Cane Creek 40-Series Upper ZS49/28.6 Black CheckoutSpec= Standard Eyelet 57.5mm A great look and fit

A great look and fit make this boot a winner

The other drift has two sizes to press in cups with either 1-1/8" or 1-1/2" bearings

Temperature range +1°C to -7°C (34°F to 19°F)

Frame: Carbon

Cane Creek 40-Series Upper ZS49/28.6 Black CheckoutSpec= Standard Eyelet 57.5mm A great look and fit40 Series Solutions: separate top and bottom headset cup assemblies for tapered, reducer and conversion applications (mix & match system helps reduce inventory overlap) 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