SHIMANO Junction B External Wire Routing 4-Port

SM-JC40

ULTEGRA_R8050_m

SM-JC40

SHIMANO - Junction B - E-TUBE - External Wire Routing - 4-Port

For external DI2 wire routing, SHIMANO's SM-JC40 Junction B is the central connector for DI2 systems. Wires from the front and rear derailleurs, cockpit area, and battery all plug into the 4-port SM-JC40 junction, which is mounted under the bottom bracket.

  • For external wire routing

TECHNOLOGIES

PRODUCT SPECIFICATIONS

MODEL NO SM-JC40
SERIES ULTEGRA R8050 Series
Average weight 8.6
E-tube port (pcs) 4
   
Specification 4 connectors type of junction
E-tube connector (pcs) 0
Type External type

SERIES LINE-UP

  • PC Linkage Device SHIMANO PC Linkage Device Mini USB Port
  • Front Derailleur SHIMANO ULTEGRA DI2 Front Derailleur 2x11-speed
  • Rear Derailleur SHIMANO ULTEGRA Medium Cage DI2 Rear Derailleur 11-speed
  • Rear Derailleur SHIMANO ULTEGRA Short Cage DI2 Rear Derailleur 11-speed