... one of most favorable price, authentic components for the bicycle(derailleur, brake, crank,saddle,flywheel, chain and so on) Caution:Our ... are available. We install Tektro Aquila brake on the bicycle, strengthen the brake-effect.Cable actuated mechanical disc brakeActuated ... of biycle parts as below. Frame: CARBONFork: RST GILA-T Handlebar: CARBONHead stem: KEZHEN 6061 ALLOYSeat post: CARBON Saddle: ...