Shimano Di2 11 Speed SM-JC41 Junction B Box 4-Port, in great working condition
USD 15.00 USD
Specifications
| Brand | Shimano |
| Model | ISMJC41 |
| Item Weight | 10g |
This Di2 B- junction box "splits" the main wire from the A junction box. It is a simple, small hub that has 4 female connectors and serves as the junction point in the bottom bracket area. This is a previously installed and removed Shimano Di2 11 Speed SM-JC41 Junction B Box in great working condition.
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