Special order only. ETA Harris: 3 to 5 days
Alfine Premium 8-speed Internal Gear Hub.
SG-S501 Model has triple roller clutch design.
Disc brake capability, using Shimano's Center-lock rotors.
Shifting power modulator for smoother shifts
Complete parts kit included.
Shifter w/cable included.
Non-turn washers Green & Blue set (for vertical dropouts) Included Note: Comes with 20 tooth standard Nexus sprocket - not the one with
See: http://harriscyclery.com/shimano-nexus.html for an online gear calculator
Online Service Manual at http://sheldonbrown.com/nexus8