Introduced in 2018, the Kawasaki Ninja 400 was a redesign of the Ninja 300, featuring a class-leading 399cc twin-cylinder engine that put its predecessor to shame. Then, the Japanese manufacturer upped its game with the 2023 model, which produces 44.8 hp at 10,000 rpm and 27 lb-ft of torque at 8,000 rpm, but how fast is the Ninja 400 actually? It shouldn’t come as a surprise that a sportbike as popular as the Ninja 400 can reach impressive speeds.
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