Product Description
Shimano Di2 Frame Junction Box
Product Specifications
- Dimensions (Overall): 4.0 inches (H) x 4.5 inches (W) x 9.0 inches (D)
- Weight: .11 ounces
- Bike compatibility: Universal
- Package Quantity: 1
- Warranty: Multiple Warranties and/or Time Frames Apply. To obtain a copy of the manufacturer’s or supplier’s warranty for this item prior to purchasing the item, please call Target Guest Services at 1-800-591-3869
Product Highlights
- 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/
- Frame Junction Box connects via SD50 E-tube wires to four different points: front derailleur, rear derailleur, cockpit junction box and battery mount
- Mounts underneath the bottom bracket shell
- MPN: ISMJC40, UPC: 689228827448






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