The Ninja ZX-4R ABS mounts a 399cc in-line 4-cylinder engine with class-leading performance in a compact chassis with proportions similar to smaller displacement models. On the track or on the street, experience the exhilaration of the Ninja ZX-4R ABS supersport's unprecedented power, intoxicating high-rpm wail, and sharp, nimble handing that will awaken the dormant supersport within you.