Tapered headsets are a combination of the other styles. Usually a tapered steerer tube will have a 1 or 1.5” lower diameter, and a 1 1/8” upper diameter.
The headsets for these frames & forks can be any combination of traditional, internal, or integrated headsets. It is very important to accurately measure the inner diameter of the headtube top and bottom to narrow down the headset model needed. In some cases, Tapered headtubes can be used with a straight 1 1/8” steerer tube if a reducing headset race is used.
Internal headset (with cups) with angular contact bearings
FSA Orbit 1.5 ZS Tapered Steerer Specifications:
36/ 45 ACB
Upper Headtube 44mm ID
Lower Headtube 56mm ID
For tapered 50mm /62mm OD headtube
Tapered Fork Steerer only
Alloy top cap
Upper: Forged alloy cup with Angular Contact Bearings
Lower: 1.5" CNC machined alloy cup with Angular Contact Bearings
Stack Height 16.9 2.9=19.8mm
Buy FSA Orbit 1.5 ZS Tapered Steerer from Chain Reaction Cycles, the worlds largest online bicyle store