2000W Electric Brushless DC Motor Kit - 48V 4300rpm Motor with Upgraded Speed Controller and Throttle Grip Kit for Go Karts E-Bike Motorcycle Scooter DIY

Shipped very good. Great kit for beginners. Very fast and functional, and great value for you money

Amazing value Installed two of these on Razor bikes Follow you tube instructions, not plug and play as far as the motor mounting you need to grind off the bracket and countersink the long bolts and grind off the excess ends. The controller has been upgraded and has more take off than last years model. Big improvement- can wheelie without the shunt mod. Super cheap 48v upgrade and get 23mph on mx650, sx500

I had a battle with myself on the review. And wish I could give it 5 stars. OK. The motor is absolutely wonderful! 1800 watts Powered by any 48 volt lithium battery, The motor over achieves! Top speed on speed 3 Is 33 miles an hour carrying 130lbs. Connections were well put together and easy enough To attach To make motor run. I installed this on a razor MX500 Where a bunch of modifications had to be made. I had to recess 2 bolts On the motor to make it fit. And I had to take the old sprocket off of the old 500 watt motor and fit it on to the 1800 watt motor To fit the chain. Which was easy enough. The cons: The switches! 3 speed switch Is cheaply built. I suggest buying an aftermarket 3 speed switch to fit as this 1 only 2 settings work Consistently But can be finagled to make all 3 work. 3 speed switch is also too small! It was terrifying trying to mount it Without the wires coming off of the switch. Throttle that came with the kit is cheap! Very hesitant When turned Takes forever to engage the motor. This is why I rated it 4 stars instead of 5 And I hope nobody takes offense. Just an honest review from a guy who never did anything like this before when it comes to electric Kits. And for a cheap MX500 build this is definitely the way to go! Just get a new hand throttle And a new 3 speed switch.

Comes with t8F sprockets, 2 of them for the drive shaft on the motor. I am using this to power my mobility scooter. It has great control, doesn't get hot, and works great. BUT...It is a slow start. Top speed with the 11 tooth drive, and a 28 tooth driven sprockets driving 10 in wheels is still 28mph. But, no torque. I'm gonna have to gear it way down , so it will have more power for hills. All in all, a good value. I don't see this powering a bicycle. A go cart, for sure. And going almost 30mph on a mobility scooter is kinda nuts, too. My old motor only got me 15 mph, but It would do wheelies for a block. No way this is 2000 watts, but the price reflects that. My old motor was 800 dollars, but it lasted 10 years. UPDATE: I got a 54 tooth sprocket for the drive wheels. Still does 25 mph on speed three, 7mph, on speed one, and 15mph on speed two. I can now go right across grass, and do wheelies!

Frankly, I am having one very big problem, already, and I have not even been able to install this thing, yet: The sprocket is too small for what I am doing, and I cannot even get the nut/washer/sprocket off to add a more appropriate size already on-hand. I have tried time and again to do this, and instead, it seems that it was put together so tightly (via a machine) that, instead of being able to do what I need for the sprocket, the nut & bolt are suddenly completely stripped (the nut will turn constantly, but it WILL NOT come off. which means that THIS thing is NOT built to be repaired or altered. And this is just for a basic and necessary modification. Overall, from what I am noting, right now, This was a complete waste of money.

Amazing I had put this motor on my mx350 with some modifications and I had went between 30-40mph the controller is light weight and compact to put in. Small spaces and thus is probably the best kit I've bought for my bike it came with all the bolts I needed and the wench was VERY USEFUL for the bolts the throttle had a very nice soft feeling the only thing that I would recommend getting is a better throttle because the one that's included has a slow response rate so I had got a different throttle made me go 0-30 in 8secs Amazing product for the price and great for starters

It’s a good motor but don’t get it for a razor mx350 unless you have a way to raise the motor because it hits a part of the frame.

Very powerful motor for price