The 2009 Kawasaki Ninja ZX-14 was designed in the wind tunnel for ultimate aerodynamics of not only the bike, but also the rider position. The low, narrow seat is very comfortable for long hours in the saddle, and the frame and ergonomics provide excellent wind protection, and controllability. The newly designed lightweight, monocoque frame is a hollow aluminum box that arches over the engine from the steering head to the swing arm pivot. All aspects of the frame have been designed to be rigid, light, and narrow. The engine is positioned forward in the frame to keep the weight distribution balanced for high-speed stability and responsive handling. The air box and filter are also contained within the frame, which not only saves space, but makes maintenance easier, as well.