Tapered headsets are a combination of the other styles. Usually a tapered steerer tube will have a 1.1/8" 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 available for that headset.
Steerer Tube OD: 1.1/8" to 1.5" tapered
Upper head tube ID: 42mm
Lower head tube ID: 52mm
Fork crown seat OD: 39.8mm
Stack height: 8.9mm
Angular Contact Bearings
Buy FSA Components from Chain Reaction Cycles, the World's Largest Online Bike Store.