SHIMANO R9100 series rear derailleur 11S Compatible CS Low side maximum 14T gear 33600 Series color SS DURA-ACE RD-R9100 25-30T (Top compatible)

Pulley cage / Installation / Specifications: SS / Direct mounting / OT-RS900 included Rear compatible speed / compatible chain / total capacity: 11 speed / HG-X11 / 35T Compatible top gear (min/max): 11/14T Compatible low gear (min/max): 25/30T Maximum front tooth number difference: 16T