--- product_id: 72466996 title: "Electric Brushless DC Motor Complete Kit, 48V 2000W 4300RPM High Speed Motor, with 33A 15 Mosfet Controller, Power Display LCD Throttle, Electric Scooter Bicycle Motorcycle Mid Drive Motor, DIY Part" brand: "kunray" price: "$547.48" currency: USD in_stock: true reviews_count: 11 category: "Kunray" url: https://www.desertcart.us/products/72466996-electric-brushless-dc-motor-complete-kit-48v-2000w-4300rpm-high store_origin: US region: United States of America --- # 2000W peak power 48V high-voltage system 4300 RPM max speed Electric Brushless DC Motor Complete Kit, 48V 2000W 4300RPM High Speed Motor, with 33A 15 Mosfet Controller, Power Display LCD Throttle, Electric Scooter Bicycle Motorcycle Mid Drive Motor, DIY Part **Brand:** kunray **Price:** $547.48 **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade your ride, dominate every terrain — DIY electric power redefined! ## Quick Answers - **What is this?** Electric Brushless DC Motor Complete Kit, 48V 2000W 4300RPM High Speed Motor, with 33A 15 Mosfet Controller, Power Display LCD Throttle, Electric Scooter Bicycle Motorcycle Mid Drive Motor, DIY Part by kunray - **How much does it cost?** $547.48 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/72466996-electric-brushless-dc-motor-complete-kit-48v-2000w-4300rpm-high) ## Best For - kunray enthusiasts ## Why This Product - Trusted kunray brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Control:** 33A 15-MOSFET controller with 3-speed modes, reverse, and e-brake for ultimate ride customization. - • **Smart LCD Throttle:** Integrated power display and ignition lock in a sleek twist grip for intuitive, on-the-go monitoring. - • **Durable & Efficient:** Aluminum body with full copper coil and natural air cooling ensures quiet, heat-resistant reliability. - • **DIY-Ready Versatility:** Complete mid-drive kit perfect for scooters, e-bikes, motorcycles, and custom electric projects. - • **Powerhouse Performance:** Unleash 2000W of brushless torque for unstoppable acceleration and hill-climbing prowess. ## Overview This Kunray 48V 2000W brushless DC motor kit delivers a high-speed 4300 RPM motor paired with a 33A 15-MOSFET controller featuring hall sensors, e-brake, reverse, and a power-display LCD throttle. Built with an aluminum body and full copper coil, it offers heat resistance and quiet operation. Designed for electric scooters, bikes, motorcycles, and DIY conversions, this complete mid-drive kit empowers professionals and enthusiasts to build powerful, efficient, and customizable electric vehicles. ## Description Product description 48V 2000W Motor 2000W 48V DC BRUSHLESS MOTOR POWERFUL 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. T8F 11T SPROCKET, and WITH RADIATING HOLES 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. POSITIVE & NEGATIVE ROTATION DESIGN 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. 2000W Brushless Motor High Quality Motor, All copper movement Sprocket: T8F 11T Magnet Poles: 6 pairs / 12 pieces Kunray's 48V 2000W brushless motor has a rated speed of 4300rpm/min and a maximum speed of 5700rpm/min. 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. Always yield to pedestrians and obey traffic regulations. Riding on sidewalks may be prohibited, Please check and Comply your local laws. Rate Voltage: 48V Rate Power: 2000W Rate Current: 42A Rate Speed: 4300rpm/min Max Speed: 5700rpm/min Torque: 5.1N.m Load Weight: about 150-200KG Brushless Controller 33A Rate Current: 33A Mosfet: 15 MOS Phase Degree: 120° Multiple Functions The controller has multi-function, 3-speed, reverse, indicator light, brake light and charging port. Please be sure to turn off the power when connecting the cables to avoid short circuits. Disassemble the controller: please turn off the main power first, then open the electric e-lock, wait a few minutes to discharge the electricity in the capacitor High Quality Controller 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 Kunray Motor Heat Sink Aluminium Alloy Heatsink Cooling Fins for Razor MX650, MX500,& SX500,Kunray MY1020 Motor Removable Heatsink Convenient detachable heatsink that can fit the needs of different of different vehicle models. The Detailed Dimensions of he 2000W Motor Please carefully check the size of our 2000W motor to see if it matches your product and is suitable for your use. The 2000W motor is a motor equipped with an installation bracket. (A motor with a base). About after-sales service If you find that the product appears after receiving the product If you find that the product appears after receiving the product: there are scratches, rust stains, the product has missing parts, there is damage, etc., there are any defects. Please tell us, we will be happy to solve your problem. Inform: In the process of your return, if we find that the returned product is inconsistent with the received product, we will reserve the responsibility of the buyer! The E-Motor is Good for Electric Scooter, Mini Motorcycle,Electric Go karts, Quad car，Other DIY project and more. When you receive the product, if there are missing parts, please contact the online staff immediately. Motor, controller maintenance one year, other parts series is half a year. If there is any problem in use, please feel free to contact our after-sales team, or online staff. We are always at your service. This device is not a toy. Please keep it away from children. Please do not touch the motor with your body during use to avoid burns. Please read the installation instructions carefully before use to avoid damaging your device. This product does not come with a battery or a charger. QA How do I change the direction of motor operation? PHASE WIRE: yellow to yellow, blue to green, green to blue HALL WIRE: red - red, black - black, green - green, yellow - blue, blue - yellow Motor heat up quickly? 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. About motor speed and controller high/low speed functions? 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% Review: Initial Review - 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. Review: Great unit - Bought a E dirtbike off of desertcart 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 ## 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07G2LZHD8 | | Best Sellers Rank | #44,312 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1 in Scooter Motors | | Brand | Kunray | | Brand Name | Kunray | | Customer Reviews | 4.2 out of 5 stars 222 Reviews | | Horsepower | 2000 Watts | | Included Components | 1pcs Motor, 1pcs Controler, 1pair Throttle | | Item Weight | 6 Kilograms | | Manufacturer | Kun ray | | Material | Aluminum | | Material Type | Aluminum | | Model | Motor：BY1020 Controller：BY15WF01-A | | Model Name | Controller：BY15WF01-A Motor：BY1020 | | Part Number | Kunray MY1020 | | Speed | 4300 RPM | | UPC | 734779299142 | | Unit Count | 1 Count | | Voltage | 48 Volts | | Wattage | 2000 watts | ## Product Details - **Brand:** Kunray - **Horsepower:** 2000 Watts - **Model Name:** Controller：BY15WF01-A Motor：BY1020 - **Speed:** 4300 RPM - **Voltage:** 48 Volts ## Images ![Electric Brushless DC Motor Complete Kit, 48V 2000W 4300RPM High Speed Motor, with 33A 15 Mosfet Controller, Power Display LCD Throttle, Electric Scooter Bicycle Motorcycle Mid Drive Motor, DIY Part - Image 1](https://m.media-amazon.com/images/I/717XdGAID3L.jpg) ![Electric Brushless DC Motor Complete Kit, 48V 2000W 4300RPM High Speed Motor, with 33A 15 Mosfet Controller, Power Display LCD Throttle, Electric Scooter Bicycle Motorcycle Mid Drive Motor, DIY Part - Image 2](https://m.media-amazon.com/images/I/719nxQQrWfL.jpg) ![Electric Brushless DC Motor Complete Kit, 48V 2000W 4300RPM High Speed Motor, with 33A 15 Mosfet Controller, Power Display LCD Throttle, Electric Scooter Bicycle Motorcycle Mid Drive Motor, DIY Part - Image 3](https://m.media-amazon.com/images/I/61dOkSfYE0L.jpg) ![Electric Brushless DC Motor Complete Kit, 48V 2000W 4300RPM High Speed Motor, with 33A 15 Mosfet Controller, Power Display LCD Throttle, Electric Scooter Bicycle Motorcycle Mid Drive Motor, DIY Part - Image 4](https://m.media-amazon.com/images/I/610FAroFcML.jpg) ![Electric Brushless DC Motor Complete Kit, 48V 2000W 4300RPM High Speed Motor, with 33A 15 Mosfet Controller, Power Display LCD Throttle, Electric Scooter Bicycle Motorcycle Mid Drive Motor, DIY Part - Image 5](https://m.media-amazon.com/images/I/81S0sHH1jAL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: How fast will it go mph** A: Dear Friend, 1.The load speed is according to your wheel size , chainwhell teeth,and driver and scooter weight. 2.but I can tell you the speed how to Calculate: speed = bike wheel perimeter*RPM ( your chainwheel teeth /our motor 11teeth)*60/1000 3.our motor rpm is 4300rpm and use 11teeth sprocket. ex: IF YOU USE 64Teeth plate. so Gear Rato is : 64/11=5.8. so, rpm is4300/5.8= 740RPM. if you use for 8inch wheel. so the speed is : 0.2m(is wheel perimeter）*780*60/1000=28km/h about . **Q: This motor should be used only with lithium batteries? It does not work as lead, I have a brush motor scooter and it has lead batteries so the questio** A: I see no reason why this would not work with lead-acid batteries. I used it with a 48 volt, 1,000 watt power supply. **Q: ?Need to reverse the polarity to run the motor in reverse. I’ve switched a combination of two terminals, but still not getting the desired effect.** A: You need to switch the yellow, blue and green cables. These are the cables that control the motor direction. It is actually trial and error. This is the same as the front wheel motors. **Q: i bought a lithium ion battery with the xt60 connectors but this motor kit has rings. what do i do to change it?** A: Take out the fuse splice the wire to the type you want and Walla ## Customer Reviews ### ⭐⭐⭐⭐⭐ Initial Review *by A***R on January 29, 2019* 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. ### ⭐⭐⭐⭐⭐ Great unit *by T***. on October 5, 2025* 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 ### ⭐⭐⭐⭐⭐ Good cheap upgrade! *by C***! on February 24, 2025* i bought this to help my Razor MX650 pull me along! i’m a 200lbs man and the stock motor just had enough power to get me going! it would not be able to pull me on the slightest incline! this 48volt/2000w motor is a huge upgrade! i can ride the razor up inclines and able to get to 20mph! very happy with this! ## Frequently Bought Together - Electric Brushless DC Motor Complete Kit, 48V 2000W 4300RPM High Speed Motor, With 33A 15 Mosfet Controller, Battery Display LCD Throttle, Electric Scooter Bicycle Motorcycle Mid Drive Motor, DIY Part - Alomejor Motor Sprocket 25H 13T Metal Electric Scooter Motor Engine Sprocket Chain Wheel for MY1020 Motor --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/72466996-electric-brushless-dc-motor-complete-kit-48v-2000w-4300rpm-high](https://www.desertcart.us/products/72466996-electric-brushless-dc-motor-complete-kit-48v-2000w-4300rpm-high) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-13*