Shimano Alfine DI2 S505 Internal Hub - 8 speed
This internally geared hub is fully compatible with both Alfine 8-speed Di2 shifters, features a Centerlock disc brake mount, but is also V-brake compatible.
It requires the MU-S705B 8-speed motor unit, roto, axle nuts, cog snap-ring, non-tun washer, and optional CS-S500 sprocket. Requires Di2 control unit, wiring harness, battery and shifter to operate.
This is a hub only.