EW-JC302
Brand: Shimano
Two-port E-Tube SD300 junction, the 12-speed equivalent of the EW-JC200. It joins or extends two EW-SD300 wires in a semi-wireless Di2 build — R9250, R8150, R7150 or GRX RX825. It entered the Shimano catalogue with the SD300 generation in 2020 and carries no SD50 port: bridging the two generations is the job of the EW-AD305 adapter.
| Type | Electronic shifting accessory |
|---|---|
| Model years | since 2020 |