Shimano Tiagra FC-4703-B Triple Front Derailleur - 34.9mm + adapter of choice
Shimano Tiagra Triple Front Derailleur - FC-4703-B. Model - Tiagra Triple Front Derailleur FC-4703-B. Make - Shimano. Maximum capacity of 16 teeth, for outer rings up to 53 tooth. Aluminium links and band to save weight and increase rigidity.