In performance-mode, the front wheels and handlebars move closer together, and rider and bike-height drops closer to the road.
Once the traffic builds up and speeds come down, the front wheels and handlebars can separate, leaving the rider in a more comfortable, upright position with one handlebar in each hand.
Kawasaki has released no power or performance details for the J, but we do know that the concept has an all-electric drivetrain.
The Japanese bike-builder also hasn’t hinted at a future production-based version, although something along the lines of the before-mentioned MP3 in motorcycle-form is a possibility (albeit, unlikely).
The Tokyo Motor Show runs until December 1.