Shimano Tiagra R440 9-Speed Rear Derailleur
The R440 range is Shimano's component groupset designed for road bikes featuring flat handlebars.The range features Tiagra technology packaged into a versitile commuting groupset. 9-Speed Flat Handlebar front derailleurs are specifically designed to run between the SL-R440-9 Rapidfire shift levers and Shimano 9-Speed road cranksets. Model FD-R440 is for double chainring systems. For triple chainring systems, use model FD-R443 (for 52T big ring) or model FD-R453 (for 50T big ring).