32H Black Disc Hub.

The 11 speed Alfine Hub runs on needle bearings for increased durability and high drive efficiency.

Helical internal sprockets increase durability, perform better with high torque loading and provide a constant engagement for a smooth and quiet operation

Oil bath lubrication system increases durability and reduces friction in the hub, while Labyrinth seals improve sealing performance both resulting in extending service life

Silent clutch engagement also gives a smoother quieter shift

Shimano's precise manufacturing abilities have enabled them to construct the Alfine 11-speed internal hub to be their most efficient yet