I've had this kit for nearly a year now. This kit is constantly fluctuating in price so you could get this for roughly $80 which is insane value. The motor is the real valuable part but the stock controller with the proper battery can be alot of fun too. I have it fitted on a razor mx650 which requires the motor mount to be removed. This can theoretically fit any project. With stock gearing and a 14tooth front sprocket and a good 48v battery i was getting roughly 27ish mph with a 150lbs rider. It was decently quick but throttle was very touchy. If you know nothing about wiring something like this, I'd suggest watching a video because it can be confusing if you don't know what your looking at. The controller can be upgraded easily to something like a kelly controller that is much smoother and is able to be programmed as well. My current setup is the stock motor and controller that this kit comes with but with the "shunt mod" applied which takes this kit to an absolute monster for the price! I have it paired with a 52v 20ah Eon lithium battery pack and it absolutely rips! It does 37mph with stock rear gearing and a 14t front. It gets there really quick and will pick up the front wheel at any speed. Overall, if you are willing to learn there is really no limit but your pockets. I'd strongly recommend this kit if you can get it for under $100. Good luck!
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