What's more, shifting the rear derailleur automatically trims the front derailleur. Designed to work with the wider gear pitch spacing Shimano chainsets without sacrificing shifting performance on bikes with 135 / 142 mm O.L.D.
Shimano Ultegra 6870 Di2 Groupset, 11 Speed, Rim Brake, Very Good Condition!
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Shimano Ultegra R8050 Di2 Groupset, 11 S, Rim Brake, Brand New! Read Description
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