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