The Kawasaki Ninja 400 is a sports motorcycle part of the Ninja series in Kawasaki's range. The bike was unveiled at the 2017 Tokyo Motor Show and released in 2018 to replace the Kawasaki 300.
The reason why Kawasaki introduced the Ninja 400 was that the Ninja 300 was struggling with Euro4 emission standards. In addition, the Kawasaki Ninja 400 featured significant modifications to the engine, frame, suspension, and several other parts.
The bike was intended for the global market, while Euro4 compliance suggested it would be good enough for the European market. The bike was launched in the US on December 1, 2017, in February 2018 in Japan, and in April 2018 in India.
In 2018, the Japanese motorcycle manufacturer launched the Kawasaki Ninja 400 KRT Edition, where KRT means Kawasaki Racing Team. The bike offered an exclusive look inspired by the world of superbike racing teams and was available in Lime Green with Ebony at an MSRP of $5,500.
The bike was dressed in an aggressive and aerodynamic bodywork with a dual headlight system, a small windscreen, a two-piece dual seat, a single exhaust system with a silencer mounted on the right side, and five-spoke lightweight wheels.
The 2018 Kawasaki Ninja 400 KRT Edition had installed a 399cc four-stroke parallel-twin liquid-cooled engine underneath its fuel tank, delivering an output power of 49 hp with a peak force at 10,000 rpm and 38 Nm (28 lb-ft) torque at 8,000 rpm.