I think it is because of the pollution factor. 2 cycles pollute more than 4 cycles. I agree with that and would have bought a 4 cycle but as we are going out of the country for 4 years or so I wanted the 2 cycle becaue it is easier to work on and the parts are many. It is so easy to get parts anywhere in the world for a 2cycle engine. The 4 cycle has not caught on in places like the South Pacific or Indian Ocean where fishermen can not afford the more expensive 4 cycles. To the best of my knowledge that is the reason and I wonder if they are making the ugly jet ski industry go to 4 cycle engines too.