Shimano brings Synchro Shift to Ultegra 6800 & Dura-Ace 9000 via battery & firmware update - Bikerumor
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SYNCHRONIZED SHIFTING NOW AVAILABLE FOR ULTEGRA 6800 AND DURA AC | SHIMANO INFORMATION & NEWS
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SYNCHRONIZED SHIFTING NOW AVAILABLE FOR ULTEGRA 6800 AND DURA AC | SHIMANO INFORMATION & NEWS