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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9
or bikepacking
Race-oriented design with a focus on speed and efficiency on hardpack
intuitive smart navigation
like SRAM’s XX1
Shimano Di2 Junction A SM-EW90-B 5 Port 42mm or bikepackingThe Shimano SM EW90 E Tube Cockpit Junction Boxes link your Di2 shifters to the main frame junction box using SD50 E tube wires. Serving as the OEM front wiring kit for Dura Ace Di2 9070, this component streamlines your electronic shifting setup. This functional unit features an integrated LED battery charge level indicator, a rear derailleur adjustment mode, and an internal battery charging port. All connected Di2 components require matching firmware
