The Kawasaki Ninja 400 is a motorcycle designed for sport riding and is part of Kawasaki's Ninja lineup, which is known for its performance-oriented motorcycles. The Ninja 400 was introduced as a successor to the Ninja 300, offering several improvements and upgrades.
Compared to the Ninja 300, the Ninja 400 features a larger engine displacement, increased power output, and improved performance. The Ninja 400 is powered by a 399cc parallel-twin engine, providing more horsepower and torque than the Ninja 300's 296cc engine. This results in enhanced acceleration and top speed capabilities, making the Ninja 400 better suited for riders who crave more performance.
While the Ninja 300 was primarily targeted at entry-level riders and those seeking a lightweight and nimble sportbike, the Ninja 400 caters to a broader range of riders. It provides a more substantial platform and additional power, making it suitable for both novice riders who want room to grow into their bike and experienced riders who desire a smaller displacement motorcycle for commuting or track days.
As for the Ninja 650, it belongs to a different category within Kawasaki's lineup. The Ninja 650 is classified as a middleweight sport-touring motorcycle, offering a larger displacement (649cc) and more touring-oriented features. The Ninja 650 provides a balance between sporty performance and comfort, with a focus on long-distance riding and versatility. It is better suited for riders looking for a more comfortable riding position and the ability to tackle both spirited riding and extended journeys.
In summary, the purpose of the Kawasaki Ninja 400 relative to the Ninja 300 and Ninja 650 is to provide a step-up option for riders who want a sportier and more powerful motorcycle than the Ninja 300 while still being approachable for entry-level riders. It fills the gap between the lightweight and beginner-friendly Ninja 300 and the larger, more touring-oriented Ninja 650.