CHAIN WHEEL

ZP-A69-T2
CRANK 曲柄 A60-170mm
(Alloy Forged 6061-T6)
CHAIN RING 链轮 38T*48T(steel)
CHAINGUARD 链罩
SPIDER 爪 BCD 110mm
CHAINLINE 链线 45mm
COMPATIBIL ITY 变速兼容 1*11S
B.B.T 中轴