primitive internal combustion engine, powered by tank of burning fossils. easily distinguishing by voluminous clouds of blue smoke. Favourite bike choice of sooky floundering bench racers complaining of fouled spark plugs and cracked reed valves, whilst prophecising the ease of the 12 "simple & inexpensive" rebuilds per annum. get an effie and learn to ride!!!
completely blinded by unwaivering devotion to neanderthal technology 'kx250' could not see that his two smoke clanger is a piece of junk