the Kawasaki Ninja 400. Today, however, the Ninja 400 is nowhere to be found on Kawasaki's U.S. website. So, where did it go?

The Kawasaki Ninja 500 is an A2-ready middleweight sports bike that replaces the Ninja 400 in the Japanese firm’s ever-expanding line-up. It, along with its Z500 naked sibling, are the second ...