Origin8 Twistr Semi-Integrated & External ZS44/28.6|EC44/40 Headset

Highly polished sealed angular contact premium bearings ensure smooth operation. CNC machined AL6061 top cover is sealed to keep moisture and grit away from the bearings. CNC machined AL7075 crown race protects the lower bearings and fork. AL6061 top cap forged stainless steel bolt and star nuttable{border-collapse:collapse;width:100%;}td{text-align: left;padding: 8px;}tr:nth-child(even){background-color:#f2f2f2}th{background-color:#eb212e;color:white;text-align:left;padding:8px;} TECH SPECSSHISZS44/28.6|EC44/40 ColorBlackWeight Steered OD28.6mm Cup (mm)44mm/44mm Race (mm)40mm Stack Height13mm Top/13.7mm Bottom Bearing Angle45deg/45deg Size1-1/8` to 1.5`