Shimano Dura-Ace Di2 Electronic External Rear Wiring Kit Shoe Brand_Lake Cycling When the built-in gravity acceleration

When the built-in gravity acceleration sensor detects a significant deceleration

provides warmth and durability

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Whats In The Box

Zipp’s hookless rims have more efficient resin distribution

Shimano Dura-Ace Di2 Electronic External Rear Wiring Kit Shoe Brand_Lake Cycling When the built-in gravity accelerationDetails 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. Most 53 to 59cm frames use a Medium (830mm) Rear Wiring Kit. See our diagram