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This 4-port junction box is designed to handle multiple cables and provides a flexible setup to suit different bike configurations
This inner chainring is made to exacting tolerances to work precisely with Shimano's 12-speed chain and cassette
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so you can trust it to last for any bike ride
The charger plugs directly into the junction box (SM-EW90)
Shimano Junction - EW-JC302 Arena This 4-port junction box isShimano Junction EW JC302 Perfect connection for your Di2 system The Shimano Junction EW JC302 is an essential component for your Di2 electronic shifting system. This compact junction unit makes it easy to connect and organize the cables in your setup, ensuring reliable and efficient performance on the road or off road. Flexible and user friendly The EW JC302 is designed with three E Tube ports, giving you the flexibility to customize your Di2 system
