Powerful motor, simple to connect. Price bounced around a lot after I purchased it for $120.00

I bought this along with 12 volt battery and other things to upgrade my razor mx650. It took a while but worked well. Used to go 17 mph and now about 27 mph.

To be honest, I was not expecting this motor to be so powerful. The stock mx 650 can do maybe 18 mph, but with this, I can do almost 30.However, there are some small things to keep in mind. Luckily, alot of people already covered some smaller things, but I still feel this needs to be saidThe controller is verry fat. You are going to need to either find a funky spot to put this in, or extend the case out with a few washers. It's not that hard and makes a verry small diffence.Now this is a big thing. It can go even faster. Out if the box it does ~29 mph. However, there is a 3 speed wire plug that can make it go even faster. Now, I'm too scared to do this because I'm already doing wheelies (sometimes unexpectedly) but all you need to do is jump the black and blue wires on the 3 speed wires. I've heard it can typically do 34 with ease after you have done this.Lastly, the charger. If you want to keep your stock xlr charger on the side of your bike, that's fine, however, you are going to need to either find one on eBay for a 48 volt charger, or make your own. All you need is a regular 48 volt charger and an xlr cable. You are going to need to attach them to each other then you can have a charger. But my xlr cable had the 3 pin and the 2 pin switched so you might have to solder to switch. It's not that bad.Overall, I recommend this to anyone feeling up to the task. It's not that hard (other than having to drill holes in your frame to fit the screws) and it's over all a fun experience. I recommend learning to solder if you want to make the upgrade reliable and last much longer.Also, it's an awesome flex to go to leave your school going the speed limit. I always get funny looks when I'm keeping up with the flow of trafficOh yeah, it can also do wheelies. Have fun with that

Used this for a go-kart project and it's a great little motor for the job. Driving around for 10 minutes barely gets the motor warm, so it's got plenty of power for a go kart (can get my kart up to 25mph at top speed). It has good low end torque for a fast take-off, and even with an extra hundred pounds (my kid in the passenger seat) the motor barely noticed a difference and still had pretty much the same power. My setup is a 6:1 gear ratio (60 teeth on the wheel sprocket, 10 teeth on the motor sprocket).Connections were easy to make, and like others have said, the "electric lock" connector is what you should use to wire up an on/off switch. Reverse works well, but be aware that it does not go full speed just in reverse.If you are like me and needed to switch the direction of the motor (without using reverse), here are the instructions I found (from leafmotor blog) that worked for this motor/controller setup:For the 3 larger wires coming from the motor, you will want to wire them to the controller like this:Motor _ ControllerThick yellow wire _- Thick green wireThick green wire _- Thick yellow wireThick blue wire _ Thick blue wireFor the 5 smaller wires coming from the motor (hall effect sensor) you will want to wire them like this:Motor hall _ Controller hallThin yellow wire _ Thin yellow wireThin green wire _ Thin blue wireThin blue wire _ Thin green wireThin red wire _ Thin red wireThin black wire _ Thin black wireFor the hall effect wires, it's pretty easy to use a tiny flathead screwdriver and pop the connectors out of the harness and swap the blue and green wires.

great kit for the price should probably get better bolts for the motor though

I modified the sprocket at that time F8T not included in the package...and chain cant buy anywhere big hardwares in yuba city ca.

I have used this to drive a 22 ft sailboat for and it works great. Struggle with reverse a bit it does not have a lot of power in reverse.

This works great! I put it in a Razor MX500 and fit really well with a couple small modifications. There are a couple reviewers on here who explain it perfectly and several videos online that lay it out well. Big thanks to them, saved me a lot of aggravation. It absolutely flies now, very high speed and torque!

Great electric motor

Little tricky to wire but very good overall