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Shimano Di2 SM-JC41 Junction B Box

USD$21.99 27% off USD$29.99 msrp
Item #: EL250D02
USD$21.99 27% off USD$29.99 msrp
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This Di2 B- junction box "splits" the main wire from the A junction box and connects the front and rear derailleurs to the system. It can also connect the seatpost mounted battery to the system. Please note that this junction box is specifically made for frames that accomodate an internally routed system. Use an SM-JC40 for externally-routed frames.
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REVIEW SNAPSHOT®

by PowerReviews
Shimano Di2 SM-JC41 Junction B Box
 
4.5

(based on 2 reviews)

Ratings Distribution

  • 5 Stars

     

    (1)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

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    (0)

  • 1 Stars

     

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Reviewed by 2 customers

Displaying reviews 1-2

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4.0

Junction box B

By None

from Upland

About Me Casual/ Recreational

Verified Buyer

Pros

  • Lightweight

Cons

  • Expensive

Best Uses

  • Casual Riding
  • Mountain Biking
  • Racing
  • Road Biking

Comments about Shimano Di2 SM-JC41 Junction B Box:

This junction box works well, but why charge so much?

  • Was this a gift?:
  • No
 
5.0

Bike shifts, Box works

By Jay

from Medellin, Colombia

Verified Buyer

Comments about Shimano Di2 SM-JC41 Junction B Box:

This is hidden somewhere deep in the frame. And since the bike shifts, I assume this is working exactly as planned.

Displaying reviews 1-2

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Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.