The US banned all two cycle atv's in 2006 due to emissions, however the banshee was still made up to 2011 in countries with less emissions restriction, but regardless yeah you are just plain not going to be able to go into a dealer and buy a brand new banshee. It is tough to even find a dealer that has them kicking around used but they are all over the classified adds at various prices and conditions.
I messed around a little bit with the banshee and got my chain installed and attempted to get some sort of air box fitted but I had no luck, the billet intake as well as the larger carbs make it almost impossible to get any type of air box installed. I am not too thrilled but I am just plain going to be forced to run individual pod filters. Speaking of carbs I am having some issues with the used carbs I purchased and it would cost nearly as much to rebuild them as it would be to buy new so that is what I did, I have two brand new carbs as well as pod filters and water resistant outer ware covers coming in the mail and as soon as they get here I am actually pretty much ready to ride and tune!! I also tossed on my foot pegs/ nerf bars to give me something to stand on.