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Bikes & Frames
Components
Accessories
Maintenance
Apparel
Nutrition
Bikepacking
Outdoor
Sale
Shimano
JC40 Di2 External Frame Junction Box 4-Port
Own it now for
$33
99
orig: $35
99
save 6%
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$37
88
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Frame Junction Box connects via SD50 E-tube wires to four different points: front derailleur, rear deailleur, cockpit junction box and battery mount
All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions
Use Di2 system checker to update component firmware from http://e-tubeproject.shimano.com/
Mounts underneath the bottom bracket shell
UPC
689228827448
MPN
ISMJC40
Tree Fort ID:
333222381600
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