I'm thinking that if you are a pretty decent wrench, you could do it yourself on a flat bar bike. The drop bars did present some problems and when I talked to the authorized dealer in Portland he actually told me that. I decided to let him do the install. I was there to watch it. The only problem with doing the install yourself is that you are stuck with the default settings for the controller. We made some adjustments to the power delivered from the motor based on torque so that it would ride just the way I like it. We didn't do anything major, but it is noticeable. I had watched the install videos prior to my conversion, and they are pretty dead on for a flat bar bike. I still don't have the regen braking working quite the way it should. I'll have to make another visit to the dealer to see if he has any better ideas to make it work as intended. Otherwise, I'll have the regen mode disconnected for the brake actuated regen. I can still go into regen mode from the console.

The short answer is, if you are comfortable doing 90 percent of the work on your own bike (that's not me), you wouldn't have any problem installing the kit yourself.