Launched as part of its Eagle mountain bike line in 2023, the SRAM Transmission is a 1x 12-speed wireless electronic drivetrain that is not only free of any wires, it also functions without a ...

My review is here. Although the new Red 2x launched as a 12-speed drivetrain, SRAM is debuting its first 13-speed drivetrain with XPLR. The new cassette employs familiar SRAM design and technologies.