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PRODUCTS
MTB-TREKKING旅行 TYCM99
CRANK   LENGTH曲柄长度170 / 175MM
CHAINRING齿片48-38-28T
CRANK   MATERIAL曲柄材质FORGED AL-6061-T6
CRANK FINISH曲柄涂层SAND BLACK
COMPATIBILITY变速兼容8S / 7S
CHAINLINE链条中心线48.5MM 
CHAINRING   MATERIAL齿片材质STEEL
CHAINRING   FINISH齿片涂层BLACK(48T),   SILVER(38-28T)
CHAINGUARD鏈蓋PLASTIC BLACK
Q-FACTOR /   I-FACTOR曲柄后下叉距离180 / 153.5MM
B.B. TAPER   SQUARE四方孔軸心124.5MM

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