I am a 60 yo women and I was able to fit the kit. So it is pretty easy to do. The only down side is that the magnetic disc does not fit properly on my pedal axle and get out of line easily as it is wobbly. I will try to have it glued in place for the next season. I was told that it was near impossible to change that part on the bike for one that would fit. Other thing that happened while climbing a hill, the front wheel kind of blocked suddenly. Not sure what was the issue there, I thought that if the battery was dead I would have been still able to ride the bike normally. So I had to walk with the bike up the hill. If this is caused by battery being dead, maybe it could warn us in advance.