- The Alfine 11 speed Di2 specification internal gear 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
- Double roller silent clutch engagement also gives a smoother quieter shift
- Top normal internal structure for improved tolerance when shifting while riding under load
- Alfine hubs use pedal power to aid down-shifting resulting in fast and accurate shifts with an exceptionally light feel
- Shimano's precise manufacturing abilities have enabled them to construct the Alfine internal hub to be there most efficient yet
- 409% Gear ratio
- Centre-Lock disc rotor compatible
- 135 mm O.L.D. spacing
- Weight: 1,670g
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