Shimano Dura-Ace 7970 Di2 Rear Wiring Kit for Large Frames - 890mm

This external wire kit is what brings your Di2 components to life. The Di2 Rear Wire Kit, EW-7970, has long enough wires to reach the derailleurs and the battery pack. It plugs into the five-pin connector below 'Junction A' on the front harness, which plugs into the shifters. Check with Shimano to determine which wire kit length is required for your bike.

• Contains all wires and accessories needed to run Di2 components
• Medium length (890mm) 
• Bike type: road
• Speeds: 10
• Configuration: Di2