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KR5V V2 Electric Brushless DC Motor 72V 5000W 6800rpm Peak | Brushless DC Motor Electric Dirt Bike Motor Peak 10KW for Go Kart Razor Upgrade Kit Motorcycle Upgraded DIY Easy Install

  • Based on 31 reviews
Condition: New
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Availability: 14 left in stock
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Arrives Wednesday, Aug 19
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Size: 72V 5000W


Style: Upgraded Brushless DC Motor


Features

  • Electric Brushless DC Motor ParametersElectric DC Motor Rated Vol 72V,Rated Watt 5000W, Peak 10KW, Rated Speed 6900rpm, Peak 8000rpm, Rated Torque 8.5N.m, Peak 35N.m,Rated Current 60A, Peak 80-100A. Mid Drive Motor Pure Copper Core, Max Efficiency 90%, Energy Saving,#35 9t sprocket, compatible with #35 chain. For optimal performance, we recommend pairing it with 80-100A programmable controllers (we have 72V 5000W motor kit in our store).
  • Electric DC Motor New Upgrade V-Magnet RotorKR5V Electric DC Motor Upgrade V-Magnet Rotor 5 Pair Magnet Poles, 72V Motor With KTY84-130 Temp Sensor, You Can Adjust the Temperature Through the Programming BLDC Motor Controller to Better Protect the Motor and Extend the Service Life of the Motor.
  • Electric Dirt Bike Motor With HeatsinkElectric Go kart Motor With New Design Add the HeatSink, Air Cooling, Class F(155C),Electric Motorcycle Motor IP54 Waterproof, 100% Full Copper and Aluminum Body , The Brushless Motor Kit With Fardriver BLDC Controller Current 100A, Phase Current 300A, 18mos High Quality Motor Controller. (suggest use the 80-100A max for the motor) NOTE: DONT TOUCH THE MOTOR WITH YOUR BODY WHEN IT WORKING HEAT UP.
  • 72V Motor New Design Hall Sensor ExtenalPowerful Mid Drive Motor Hall Sensor Extenal, The Hall sensor install in the Back Cover It is Not Easy to Burn out Compared to Placing it Inside The Motor, Note: Please do not Take Out The Screw On the Hall Sensor , Otherwise The Electric Motor Will Not Running Well.
  • 5KW Electric DC Motor Wide ApplicationElectric Motor Kit for Go Kart ,Electric Dirt Bike Motor, Brushless Mid Drive Motor For Razor Upgrade Kit MX500 MX650 SX500 RSF650 , Brushless Motor Kit for Electic Go-Karts Kit, Electric Dirt Bike Motor Kit, Electric Motorcycles, Electric Scooter Motor, ATV, etc.NOTE:This product is not suitable for under 14 age.

Description

Introducing the Kunray 72V 5000W BLDC Brushless Upgrade Motor Kit - Model KR5V, designed to take your electric scooter, or DIY motorcycle conversion to the next level of performance and efficiency! Connect the motor phase wire and hall wire with YOUR CONTROLLER, Please ensure that your controller is wired correctly. Please refer to the following motor wiring functions. KR5V Electric DC Motor Upgrade V-Magnet Rotor 5 Pair Magnet Poles.It Can Improve The Performance of Brushless DC Motor. The Hall sensor install in the Back Cover It is Not Easy to Burn out Compared to Placing it InsideTheMotor. Please do not remove the screws. KR5V DC Motor, The Surface of The Motor Adopts Heat Dissipation Strip and Heat Dissipation Cover Design. Brushless Motors Allow for Rapid Cooling. There are screw holes at the bottom and front and rear of the 72v 5000w brushless motor. Choose the appropriate installation method according to your needs Why does my electric dc motor turn in the wrong direction and slowly? Check whether the phase wires and Hall wires are properly connected, disconnect the self-learning wire and connect again, let the motor self-study 10 to 20 seconds, then disconnect it, there is no need to connect it after motor rotates normally. Why did the motor suddenly stop spinning after it started? The controller and motor power are large, so the one-time output current of your battery is too large, which turns on the self-protection. Charge your battery for a few minutes and it will be ready for normal use Why does my Fardriver controller display a Hall error? The most likely cause is a program mismatch, please let us know to obtain the correct program. Alternatively, the hall wire may not be properly connected. or the Hall may already be damaged, in such case, please let us know for a solution. I received the package, but there seems to be a tiny scratch on the product The scratch may be caused by packaging or transportation, don't affect the performance and service life of the product. if it is too obvious, please tell the us, we will solve it in time Everything is connected, but the motor does not work? Please check your controller and battery specifications to ensure sufficient power and voltage, then verify that all wiring is correct. Finally, you can try the controller's self-learning function, as self-learning can solve most problems. 72V 5000W Brushless Motor 72V 3000W BLDC Motor 72V 3000W Motor Kit 72V 3000W Motor Kit 60V 2000W Motor Kit 48V 1600W Motor Kit 60V 2500W Motor Kit 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


Speed: 6800 rpm


Voltage: 72 volts


Horsepower: 5000 KW


Product Dimensions: 4.56"W x 5.35"H


Brand Name: Kunray


Model: KR5V


Manufacturer: Kunray


UPC: 768637301371


Included Components: 72V 5KW brushless dc motor


Part Number: 2023110611


Speed: 6800 rpm


Voltage: 72 volts


Horsepower: 5000 KW


Wattage: 5000 watts


Item Dimensions W x H: 4.56"W x 5.35"H


Item Weight: 12.7 pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 19

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

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Kunray kr5v
Size: 72V 5000W Style: Upgraded Brushless DC Motor
Good, withstands heat very well. The only thing I have is that the phase wires are small and packed together, causing them to heat up faster than other motors of this class. Not an issue though.
Reviewed in the United States on July 23, 2026 by Toren

  • A+++
Size: 72V 5000W Style: Upgraded Brushless DC Motor
So far so good fantastic motor beats the my1020 by Miles as far as torque and acceleration and Heat is not a problem get this over the silver one you will not be disappointed
Reviewed in the United States on February 12, 2026 by mark gardner

  • Stay Away
Size: 72V 5000W Style: Upgraded Brushless DC Motor
The Kunray motor was clearly used and poorly reassembled after it was broken or something, pretty ridiculous, avoid.
Reviewed in the United States on March 5, 2026 by me

  • Bolts right on to razor mx650
Size: 72V 5000W Style: Upgraded Brushless DC Motor
Want a crazy power house for the second stage of your bike? This is it. Loads of torque to carry that front end in the air and plenty of speed to keep you going. If your coming from an my1020 motor I’d suggest you have some handle bar grips you can keep a hold of lol.
Reviewed in the United States on January 21, 2025 by Spencer E.

  • Brand new
Size: 72V 5000W Style: Upgraded Brushless DC Motor
Great
Reviewed in the United States on November 4, 2025 by Cameron

  • Krv5
Size: 72V 5000W Style: Upgraded Brushless DC Motor
Legit motor , not sure what sprocket size it came with but just like kunray my1020 motor all sprockets fit on it , biggest tire it’ll fit is 2.75-10 unless you have swing arm for mx650
Reviewed in the United States on August 8, 2024 by Cesar

  • Torque is ⚡️⚡️
Size: 72V 5000W Style: Upgraded Brushless DC Motor
Solid.. Diagram helped a lot, was pretty simple.. still working on my bike but this is without tuning
Reviewed in the United States on January 8, 2026 by Donté

  • No threads in the holes for the mounting hardware.
Size: 72V 5000W Style: Upgraded Brushless DC Motor
Kunray used to be the best. Now they suck. QC is out the window. The holes for the mounting hardware are not threded. They must have missed that part during manufacturing. Also i bought a kit from them and they send me a 48V controller instead of the 72300 that was supposed to come with the kit. FU Kunray!!! ... show more
Reviewed in the United States on October 10, 2024 by Dustin

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