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Ships within 48 hours · Estimated delivery Sep 19 - Sep 24
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Description
Shimano SM-JC40 Di2 External Frame Junction Box 4-PortShimano 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 Product Specifics Today's Stock
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/
Product Specifics
Today's Stock Status
UPC: 689228827448
EAN: Not available
Manufacturer Part Number: ISMJC40
CY6760
154980-Q0-L
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Good
Color: Silver
This is very good quality and I love the silver color, just exactly what I was looking for. The size is good. Very comfortable and it doesn’t weight too much. Very easy to use as well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
★★★★★ 5
It was exactly what was ordered and very timely.
Color: Gold+Silver
Very pleased.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
★★★★★ 4
Very pretty but not too flashy.
Size: 8 in
This bracelet is well made and good for everyday wear. I put it on as soon as I received it and haven’t taken it off since. It doesn’t snag on anything and is well worth the investment.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 13, 2025
★★★★★ 5
This ring is for any age. Cute.
Gem Type: Ruby, Ring Size: 5
I bought these for my granddaughter to go with the heart earrings I bought on Amazon.
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Reviewed in the United States on February 19, 2026
★★★★★ 5
Ecstatic quality
Gem Type: Ruby, Ring Size: 7
The color fit beauty is stunning exactly. What’s shown in the picture!! I’m very happy very good quality and value money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2026
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