Shimano SM-JC40 / SM-JC41 Junction Box For Di2

Shimano Junction Box SM-JC40 / SM-JC41 for Di2 – With 4 E-Tube connections
The Shimano junction box SM-JC40 or SM-JC41 for Di2 has four E-Tube connections and is used as the junction B mounted in the bottom bracket area. It can be used for all electronic groupsets from Ultegra Di2 6770 and before Dura-Ace R9250 or Ultegra R8150. SM-JC40 is for external, SM-JC41 for internal cable routing.
Information regarding the return of batteries and electrical equipment:Information on the return and disposal of batteries and electrical equipment can be found here.
Technical Information:Number of E-Tube Ports:4Number of E-Tube Connections:0Compatibility:Dura-Ace Di2 9070Dura-Ace Di2 R9150Ultegra Di2 6770Ultegra Di2 6870Ultegra Di2 R8050GRX Di2 RX815Alfine / Nexus Di2XTR Di2 M9050*XT Di2 M8050*
* instead of SM-BTC1 battery mount
Features:junction for the bottom bracket areaModels:external:
Type:for external cable routing (mounted on frame w/ bolts)Type:SM-JC40Manufacturer Number:I-SMJC40
internal:
Type:for internal cable routingType:SM-JC41Manufacturer Number:I-SMJC41Contents:1 x Shimano Di2 SM-JC40 junction box or SM-JC41