EW-AD305
Brand: Shimano
Conversion adapter between the two Di2 wiring generations: an E-Tube SD50 port on one side, an SD300 port on the other. It is the part that lets an 11-speed accessory — SW-R9150 sprint switch, SW-R9160 extension-bar switch — plug into a 12-speed R9250, R8150 or R7150 system. Shimano classes it as a junction B and introduced it with the SD300 generation in 2020.
| Type | Electronic shifting accessory |
|---|---|
| Model years | since 2020 |