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Shimano Di2 SM-JC41 Junction Box internal for EW-SD50 (2019)

ID: 761735
- £3
Incl. VAT, excl. shipping costs
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Product Description

E-Tube is a system platform for the Di2 concept (Digital Integrated Intelligence). E-Tube transmits interactive signals and supplies all electronic parts with power via "Plug & Play" connections. E-Tube is resistant to corrosion, expansion and frost and guarantees low maintenance. It offers optimal flexibility for your bike. With E-Tube Project you can customise the settings of electronic components and update the firmware via Windows PC or Tablet or Smartphone. It provides quick and easy access to information on electronic components and provides an immediate overview of the system status.


  • Number of E-Tube connections: 4
  • not suitable for Dura Ace Di2 7970
  • Version/Cable routing: Internal
Electronic shifting system  
Accessories electronic circuit  
Compatible with
Shimano Dura Ace Di2 9070/R9150, Ultegra Di2 6770/6870/R8050, Alfine/Nexus Di2, XTR Di2 M9050, XT Di2 M8050  
Weight: 4  g
Distributor for the bottom bracket area  
Content / delivery size
1 Shimano Di2 SM-JC41 Internal junction box for EW-SD50  
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