NEW Shimano BT-R1A External Di2 Battery - 7970, 9070, 6770, 6870 consignment Derailleur Capacity: 18

Derailleur Capacity: 18

making it a functional and aesthetic upgrade

DT Swiss standard brass nipples have a square interface and slot on the top

Mount Position: Bottom Bracket

Sloping crown with threaded eylets

NEW Shimano BT-R1A External Di2 Battery - 7970, 9070, 6770, 6870 consignment Derailleur Capacity: 18Shimano Di2 Batteries. Must purchase battery, charger, and power cable to complete the system. All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions Use Di2 system checker to update component firmware Shifter Derailleur Compatibility: Dura Ace 7970 Di2 Shifter Derailleur Compatibility: Dura Ace 9070 Di2 Shifter Derailleur Compatibility: Shimano Ultegra Di2