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Kunray

Electric Brushless DC Motor Kit,48V 2000W Motor,33A Controller,LCD Throttle | 4300RPM High Speed Motor,15 Mosfet Controller,Power Display Throttle, Electric Scooter Motorcycle Mid Drive Motor, DIY Part

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Availability: Only 6 left in stock, order soon!
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Arrives Friday, Sep 11
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Size: 48V 2000W


Style: Complete Motor Kit


Features

  • Kunray MY1020 Brushless Motor Features: Electric Brushless DC Motor, Aluminum Body, Full Copper Coil, Heat Resistant, Naturally Air Cooled, Low Noise,ensuring reliable speed even on challenging terrains and less energy consumption.
  • Motor Type: Brushless DC High Speed Motor, Voltage 48V, Power 2000W Max, Current 42A, Rated Speed 4300rpm/min, With T8F 11Teeth Sprocket Chainwheel.
  • About Controller: 48V 2000W 15 Mosfet 33A Brushless Motor Speed Controller, With Hall Sensor, E-Brake, 3Speed (Low Mid High Speed), Reverse, Indicator Light And Power Lock Functions.
  • LCD Handlear Twist: 48V Lithium Battery LCD Screen Handlebar Throttle Twist Grips, With Power Indicator, Ignition Lock, Twist Throttle Accelerator 3 in 1 Function Handlebar Grip, With Rubber Grips
  • Application For: Electric Scooter, Motorcycle,Go Karts, Motorcycle, E Tricycle,Mid Drive Motor Kit, Complete Set,DIY Engine System, Cycling Part,And More.What You Get: 1pcs Motor, 1pcs Controler, 1pair Throttle, And Manual.

Description

The rated voltage of the BLDC motor is 48V, the peak power of the motor can reach 2000W, and the maximum current is 42A; under no-load conditions, the rated speed is 4300rpm/min, and the maximum is about 5400r/min, but it is best to use a 40-45A controller. The electric motor brushless is made of aluminum alloy material, which is able to resist oxidation, compression, vibration, and deformation. In addition, it is lightweight enough to carry and process with ease. The running direction of the motor can be changed by changing the wiring between the motor and the controller (reverse-counterclockwise) : Step 1: 3 thick yellow, green and blue wires (phase wires) : Controller to the motor - yellow to yellow, blue to green, green to blue; Step 2: 6 Hall Wires: Controller to the motor - blue to yellow, other unchanged. Featuring a full-copper coil and aluminum heat dissipation housing, the 48 volt motor boosts conductivity by 20%. Combined with heat dissipation holes, its core temperature remains within a reliable range even when operating continuously under 40℃ direct sunlight. With an IP57 waterproof and dustproof rating, it effectively blocks moisture and debris during rainy rides or muddy road travel, preventing short circuits. A reliable companion for outdoor adventures and suburban commuting Kunray's 48V 2000W brushless motor has a rated speed of 4300rpm/min and a maximum speed of 5700rpm/min. The controller has multi-function, 3-speed, reverse, indicator light, brake light and charging port. KRBC-15MOS, the controller adopts high quality motherboard and chip. HARD-BOOT-FUNCTION:For the sake of safe start-up, the controller defaults to soft stard, with a delay of 0.1 to 1 second for the handlebar. If you don't want a delay, you can connect the hard start cable of the controller. Two small wiring "hard boot" on the controller are connected by two thin white wires. Kunray Motor Heat Sink Aluminium Alloy Heatsink Cooling Fins for Razor MX650, MX500,& SX500,Kunray MY1020 Motor Convenient detachable heatsink that can fit the needs of different of different vehicle models. About after-sales service PHASE WIRE: yellow to yellow, blue to green, green to blue HALL WIRE: red - red, black - black, green - green, yellow - blue, blue - yellow Our BLDC motor is Aluminum and brushless , this type motor heat up is normal,temperature under 100°. is normal, if more than,STOP USE. and check wire connect ifcorrect. and contact with us for help. In our listing we write the speed is motor RPM ,and it is max RPM, IS NOT LOADSPEED.(km/h is according many conditions). motor controller 3-speed: LOW SPEED 50%,MID SPEED: 75%,HIGH SPEED: 100%.REVERSE: 50% Kunray Intelligent Tech Company is research, produce and sales of high-end electronic motor,controller,accessories for go kart and more About Kunray Brand Kunray Intelligent Tech Co., Ltd. is committed to independent research, development, production and sales of high-end electronic controller accessories such as electric scooters, go karts, electric motorcycle, etc. Please Note: Kunray Motor are Designed for off-road use only. Please Make Sure to check your local laws before riding. Kunray is not liable for any consequences due to unlawful use. Designed for off-road use, it cannot be driven on roads. You must abide by the local traffic regulations in your area!, Please check and Comply your local laws. Kunray company specialized in the research and development, production,and sales of electric travel products. Since its inception in 2010, the company has adhered to the concept of "technological innovation and quality-based" we developing electric skateboards, go-karts, electric motorcycles, and other products. In addition, it has gained widespread recognition In addition to sales, we can also undertake OEM orders, provide personalized solutions for different customers, and provide one-stop services.

Brand: Kunray


Model Name: Controller：BY15WF01-A Motor：BY1020


Speed: 4300 rpm


Voltage: 48 volts


Horsepower: 2000 watts


Brand Name: Kunray


Model Name: Controller：BY15WF01-A Motor：BY1020


Model: Motor：BY1020 Controller：BY15WF01-A


Manufacturer: Kun ray


UPC: 734779299142


Unit Count: 1 Count


Included Components: 1pcs Motor, 1pcs Controler, 1pair Throttle


Part Number: Kunray MY1020


Speed: 4300 rpm


Voltage: 48 volts


Horsepower: 2000 watts


Wattage: 2000 watts


Item Weight: 6 kg


Material Type: Aluminum


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Sep 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews

    • Initial Review
Size: 48V 2000W Style: Complete Motor Kit
Review Image by Ranbo
Review Image by Ranbo
Review Image by Ranbo
I have only received the motor/controller and am in the process of installing this system but it is being put in my own design so it will take a while for a comprehensive review. for now, I thought I would do the review on what I know. The motor and controller came in protective foam wrapping and box adequate for shipping. While there are nicks/scratches on the motor just like the product description states. these are cosmetic and are not going to affect the performance. If it bothers you the motor is nicely polished and a simple buffing can resolve it. I wish they had included mating connectors for everything. These are not STD that I can tell so for my project I will have to cut the ends and remark the cables and would surely void any warranty on the controller. Having mating connectors can prevent that. Once I have my project completed I an probably help supply a schematic that most people may be interested in using. What is odd the brake light and indicator light both show 48V output. That is a high voltage for lights, normal LED/lights for vehicles are 12V so will interesting to see if I can find lights or a way to step that down. Also, it is not clear if that changes to 60V if the SM 48V/60V wire is connected. Also, there is a reversing signal pigtail. Not clear how that is setup, but I assume a simple NO connection will do. I will edit this post as I find out more things, but for now the motor/controller was as expected. EDIT 3/6/2019 Added 2 photos and a video. I am building an Electric mower and using this motor to power. While some will say it is under powered for the job. I intend to show that most electric conversions have been grossly over powering the electric motor. You really do not need that much. First a image of the original mower, had a 18-20hp Twin Cylinder engine that I got after a son drained the oil but had no replacement oil and left with friends. Dad came home and mower yard and burnt engine up. Chassis is in perfect shape. The video shows a test spin, with no load. It was running about 1/4 throttle. As you can see the chain was loose so I did not run it fast. I am working on a chain tension system and better motor mounting. Again, this was only a test. The third picture shows where I made my mistake of only using the bottom mounts, When I put the wheels on the ground the motor and torque literally bent the motor mount. Fixable though. Some points on my setup: 1. I am currently running my mower on (2) 24V - 2ah electric drill batteries connected in series. Once I get the motor mounted and wired I will build a more appropriate battery stack. 2. REVERSE: For reverse all that is needed is to wire a flip switch into the connector. When flipped turning the throttle gives you reverse. It is that simple. That is it for now. Next steps are to look into the braking system and brake lights, ect. Since there are no opposing connectors, I have to replace and rewire all of the connections. Someone asked a question about the throttle graph not working. It DOES. But you have to provide over 42V. If not, it will only display the battery symbol and bottom bar of power. That is the indication that the battery is dead. I am also planning to provide a complete set of plans on using this motor for a conversion if anyone is interested. ... show more
Reviewed in the United States on January 29, 2019 by Ranbo
    • The moror and matierials is good quality
Size: 48V 2000W Style: Complete Motor Kit
It seams great i think it is clockwise though
Reviewed in the United States on May 25, 2026 by Ryan B.
    • Ok
Size: 48V 2000W Style: Complete Motor Kit
Could be better plans. Didnt work at first. Need tools to swap wires in connectors. Have reverse cable from ecu but no way of connecting it without separate switch. No matter how i switch the wires are the speed button 1-3 dont work from 1 slow 3 fastest. Other than that i seem somewhat ok. 4 12 v batteries dont make the quad go superfast so think it needs better battery for more power i guess. ... show more
Reviewed in the United States on June 22, 2026 by Steffen Hjortshoej
    • Great setup for the price
Size: 48V 2000W Style: Complete Motor Kit
Ended up putting this setup in my mini bike and it works great! I needed a new sprocket to match my existing #35 chain (the one it came with isn't the correct pitch). For reference it's a dual d bore or double d bore where its flat on 2 sides and rounded on the other. I also had to switch the direction of the motor to clockwise in order to work in my setup. There's other reviews mentioning this and a video you can find online. It consists on switching 2 motor wires and switching 2 of the motor phase wires. With a 10T front and 75T rear, I'm getting about a 23-25mph top speed. I'm also using a 48v 13.5ah battery and getting about 30-60 minutes of run time depending on the environment. ... show more
Reviewed in the United States on December 2, 2020 by Rob
    • Poor Quality: Don't Buy
Size: 48V 2000W Style: Complete Motor Kit
Review Image by Tyler Reigle
Review Image by Tyler Reigle
Review Image by Tyler Reigle
Review Image by Tyler Reigle
Review Image by Tyler Reigle
I was excited when I purchased this for an electric moped conversion I am doing. It arrived but I didn't examine the parts right away since I had work. When my weekend came and I examined everything, most of the parts were in poor condition. I am a lead engineering technician in the research and development department of a semiconductor company, and i'm really comfortable with electronics, quality and troubleshooting. First thing I noticed were several deep gouges, cosmetic scratches and melted plastic on the speed controller. Everything was wrapped up really well in foam so I know it wasn't from shipping. It looked like it was beat up and used but by looking at the connectors I know it wasn't used before. Whether this is made by this seller or bought from a vendor, it shows that they do not care about quality. I'm nitpicking the minor cosmetic issues because this also correlates to workmanship standards and gives me concern on whether or not this was built correctly. I do have to say that without taking it apart I can confirm that they have a higher gauge wire for the rating of the speed controller amp wise so from the outside that does bring some comfort. The second thing I noticed, is that the motor itself didn't have the air cooling plate appropriately drilled out. I noticed metal shavings on the outside and a couple on the inside of the holes. This screams a risk of arcing. 95% of the holes weren't drilled all the way through which is a rushed job. I also noticed that one of the screws on the motor is stripped out. This lets me know that they do not care about quality, and that there is no torque specification for these components or at least not done correctly. The third thing which really annoys me is the fact that this is borderline false advertisement. They advertise as it being a 2000 watt brushless motor but upon looking in the somewhat okay instruction manual states that you need a 40 amp speed controller to be able to get that or at least close to it. They claim they kit this motor with the 33 amp speed controller to help make the motor last longer and that it is really 1600 watts but those that have tested it have verified its much less than that. Overall, the poor quality, workmanship and misleading advertisement makes me believe this is not worth the price, the risk of injury and I hope that this review saves someone both time and money from buying this poorly made kit. I would give this a 0 out of 5 rating if I could. Edit: I've gone through with a multimeter and everything appears to be safe. No unexpected grounding and the continuity of everything seems about right. I will continue testing with the multimeter and will update the review as things progress. ... show more
Reviewed in the United States on January 15, 2021 by Tyler Reigle
    • Great unit
Size: 48V 2000W Style: Complete Motor Kit
Review Image by Tim c.
Review Image by Tim c.
Review Image by Tim c.
Bought a E dirtbike off of Amazon was advertised as a 500 W dirtbike top speed of 15 mph. The bike was slower than a razor MX 350 but appeared much larger so did some research. Bought this kit along with a lithium ion battery and the difference is amazing. I will try to upload a video for a comparison just to what the bike does now compared to a stock MX 350 razor this is not about insulting razor what so ever. The MX 350 is a excellent choice of bike for the money.It’s just a general comparison so you can see what the upgraded motor and lithium battery does to a E dirt bike ... show more
Reviewed in the United States on October 5, 2025 by Tim c.
    • Fast, powerful, but the controller gets smoking hot
Size: 48V 2000W Style: Complete Motor Kit
The motor is great. Barely even gets warm, but the controller seems to be under powered for the motor. I installed this setup on a drift trike (upgraded the Razor Drift). It works really well and has tons of power (i'm 200 pounds). The only issue is that the controller gets so hot after about 20 minutes of use that the wires will melt if I don;t stop and let it cool down. The casing of the controller gets too hot to touch. I've tried replacing the wiring from the motor to the controller, but that doesn't help. The only possible outcome is that the controller is under powered for this application. ... show more
Reviewed in the United States on April 23, 2023 by ripcurldog
    • Good upgrade for Razor MX
Size: 48V 2000W Style: Complete Motor Kit
Pretty good little upgrade for a Razor MX500. Installation was not too bad. Had to recess the head of two of the motor bolts as they were hitting the mounting bracket on the bike. Then had to cut off the extra length of the bolt that was sticking out the other side of the motor. Also had to cut off the aluminum mounting bracket on the motor as it is not needed and was in the way. Everything wired up pretty easily. Only little issue was the plugs on the controller for the brakes did not match the plugs on the brakes themselves. No big deal, just cut the plugs off the old controller and crimp them onto the new one. I paired this kit with a 48v, 18ah LiFePo4 battery from eBay and the bike goes for miles. My kids ride for several days without recharging. I am 200 lbs and it will pull me up to 26 mph on flat road. ... show more
Reviewed in the United States on June 9, 2022 by Adam Z.

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