The newest Ninja boasts of being the most potent 400cc motorcycle in the modern era, equipped with top-of-the-line components. It comes with a 399cc inline-four engine, which generates a remarkable 75.9 horsepower, and with the ram air effect, it can produce up to 79-HP. This output is an impressive 31 horsepower more than the Ninja 400, which has a twin-cylinder engine.
Watch this top speed test of a 2023 Kawasaki Ninja ZX4R on a public road.