Hello, I live in Vancouver B.C. Canada. I have been playing with the 2 stroke motorized bikes for a couple years now. I have 2 motors. The first one I purchased was a 49cc 2 stroke of unknown manufacturer but Chinese origin. It is nicely broken in and works well. I purchased an 80cc from Kings for a bit more power and it is on the bike currently. I used to read the Spitfire forums but I see they are gone now. Very nice to see another forum full of helpful people and good information!