Shimano SM-EW90-A 3 Port Di2 Junction Box
RRP $104.16Save 50%
Out of Stock
Shimano SM-EW90-A 3 Port Di2 Junction Box, top juction box for 6870 and 9070 groups
- The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts
- This junction A is required to connect the shifters via E-tube wires to the down tube junction wire
- 3-port design, one for down tube wire to bottom bracket junction, two for shifter connection
- Battery level indicator feature
- E-tube EW-SD50 wires not included
- Additional charging point when using internal battery
- Gear index setup switch to allow fine tuning via shifter buttons
- Reliable and secure water resistant connectors
- Stem mounting strap included
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Mr CorbmanYou need this to make the Di2 system work. It's easy to set up. Merlin has the best price. The device is tiny. I wish the mounting strap was a little easier to use.