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NEW Shimano SM-JC40 Di2 External Frame Junction Box 4-Port

NEW Shimano SM-JC40 Di2 External Frame Junction Box 4-Port

$ 37.00 USD
$ 37.00 USD $ 37.00 USD
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Item Available In Store
ATC SKU: 210000075318
UPC: 689228827448
EAN: 4524667827443
MFG. SKU: ISMJC40
Other IDs: 092003520
CY6760

PRODUCT DETAILS

Shimano Di2 Frame Junction Box

  • Frame Junction Box connects via SD50 E-tube wires to four different points: front derailleur, rear derailleur, 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
California Prop 65 Warning:
This product may contain chemicals known to the state of California to cause cancer and birth defects or other reproductive harm. (California law requires this warning be given to customers in the state of California.)
California CBE Fees:
Some products we sell may be subject to California’s Covered Battery-Embedded (CBE) Waste Recycling Fee (effective January 1, 2026) when a product contains a non-removable rechargeable battery. If applicable, the fee (1.5% fee with a $15 max per item) will either be added to your cart as a separate line item or be invoiced after your order is placed and before it can be fulfilled.
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