The iconic Kawasaki Ninja is back for its 40th anniversary, and unlike real ninjas, there’s nothing stealthy happening here, and this bike won’t stab you. From the loud & proud green paint job to the 300cc four-stroke parallel-twin engine, the Ninja 300 leaves nothing to hide.  A 40th birthday is also a good time to get some nips and tucks, and Kawasaki has seen fit to add a new frame, suspension, brakes, air induction and wheels. No word yet on a price.