CHAIN WHEEL

ZP-A66-A2
CRANK 曲柄 A61-170mm
(Alloy Forged 6061-T6)
CHAIN RING 链轮 39T*53T(Alloy)
CHAINGUARD 链罩
SPIDER 爪 BCD 130mm
CHAINLINE 链线 45mm
COMPATIBIL ITY 变速兼容 1*11S
B.B.T 中轴