Direct from Japan SHIMANO Ultegra ULTEGRA RD-6870 SS 11 speed electric Di2
Shimano SHIMANO Ultegra ULTEGRA RD-6870 SS 11 speed electric Di2 rear derailleur. Shimano SHIMANO Ultegra ULTEGRA RD-6870 SS 11-speed Electric Di2 Rear Derailleur 0. Electric operation has been checked.