A reliable, entry-level rear derailleur for 6/7/8-speed drivetrains. Long cage (SGS), max 34T, smooth shifting, perfect for city, hybrid, and recreational MTB bikes.
Replacement for BB-ES25, now 25g lighter
Tubular 22mm spindle for Octalink V2 crank arms
More rigid assembly than square taper
Sealed cartridge bearings
Mounting bolts not included
Compatible with EW-SD50 Di2 Wire
Capacity: 500 mAH (± 2000km)
Use with EW-WU101 or SC-MT800 interfaces/junction to gain BlueTooth Smart wireless connectivity for on-the-fly adjustments with smartphones and tablets
