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 SHIMANO ULTEGRA R8050 Series
Average weight 8.6 g
Remarks For external spec (fixed on frame with screw)
   
E-tube port (pcs) 4
Specification 4 connectors type of junction
E-tube connector (pcs) 0
Type Junction [B]

SERIES LINE-UP

  • Front Derailleur Adapter DURA-ACE DI2 Front Derailleur Clamp Band Adapter 28.6/31.8 mm
  • Front Derailleur Adapter DURA-ACE DI2 Front Derailleur Clamp Band Adapter 34.9 mm
  • Brake Cable SHIMANO ULTEGRA Brake Cable
  • Battery Mount SHIMANO Internal /External Wire Routing Short Size Battery Mount