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How Does Shimano Di2 Synchro Shifting Work? | Electronic Bike Gear Shifts Explained | Smart electronic bike gears, how do they even work? Do they change from big to small ring without
SYNCHRONIZED SHIFTING NOW AVAILABLE FOR ULTEGRA 6800 AND DURA AC | SHIMANO INFORMATION & NEWS
Shimano launches 12-speed Ultegra R8100 groupset that's Di2 only | road.cc
How to Change Shimano Di2 Synchronized Shift Modes - mr. MAMIL
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Technical FAQ: Using Di2 Synchro Shift - VeloNews.com
How to Change Shimano Di2 Synchronized Shift Modes - mr. MAMIL
