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The Shimano Ultegra 8100 DI2 groupset is a semi-wireless electronic shift group with disc brakes. The Shimano Ultegra 8100 DI2 groupset gives you one of the best performance in terms of shifting and braking. Not only that, it gives you more confidence and certainty in the longer term.
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Review Shimano Ultegra R8170 DI2 Disc Groepset 12 Speed
