Internal headsets are available for 1 1/8”, 1 ¼”, 1.5”, and tapered steerer tubes. Internal headsets are sometimes referred to as Zero Stack (ZS) because both cup and bearing is housed entirely inside the headtube.
ORBIT ZS CF
With Carbon fiber top cover
Orbit Z Ceramic
Internal headset (with cups) with ceramic angular contact bearings.
ZS-4
Internal headset (with cups) with ceramic angular contact bearings.
Orbit Z
Internal headset (with cups) with angular contact bearings.
Orbit Z-CF
Internal headset (with cups) with angular contact bearings.
Orbit Z-CX
Internal headset (with cups) with angular contact bearings.
Orbit ZS
Internal headset (with cups) with angular contact bearings.
Orbit ZS CF
Internal headset (with cups) with angular contact bearings.
Orbit Z-41CX
Internal headset (with cups) with angular contact bearings.
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