Level: Tiagra. TIAGRA rear derailleur shifts with a consistently smooth, light action. 1, Rear derailleur: Rear derailleur (RD-4700, Short cage). 5, Full set(3PCS, 11-25T): Rear derailleur (RD-4700, Short cage) + Cassette (HG500-10, 11-25T) + Chain (CN-4601, 112L).
