SHIMANO SM-JC 40 JUNCTION (B) BOX 4 PORT
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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.
PRODUCT SPECIFICATIONS
| MODEL NO | SM-JC40 |
| SERIES | ULTEGRA R8050 Series |
| Average weight | 8.6 |
| Type | External type |
| SD300 connector (pcs) | 0 |
| SD300 port (pcs) | 0 |
| SD50 connector (pcs) | 0 |
| SD50 port (pcs) | 4 |
TECHNOLOGIES
