TCSH4-SMA(G4XW)

1、crank: Forged Alloy-6061-T6 165,170,175mm                     

2、chainring: steel 42/34/24T                                                     

3、Chain line: 48.7mm   

4、B.B.Axle:124.5mm                 

5、Compatiblity: 7/8s

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