FSA Orbit ITA tapered headset
The Orbit ITA headset is designed to fit into a zero stack (44mm ID/50mm OD) head tube, but also allows the use of a 1 1/8" to 1.5" tapered steerer fork.
In case you're wondering, the 2017 Cinelli Vigorelli is the only frameset we sell this headset will work on.
• 1 1/8" to 1.5" tapered
• zero stack top cup/oversized external bottom cup
• 36º/45º angular-contact bearings
• stack height: 9.3mm upper, 13.4mm lower
• weight: 129g