The 2023 Ninja 400 produces 44.8 horsepower and 27 pound-feet of torque. At the top end, those ponies max out at 10,000 rpm even, while the grunt tops out at eight grand.

The "lower end" of Kawasaki's bike lineup is still no joke, as the high-revving Ninja 400 and the potent Ninja 650 offer ...