Shimano
Shimano SM-JC40 Di2 External Frame Junction Box 4-Port
MPN: ISMJC40 · UPC: 689228827448
$37.00
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🏪 Free pickup: 26 Essex St (Rear), Andover MA · 978-270-4895
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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
Bike Size Guide
| Size | Rider Height | Inseam |
|---|---|---|
| XS / 47-49cm | 5'0" – 5'3" | 27" – 29" |
| S / 51-52cm | 5'3" – 5'6" | 29" – 31" |
| M / 54-55cm | 5'6" – 5'9" | 31" – 33" |
| L / 56-58cm | 5'9" – 6'0" | 33" – 35" |
| XL / 59-61cm | 6'0" – 6'3" | 35" – 37" |
💡 This is a general guide. SOTO Cycles offers FREE basic bike fitting with every new bike purchased and picked up locally — we'll make sure your bike fits perfectly.
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$37.00
In Stock — Ready to Ship