40-Series Solutions: separate top and bottom headset cup assemblies for tapered, reducer and conversion applications
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Same features and materials as 40-series complete headsets
Top assemblies include star nut and top cap, while bottom assemblies include crown race (Carbon indicates a carbon top cover)
Cane Creek Integrated 41.0mm ID (36x45), Campy Hiddenset 42.0mm ID (45x45) , ZS (ZeroStack), or EC (traditional, External Cup) available for 1", 1-1/8" and tapered steerers