The naked Z and the sporty Ninja are the two families most loved by fans of the Japanese manufacturer. Available with displacements over 650, from 2020 they were missing in the 400 segment, a perfect passageway for those who switch from 125 to higher displacements, always remaining in the range of motorcycles that can be ridden with an A2 license. Kawasaki has decided to return to produce the Z400 and Ninja 400 that will enrich its 2023 range. Both are equipped with a 399 cc liquid-cooled parallel twin engine that delivers 45 hp and 37 Nm of torque at 8,000 rpm, in line with the Euro 5 standard. The Z400 is born from the same Sugomi style that characterizes the naked sisters of higher displacement; it is equipped with an assisted slipper clutch and a trellis frame, just like the Z H2, the maxi among the Kawasaki naked bikes. The saddle at just 785 mm contributes to ease of riding, while for the taller there is the Ergo-fit saddle which improves riding comfort.
The sporty Ninja 400 is the gateway to the larger-displacement Ninja, such as the Zx-10R; it has a tubular trellis frame and a 286mm front disc brake mated to a 193mm rear one. Like its big sister, the Ninja 400 is also equipped with an assisted and slipper clutch that allows fast and smooth gear changes, reducing the effort to operate the lever by 20%.