The perfect answer for my lightweight folding bike! I had struggled to make the hills before and thought I would only be using the bike around campgrounds and flat trails. Now I can ride all the bike paths I love. I am an 80+ year old woman and put the kit on all by myself! Getting the magnet disk on was a little tricky and I had to get a 2.5 MM hex end to remove the disk arm which I did not need. Other than being held up by that, the kit went on easily. Fun ride!