Shimano Alfine DI2 S705 Internal Hub - 11 speed - Disc Brake
This internally geared hub is fully compatible with both Alfine 11-speed Di2 shifters and Di2 road shifters, features a Centerlock disc brake mount, but is also V-brake compatible.
Note: this is the hub only. It must be built up with a rim and compatible spokes. Shifting requires the MU-S705 11-speed motor unit (item # 50-2764) and optional CS-S500 sprocket. If using with Ultegra and Dura-Ace Di2, all components require the same firmware version to operate.