G020/G0900 48V 500W/750W Rear Hub Motor for 20"/26"/27.5"/700C Rear Wheel Bike,Ebike Conversion Kit with Battery & Display Options

I am very impressed with the power and price of all this. I used the bicycle kit with 3 three pin Julet extension wires. While there is lag in the throttle or pedal assist there is no lag to cut out the motor. Letting off the throttle or touching the brakes cuts power instantly. This thing will go right up a mountain now. I flat filed the dropouts a bit to hold the axle like a wrench. I am knowledgeable about bicycles, but never anything electric before this. I am pretty sure that an intelligent monkey could put this together. It was very simple.

Works great after getting a few specialty tools and new sprocket and battery. My only problem was lack of directions and manual for programing the display. The QR code was the only way to get any

This is my third Bafang conversion kit. I've been pleased with the first two. Installed them myself. Have not been able to get the pedal assist to work. Did all the trouble shooting I could find. Replaced the PAS sensor, cables and controller. Bafang and Greenergia have been no help at all. All they can recomend is replacing the sensor. I pointed out that I had already done that. I'm done dealing with them. No product support from Greenergia. Anyone want a cheap kit?

I ordered the 700c wheel, smallest battery, and color display. After some difficulties on installation(largely because I had to "shoehorn" the wheel into a slightly small dropout) the results have been far beyond expectations. After test rides my neighbor and 2 sons want to buy/take it. I would not recommend this project to everyone. A journeyman knowledge of tools and bicycles are highly desirable.

Keep in mind that this is a universal kit and you will have to do some fiddling to make it work on your bike. In my case the pedal sensor would not fit on my bottom bracket with interfering with the cone adjustment lugs, requiring a new one. Also the rim is an aero style which doesn’t make since on a 20’ wheel and requires a longer Schrader valve on the tube. I had some alignment problems and the flat lugs on the axle are just a little big for the dropouts. Performance is a mixed bag the motor is quite and has virtually no drag when unpowered making it good for regular pedaling there is a lot of lag when you push the throttle or begin to pedal higher power levels make the bike jump all at once after a couple of seconds and is a little unsafe. Motor seems very efficient and has a lot of power I may have to replace the controller to make it smoother and more safe

Works absolutely perfectly right out of the box. Installed on Trek with an extra small frame. Once cables were routed nicely, it is a nice looking kit. Added benefit that the throttle is tied to the pedal assist level, so you can basically choose your speed limit. Our other ebike was not tied to pedal assist, which has its own benefits. This is good for a beginner, as the throttle can feel a bit odd.

Significant latency between throttle input and motor response but overall a good value.

Love the kit! The motor is powerful, the display is excellent, all the parts I specified were included and fit properly, and the instructions (video) were very helpful. Even the add-on rear light works great and was a surprise; it's a brake light, not just a rear light. The battery I chose is also excellent. The only tiny thing I'd complain about is that the hardware for mounting the control box is only good for mounting it to a pretty narrow bike tube. For mounting to any medium-sized or fat bike tube, you'll need cable ties or silicone tape. Which I had, so no problem. Oh also for installing the PAS sensor, and for moving your cassette to the new wheel, you'll need 3 specialized bike tools: a crank puller, a chain wrench, and a cassette lock-ring tool. All of which I already had, so no problem. You might also need 2 adjustable wrenches.

DO NOT BUY THIS KIT. . . The controller unit it comes with is not compatible with many other parts. I bought the kit thinking I could use it with an already owned LCD display (because the product says you can). NOPE. The display connector on the control box is male(5pins), and almost every LCD display out there has the male end. So now I am either out +1000$, or I have to spend another 200$ buying thier display unit so it will be compatable.