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

Expected Ship Date: Mon Jun 29
$37.00
$37.00
$37.00
4 In Stock
Product Data
SKU:
CY6760
UPC/EAN:
689228827448
MPN:
ISMJC40
Description
Shimano SM-JC40 Di2 External Frame Junction Box 4-Port. 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/