What does KX stand for on Kawasaki?

In the context of Kawasaki, I'm curious to know: what does the abbreviation "KX" represent? Is it a specific model, a feature, or perhaps a technological advancement within Kawasaki's extensive product line? Understanding this abbreviation could provide valuable insights into Kawasaki's latest offerings or their overall brand strategy. Clarifying the meaning of "KX" would be particularly relevant for enthusiasts and potential customers who are interested in Kawasaki's motorcycles, engines, or other products.