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青少年&儿童 CHARM-FD04S (76)
CRANK   LENGTH曲柄长度127 / 140 /   155MM
CHAINRING齿片34T / 32T / 30T / 28T
CRANK   MATERIAL曲柄材质FORGED AL-6061-T6
CRANK FINISH曲柄涂层SAND BLACK
COMPATIBILITY变速兼容11S / 10S / 9S
B.C.D螺丝分布直径76MM
CHAINLINE链条中心线50MM
CHAINRING   MATERIAL齿片材质STEEL
CHAINRING   FINISH齿片涂层BLACK
Q-FACTOR /   I-FACTOR曲柄后下叉距离171.4 / 144.4MM
B.B. TAPER   SQUARE四方孔轴心122.5MM

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