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SHIMANO Dura-Ace SM-EW90 DI2 E-Tube Junction Box

SHIMANO Dura-Ace SM-EW90 DI2 E-Tube Junction Box

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Price: $114.99
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SHIMANO Dura-Ace SM-EW90 DI2 E-Tube Junction Box 

This is the Shimano DI2 Dura-Ace E-Tube Junction Box. This box is referred to as the junction Box A and is located at the handlebars on a Di2 build.
The box is available in either a three or five port option, to accommodate either a one-pair or two pair shifter arrangement.

SM-EW90-A: 3-Port Cockpit Junction Box connects 1 pair of Di2 shifters to the frame junction box via 3 SD50 E-tube wires
SM-EW90-B: 5-Port Cockpit Junction Box connects up to 2 pairs of Di2 shifters to the frame junction box via 5 SD50 E-tube wires
OEM front wiring kit for Dura-Ace Di2 9070
LED battery charge level indicator
Rear Derailleur adjustment mode
Internal Battery charging port

Average weight: 10
Type: External type
Position: Under stem
Compatible system: E-TUBE
Compatible electric wire: EW-SD50

Use the Di2 system checker to update component firmware from http://e-tubeproject.shimano.com/

All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions

Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.