Shimano EW-JC304 Di2 Junction Box - 4 Ports Use With EW-SD300

Expected Ship Date: Mon Jun 29
$34.00
$34.00
$34.00
Product Data
SKU:
CY8903
UPC/EAN:
192790597195
MPN:
IEWJC304
Description
Shimano EW-JC304 Di2 Junction Box - 4 Ports Use With EW-SD300. 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/