SRAM X.4 7/8/9-Speed Rear Derailleur

With the SRAM X.4 7/8/9-Speed Rear Derailleur you'll be able to keep your 7, 8 or 9-speed bike rolling. With a 1:1 shifter-to-derailleur actuation ratio, you will be provided with precise, light-action indexing. Specifically designed for ESP shifters, this rear derailleur provides awesome shifting and top-notch durability. The SRAM X.4 7/8/9-Speed Rear Derailleur will have you riding with confidence and ease all season long!