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Shimano SM-JC40 Junction Box for Dura Ace 9070, Ultegra Di2

Prezzo 20.77€

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