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青少年&儿童 DMA-CR099A-TT
CRANK   LENGTH曲柄长度130 / 140 / 155   / 160MM
CHAINRING齿片42T / 40T / 38T / 36T
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
CHAINLINE链条中心线47.5MM
CHAINRING   MATERIAL齿片材质ALLOY
CHAINRING   FINISH齿片涂层BLACK SAND ANO.
Q-FACTOR /   I-FACTOR曲柄后下叉距离153 / 124MM

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