Shimano SM-EW90 Di2 Junction-A
The Shimano SM-EW90 is the front junction box for Di2 e-tube wiring, available as a 3-port version for standard road levers and satellite switches or a 5-port version for TT and triathlon setups with additional shifters. It's the connection hub a Di2 drivetrain needs at the bars, chosen by port count to match how many shifters and switches your cockpit runs.
- Front junction box for Di2 e-Tube wires
- SM-EW90-A = 3 port (To connect regular road dual levers and climbing/sprinter swtiches)
- SM-EW90-B = 5 port (To connect dual control levers (road or triathlon) and satellite switches and additional TT/triathlon switches)
Pairs well with
Shimano SM-EW90 Di2 Junction-A
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