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Shimano
Shimano EW-JC304 Di2 Junction Box
Shimano EW-JC304 Di2 Junction Box
Regular price
$28.99
Sale price
$28.99
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Product ID: GM060624-02
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View full detailsDescription
Shimano EW-JC304 Di2 Junction Box
- Shimano Di2 Frame Junction Box
- Connects via SD-300 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
- Number of Ports: 4
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