Tapered steerer tube compatible (1 1/8" to 1 1/2") or with 1 1/8" fork with a reducer crown race. Ideal for trail, enduro, and downhill bikes. Works Components Angled Headsets Explained Adjusts the bike&&';;s head tube angle by 1.0 degree 1.0 degree headset will lengthen a bikes wheelbase by around 10mm, and lower the bottom bracket by around 2mm Due to angled nature, headsets are head tube length specific. This headset works for head tubes between 85mm and 98mm in length. Precision CNC-machined from 6082-T6 aluminum and anodized in the UK Includes top-cap, star nut, bearings and crown race TECH SPECS Model 1.0 Degree Angle Headset S.H.I.S. ZS44/28.6 / ZS56/40 Stack 8mm/3mm Headtube Length 85-98mm Headtube Internal Diameter Upper: 44mm (ZS44) / Lower: 56mm (ZS56) Cup Insertion Depth Upper: 9mm / Lower: 11.5mm Upper Bearing 41mm OD, 45 x 45Adeg AC sealed bearing Lower Bearing 52mm OD, 45 x 45Adeg AC sealed bearing Color Black table{border-collapse:collapse;width:100%;}td{text-align: left;padding: 8px;font-weight:350;}tr:nth-child(even){background-color:#f2f2f2}th{background-color:#eb212e;color:white;text-align:left;padding:8px;}.desc ul{font-size:24px;font-weight:600;margin-left:-25px;padding-top:35px;border-top:3px solid #f0f0f0;}.desc li{list-style:none;border-bottom:4px solid #eb212e;width:142px;}