CHAIN WHEEL

ZP-A68-T2
CRANK 曲柄 A46-170mm
(Alloy Forged 6061-T6)
CHAIN RING 链轮 42T*52T(steel)
SPIDER 爪 BCD 104mm
CHAINLINE 链线 48.5mm
COMPATIBIL ITY 变速兼容 2*9S/10S
B.B.T 中轴 Chrome molybdenum steel