Firstly read the manual it tells you everything you will need to know! It was easy to fit. I have a heart condition and not ridden a real bike in over 4 years. But it took a ride with my daughter this week and the kit is fantastic, my daughter is 6 so I had to turn it off as I was too fast for her. But even being able to turn it off and ride it like a normal bike is great! But with the motor on it brought a huge smile to my face and a confidence to go out and ride again which I never thought I would be able to do so I can’t rate this highly enough it is great a real life changer for me! And a great experience getting back into doing work on my bike etc, I love it!