How fast will it go mph

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 .

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

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.

?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.

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.

i bought a lithium ion battery with the xt60 connectors but this motor kit has rings. what do i do to change it?

Take out the fuse splice the wire to the type you want and Walla

Electric Brushless Dc Motor Complete Kit 48v 2000w 4300rpm High

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Description

⚡ Upgrade your ride, dominate every terrain — DIY electric power redefined!

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.

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.

Specifications

ASIN	B07G2LZHD8
Best Sellers Rank	#50,015 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #1 in Scooter Motors
Brand	Kunray
Brand Name	Kunray
Customer Reviews	4.1 out of 5 stars 221 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

Reviews

A**R

29.01.2019

T**.

5.10.2025

C**!

24.02.2025

R**Y

2.06.2020

T**E

15.01.2021

R**B

2.12.2020

D**E

7.05.2024

A**.

9.06.2022

A**D

31.08.2024

M**S

25.03.2026

G**Y

4.08.2021

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