Skip to main content

Shimano Dura-Ace Di2 Electronic External Rear Wiring Kit

Shimano Dura-Ace Di2 Electronic External Rear Wiring Kit
The Dura-Ace Di2 Front Wiring Kit (image of Rear Wiring Kit unavailable from manufacturer).
Please select options
This item is not permitted to be shipped, however it can be purchased online and picked up at your convenience.


Shimano's Dura-Ace Di2 takes shifting to the next level. The Rear Wiring Kit connects to both the left and right shifters and Junction Box A (which displays battery power and allows manual adjusting). It also includes a battery mount, cable covers to route and hide the cables and a wire plug/unplug tool. The External Kit is meant to be run on the outside of the frame.

Measure your frame according to the diagram and calculate X. Choose the wiring kit that’s the same length or longer than X.

Part Numbers

Option UPC MPN Store SKU
Long (890mm) 689228278547 IEW7970L
Medium (830mm) 689228278554 IEW7970M 415889
Short (770mm) 689228278561 IEW7970S