hi there mate, i am getting one like in a few days, and the current owner of the bike says it goes 45-50 mph when it is DERESTRICTED...which is pretty crap to be honest, but the bike still looks the dogs bollocks, anyway, i´m sure that he hasnt got it fully de-restricted, so i can just get a garage to have a look at it. restricted they go about 40, which is gay with all those 6 gears, but having gears is so much better than just pulling back and going, anyway, i hope this answers ya question mate, cheers, Dan