I picked up a kit from Sal... super easy to install and it breathes some life into a cruiser that I use to take my 14 month old bike riding. You still have to pedal a bit up steep hills, but I can now go on long bike rides without worrying about hills as the cruiser only has one speed. I also use it to commute to work and back... saves gas money. A little under powered as far as I'm concerned, but does the job for what I need it for. I think that anyone who is serious about an electric bike would want to go with a 48 volt system.