Shimano EW-JC304 Di2 Junction - 4 Port GSULT Machined aluminum cups thread together

Machined aluminum cups thread together directly into a T47 BB shell

Multiple Computer Mount Options

and its Di2 parts rely on wireless technology to simplify operation and ensure smooth shifting

Lil’ Cobber is super simple to operate

yet offer traction when loaded in cornering and braking

Shimano EW-JC304 Di2 Junction - 4 Port GSULT Machined aluminum cups thread togetherIntroduced with the Shimano EP800 series, the SD300 E Tube components form the interface between compatible STePS parts and expand the functional range of future Di2 systems. Shimano Di2 E Tube junction for the connection of 2 EW SD300 wires. Fixing by plug connection. Mfr Claimed Weight TBC