Better late than never. A full decade after SRAM launched its game-changing wireless eTap system, Shimano has finally arrived at the party. Today, the Japanese giant officially enters the fully wireless drop-bar category with a 1x12 GRX Di2 drivetrain sans junction boxes, seatpost batteries or external wires of any kind.
The centrepiece of Shimano’s wireless debut is the GRX RX827 rear derailleur, which houses its own battery and takes shifting cues from any of Shimano’s existing wireless Di2 shifters. And while SRAM and Campagnolo got there first, Shimano is betting the wait was worth it.
