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Shimano E-Tube Di2 Internal Junction B Box

Shimano E-Tube Di2 Internal Junction B Box

Shimano E-Tube Di2 Internal Junction B Box

The Shimano Di2 SM-JC41 is designed to connect SD50 E-tube wires along four points; front derailleur, rear derailleur, cockpit junction and battery mount.

The B-Box is used to split the main wire from Junction A to the front and rear derailleurs. It can also be used to connect a seatpost mounted battery to the system.

Specifically designed for internally mounted systems - for External use SM-JC40.
$37.99
Shimano E-Tube Di2 Internal Junction B Box
$37.99

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Shimano E-Tube Di2 Internal Junction B Box

The Shimano Di2 SM-JC41 is designed to connect SD50 E-tube wires along four points; front derailleur, rear derailleur, cockpit junction and battery mount.

The B-Box is used to split the main wire from Junction A to the front and rear derailleurs. It can also be used to connect a seatpost mounted battery to the system.

Specifically designed for internally mounted systems - for External use SM-JC40.