BestEquip Electric DC Motor, 2KW 48V Brushless Motor Kit 4300rpm High Speed Electric Scooter Motor for Go Kart Bike Motorcycle with Speed Controller, Throttle, Keylock

I put this on my 6 year old's MX650 (he's been riding bikes since he was 2, so hold your judgement). I did this upgrade because his bike was overheating with the stock controller/motor and upgraded 48v 20ah LiFePo battery. I added a 3 speed switch to the controller (like $7). He has used all 3 levels. Level 1 goes to about 19mph, level 2 25mph, and level 3 31mph. Torque changes are minimal between levels. This motor and control have much more torque than the stock motor and control with an upgraded battery, which is great for the grass/hills.My only qualm is that 100% of the torque hits when the throttle first engages (when you slightly turn the throttle), even with the 3 speed switch wired to the controller. This makes it difficult for a young/light riders at low speeds, especially on the pavement. I wish I could tune it somehow, but it seems that I'd need a new controller to do that. Not much of an issue on the grass, except for him leaving bare spots 😁I've considered simply increasing the motor sprocket tooth count, which would reduce torque overall and increase top speed, but he likes/needs that torque for hills etc. and he definitely doesn't need more top speed. I'm not giving up yet, I'll try to update if I find a solutionOverall, it's been a great upgrade, which has fixed the overheating issue. He can ride for hours on end without the bike holding him back. I'd still like smoother torque delivery to reduce the abrupt load on the motor and make low speed manuevers more controlled. However, it's not a deal breaker, especially at less than $150.Side Note: I am an experienced electric bike rider. I have a Talaria Sting R, which has way more power and I wheelie it all the time, but the torque delivery is much better. I had a Surron before my Talaria R too.

They sent me a vevor motor and controller and Yes this fits a razor dirt bike. You have to cut the motor tabs and counter sink screws for the motor to fit and the rest is up to you I will update this when the battery comes in…Three month update it runs great and still strong. It has gotten me to 32 before but I haven’t in a month or so it tops at 30 now. I would for sure recommend this kit just know it takes a little modification to fit a mx650.

UPDATED: I was wiring up a headlight on this controller, and the wiring diagram does not show voltage on the output for the lamps. I grabbed my multimeter and tried checking, but the connectors ARC'ED and burnt my finger tips horribly (the photo is from after I washed the black char off). I have no feeling in 2 of my fingertips now and a nice blue dot in my vision from the arc flash. Turns out the output for the voltage is full, unregulated, 48 volts with high amps from the battery. Extremely dangerous not to tell people this. Not only did my fingers get charred, my brake light blew up and now I need a new one. Buyer bewareI finally finished the mini atv that this was going on. i weigh 150lb, i estimate that the atv weighs about 70 lb or so, and the thing cant even make it up any tiny incline. It does great on flat ground with a top speed of around 25mph. i hijacked the motor signal wire into a potentiometer to limit the max speed and make it kid-friendly with the ability for adults to have fun on it tooIt works well in clockwise rotation. I tried every combination (including the directions included with the motor that made it so the motor did not rotate at all) of the phase wires to get counterclockwise to work right but couldnt get it. I was able to get it to spin in reverese, but not at max speed and the rotation was not smooth. On top of that I could not get the 3 speed switch or reverse switch to function while motor was rotating counterclockwise. I then went on to re-pin the hall effect sensor harness to match my phase wires and that reverted the motor back to clockwise rotation. Long story short, mount the motor so that it is going to be rotating clockwise and save yourself a couple days of messing with wires. 2 cuts with an angle grinder and some welding was way faster than trying to figure out how to make it function in reverse.

The title specified the BLDC motor and drive to be rated to 2000W and specified 48V and 42A (48Vdc x 42A = 2016W) so I was a little taken back when opening the box and finding the label on the drive to specify max current of 34A. In spite of that the motor and drive seems to have adequate power for my application, and installation was straightforward. I also took apart the motor to take a peek inside and have posted a picture for people that may be interested. 6 pole motor with surface mount magnets on the rotor. The stator is concentrated coil type with embedded Hall effect sensors for commutation. Both aluminum end bells of the motor enclosure have numerous ventilation holes for inlet/exit of air for cooling. Seems to run fairly cool even after 30 minutes of continuous use.

good for single person scooter, but a wee bit under powered for a kids 2 seater go kart. gunna install a second one to get the necessary power needed. but still a good little motor. the controller wiring NEEDS better instructions/explanation on what is what and/or what it does.

The media could not be loaded. I got my son a SYX 50cc dirt bike for Christmas a couple years back. Bike didn’t work for long- spark plug wire issue. So it sat for months. I got this kit and literally bolted it on and it worked! Running a 12s3p p42a E skate battery and the thing flies. With my son (10yr old, 75lb) the bike goes 40+mph and goes further than a tank of gas would before. So happy with this kit. I already have another that I’m putting in another frame. Great product!