Originally Posted by takeitez
Just to clear some things up with what dragray said earlier it is not true that any engine will hit 50 mph and that it will just take a long time to get there. Most of these china engines will not get to 50mph because wind resistance gets to be to large. getting to 40 is easy and 45 is doable but 50 is really hard. (this is all with rear sprockets that are much smaller then stock)
ok, yeah 50 is pushing it, but i was using that as an example....not an actual speed.