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青少年&儿童 CHARM-FD04SGG-TT
CRANK   LENGTH曲柄长度127 / 140 /   155MM
CHAINRING齿片34T / 32T / 30T / 28T
BB SETSBB 组PW-BB73+ / PW-BB92
CRANK   MATERIAL曲柄材质FORGED AL-6061-T6
CRANK FINISH曲柄涂层BLACK SAND ANO.
COMPATIBILITY变速兼容11S / 10S / 9S
B.C.D螺丝分布直径76MM
CHAINLINE链条中心线50 / 53MM
CHAINRING   MATERIAL齿片材质STEEL
CHAINRING   FINISH齿片涂层BLACK
CHAINGUARD链盖DOUBLE ALLOY, BLACK   SAND ANO.
Q-FACTOR /   I-FACTOR曲柄后下叉距离172 / 145MM

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