The 2021 Ninja 400 is a lightweight sportbike that blends agile performance with everyday usability. Powered by a high-revving 399 cc parallel-twin engine, it delivers smooth, punchy acceleration. Built on a trellis steel frame with a compact profile, the Ninja 400 provides nimble handling for city rides or tight corners. Standard features include a 6-speed transmission, assist & slipper clutch, digital instrumentation, and a sporty riding position that’s comfortable yet aggressive. With its balance of performance, manageability, and style, the Ninja 400 is a great choice for both new and experienced riders.