Cane Creek 40-Series Upper, ZS56/28.6 Black Rear Derailleurs Fits 12mm x 1 single-lead

Fits 12mm x 1 single-lead axles

- The 14T upper and 18T lower pulley wheels maximize the tooth count to reduce friction

- Carbotecture radial design master-cylinder/lever with 3-finger alloy lever blade and clamp with adjustable reach

MY22/23 Rail Gen 2

- Fully serviceable and re-buildable

Cane Creek 40-Series Upper, ZS56/28.6 Black Rear Derailleurs Fits 12mm x 1 single-lead40 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