Quick video describing what you need to add to newer Treks in order to enable wireless bluetooth or ANT+ communication (for (phone, Wahoo, Garmin Edge, etc.) with the Shimano Di2 electric shifting system.

Components:

Shimano Di2 Inline Wireless Unit - EW-WU111: [ Ссылка ]

150 mm Di2 EW-SD50 Electric Wire: [ Ссылка ]

Shimano TL-EW02 Di2 E-Tube Plug Tool: [ Ссылка ]

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