It seems to be but it was so cold that it was a short miserable ride today. First warm day I'll know more. I also have a big red electric bike with two motors. I don't use it much now so I might just sell the two engines with the friction wheels and keep it for a regular bike. I still have to test ride the sissy with the electric motor. I think I'm going to slip it onto the bike trail and see what happens. I'm sure something will be said, but maybe not. I doubt that anyone can tell when I kick in the electric assist.