Shimano禧玛诺RD-RX800-GS用户指南用户手册产品说明书使用说明文档安装使用手册 ULTEGRA RX Rear Derailleur RD-RX800-GS (11-speed) S G S - 0 0 0 0 0 0 8 6 R M - - D D R R ITEM INTERCHANGE- ITEM SHIMANO INTERCHANGE- DESCRIPTION NO. ABILITY NO. CODE NO. ABILITY 1 Y3E998020 Bracket ...