More clearance for belt / chain line (vs. MU-UR500)|46 mm belt line for use Gates belt drive system (combination with chain also available)|Electric wire EW-SD300 port|Compatible with E6100/E6110/E5000 via AD305 electric wire conversion adaptor|Compatible with Inter-5E/8 and Alfine-11|Compatible with 11/8/5 gear hub - SG-S7051 SG-C6061 SG-C7050