关注微信公众号查券更方便
R7100R8100R9200曲柄用正负齿
STONE内偏4mm正负齿单盘公路曲柄
STONE BCD110四爪R7100 UTR8100 DAR9200用内偏4mm封闭正负齿单盘
适配禧玛诺BCD1104爪单盘盘片
STONEBCD110R2 R7100 UTR8100 DAR9200曲柄牙盘正负齿单盘12速