The Jitsie semi-integrated headset is compatible with frames with a 1 1/8" size headset tube.
top side ZS44/28.6 (head tube inside diameter: 44mm / steering tube diameter: 28.6mm)
bottom side ZS44/30 (head tube inside diameter: 44mm / crown race seat diameter: 30mm)
manufactured from high quality aluminium
sealed quality bearing for long life usage
focus on minimal weight
black anodised finish with Jitsie logos