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Shimano JC40 external Junction box for Shimano Di2 wire EW SD50 for Dura Ace 9070, Ultegra 6770, XT 8050, Alfine Di2, Nexus Di2| | - AliExpress
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Amazon.com : SHIMANO Nexus Di2 5 Speed CL Disc Brake Internal Bicycle Gear Hub - Sg-C7050-5D in Silver - 32H 135 x 187mm : Sports & Outdoors
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