Shimano Electric Cable Di2 EW-7970

This is a Shimano EW-7970 Di2 Rear Wiring Kit.

Features:

• All external wire kits include a large battery mount which is secured underneath a water bottle cage, typically on the downtube
• Dura-Ace 7970 Di2 and Ultegra 6770 Di2 components and wires are not cross-compatible; the battery and its charger are universal