Shimano has officially unveiled electronic shifting for its 12-speed ... crankset or the RX610 46/30t option. At the rear, the electronic derailleur is compatible with either an 11-34t Dura-Ace ...

Shimano CUES components have been available for flat bar bikes, electric bikes and mountain bikes for a couple of years now, but Shimano’s announcement of a new set of components finally extends CUES ...