New Shimano Dura-Ace will be 12 speed, wireless and... batteryless?

There have been predictions, rumours, speculation and an unconfirmed Instagram video leak by Remco Evenepoel, but now US patents filed by Shimano seem to confirm that the new Dura-Ace groupset will not only be 12 speed and wireless, but it could also use a piezoelectric element in the shifters instead of batteries. The patent application, […]