Shimano SM-JC40 / SM-JC41 Junction Box


Base price:39.84 $
Current price:39.84 $
Reduction:terms-11.95 $
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  • Description
  • Specifications
Shimano SM-JC40 Junction Box for Dura Ace 9070, Ultegra Di2 Alfine Di2, Nexus Di2 external

Junction box for Shimano Di2 wire EW-SD50 with external routing. The junction box is for mounting under the bottom bracket. Front/rear derailleur, cockpit area and battery are connected here.

Note: Only compatible with Dura Ace 9070, Ultegra 6770, Alfine Di2 and Nexus Di2. Not compatible with Dura Ace 7970 Di2.


Shimano SM-JC41 Junction Box for Dura Ace 9070, Ultegra Di2 and Alfine Di2 internal

Junction box for Shimano Di2 cable EW-SD50 with internal routing. Front/rear derailleur, cockpit area and battery are connected here. Only for use in compatible frames!

Note: Only compatible with Dura Ace 9070, Ultegra 6870 / 6770 and Alfine Di2. Not compatible with Dura Ace 7970 Di2.
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