The X flavors have much in common, featuring the same seamless magnesium alloy frame (instead the aviation-grade aluminum alloy frame on the D11) that tips the scales at just 3 kg (6.6 lb). The folding mechanism has been hidden inside the frame too, and cables are routed internally to preserve the clean lines. In ride-ready mode, the ebikes rock 150 x 58 x 100 cm (59 x 22.8 x 39.3 in) dimensions, but fold down to 84 x 40 x 59 cm (33 x 15.7 x 23.2 in) for between-ride transport.

They each come with a brushless geared motor for 40 Nm (29.5 lb.ft) of torque and 25 km/h (15.5-mph) top speed, a torque sensor system that responds to rider input for the promise of a more responsive assisted ride, and a Shimano 7-speed derailleur for ride flexibility. And rather than run a cable up to a seatpost light or bolt a front light onto the frame, like with the D11, the LED lighting for the new model has been integrated in the frame.