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LVBU 500W Powerful Ebike Kit

Only one cable connection, Converting a normal bike to electric

Smart Asssit system/ High Efficient Output Arrangement/ Bluetooth 5.0/ Induction cut off system/ Built in Gyroscope/ Road Slope degrees detection/ All Terrain Application/ Anti-theft tracking

  • Smart ebike kit

    Fast installation in 5 minutes

  • 24-29 inch

    Multiple wheel size

  • Bluetooth 5.0

    A new era of interactive experience

  • Speed ≤42km/h

    250/350W high speed permanent magnet motor

  • Micro Power

    Provides you the best cycling experience

  • 2 drive ways

    Throttle / Pedal assist

Product Specifications

    Model
    KH50S / KH52S
    Battery Capacity
    36V15Ah / 48V 12Ah
    Charging time
    6H
    Battery Type
    18650 power lithium ion battery
    Charger
    AC110V-AC220V DC 36V 2A / DC48V 2A 5502plug
    Assist Range
    150km
    Top Speed
    32km/h / 42km/h
    Wheel size
    24/26/27.5/28/29/700C
    Rated Power
    250W/300W/500W
    Motor Structure
    Gear drive
    Motor Efficiency
    >80%
    Max Torque
    30N.m / 35N.m / 70N.m
    Wireless Connection
    Bluetooth 5.0 (Allows the controller to connect to multiple devices at the same time)
    Product Dimensions
    Motor Weight
    2.6kg/2.55kg/3.25kg/3.45kg/2.7kg (250w Front/250w Rear/350w Front/350w Rear/250w Rear with torque sensor)
    Battery Weight
    3.15 kg /3.1 kg ( KH50S/ KH52S)
    Controller Weight
    0.5 kg
    Package
    71*71*22cm

Just 2 steps to convert a normal bike into a smart ebike

Only one connection cable is required to connect the battery and the motor.

INSTALLATION REQUIREMENTS

Fits Every Size Of Bike

KH50S electric bicycle kit fits all standard bikes. It has multiple sizes from 24" to 29" and 700C

High quality 18650 lithium battery

EV lithium-ion battery cell with internal resistance as low as 18mΩ, capacity of 2900mA, 3C high-rate discharge.The 18650 power lithium battery offers consistency, high energy density, and faster charge-discharge performance.Tried and tested over time, 80% capacity remains after 1000 cycles.

Using high-performance and high-safety BMS battery protection system

  • Over-discharge protection
  • Over current protection
  • Temperature protection
  • Over charge protection
  • Short circuit protection
  • Battery balance

Multifunction battery

ARM Cortex-M3 main chip

with 6-axis gyroscope motion processing chip
configure Bluetooth 5.0 Moduel
6 high-sensitivity speed-measuring magnets for precise speed measurement

250-500W high quality motor

Small size, light weight, high efficiency, smooth operation, long life Planetary gear and clutch: no resistance, easy to ride even when the battery is dead.

Rated power: 250W/350W/500W
Voltage: 36V/48V Structure: Gear Drive
Efficiency: >80% Max torque: 35/40/70(N.m)
Top speed: 32/35/42(km/h) Peak power: 500W/1000W

Speed up to 42km/h

Speed limitation is settable in the APP.
*The default Speed limitation is 25km/h, You can set the speed limit in the app

Anti-theft tracking, lost bike tracking.

You can report lost when your bike is stolen. After you report lost, once the thief tried to connect the wheel with the APP, the system will locate the mobile phone, disable the motor immediately and upload the information to the server.

5 smart assist modes

We have spent 5 years on developing and optimizing the assist system. The assist system is based onthe speed, acceleration, the road slope, and also the assist level that you set in the APP or on theBluetooth display, calculating out the power you need. lt will assist you automatically when you pedalAnd we wilkeep on optimizing the system and publish it from time to time. You willbe able to update the system via the APP.

Commute mode Leisure mode Manual mode Exercise mode Climbing mode

IP65 waterproof grade

IP65 waterproof grade makes you ride freely in the rain.

Certifications

We has applied for more than 30 kinds of national patents,
9pcs software copyrights, 7pcs trademarks,
and the number of patents and software copyrights are increasing every year.

Packing list

1. Motor wheel 2. Battery 3. thumb throttle 4. Charger 5. Accessories 6. Manual

Welcome to send us your enquiry, we will contact you as soon as possible
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192 REVIEWS - KH50S Ebike Conversion Kit
Keith Hammond
Australia , 2/6/2026
The packaging is fine, and quality of parts are excellent. I assembled it with my friend quickly and my bike became ready in half an hour. Using it like 2 weeks and it is totally changed my life. I'm also using bicycle trailer with it and I never feel a decrease of torque. I can and I will suggest it to my friends absolutely.
Model: KH50S 350W 15Ah Rear, KH50S 350W Rear Motor
Size: 27.5'', 27.5 inch rim with tyre
Color: Black, Black
Stef Van Rossum
Belgium , 2/5/2026
I had doubts about being able to add electric hub to my customized recumbent but it installed and runs perfectly. Thanks to the support from Rao, I am enjoying the pedal assist everything I ride.
Model: KH50S 350W 15Ah Front, 350W Motor, Front wheel ebike kit
Size: 20'', 20 inch rim with tyre
Color: Black, Black
Gilbert Newman
Denmark , 2/4/2026
Really great kit. Love it.
Model: KH50S 250W 15Ah Rear, 250W Motor, Rear wheel ebike kit
Size: 29'', 29 inch rim with tyre
Color: Black, Black
Connor Ridgeway
Austria , 1/30/2026
Changing over the wheel was very easy, and biking to work is so much nicer now! Can get about a week out of a charge.
Model: KH50S 250W 15Ah Front, 250W Motor, Front wheel ebike kit
Size: 700C(28''), 28 inch rim with tyre
Color: Black, Black
David Hugh Mepham
Denmark , 1/26/2026
My bike is really good for getting me up the hills now around where I live. thanks
Model: KH50S 250W 15Ah Rear, 250W Motor, Rear wheel ebike kit
Size: 29'', 29 inch rim with tyre
Color: Black, Black
Olavi M?kinen
United States of America , 1/25/2026
Amazing product and I am so happy to have my same trusty bike with just a little hill help now and then! The only down side is it had to come from China. They REALLY need a Seattle dealer. This town would devour this product!
Model: KH50S 250W 15Ah Front, 250W Motor, Front wheel ebike kit
Size: 29'', 29 inch rim with tyre
Color: Black, Black
Fernando Pérez Cos
Canada , 1/23/2026
I do feel smug going up steep hills which a few weeks ago I was the cyclist panting away whilst struggling to get up them. thanks lvbu
Model: KH50S 350W 15Ah Rear, KH50S 350W Rear Motor
Size: 29'', 29 inch rim with tyre
Color: Black, Black
Roger Symonds
Canada , 1/16/2026
I was looking for a relatively inexpensive way to convert my hybrid bike into an e-bike, and lvbu made it possible. The two months wait was a minor inconvenience, and the anticipation made me feel like being a little kid at Christmas all over again. I have been enjoying the e-bike experience for over 3 months now. The predominantly hilly terrain involving literally all of my rides is much more manageable now, and I am actually adding greater distance to many of my rides. Thank you LVBU for giving me increased incentive to ride longer into the cold weather months, and to look forward to starting earlier in the spring. Bravo!
Model: KH50S 250W 15Ah Front, 250W Motor, Front wheel ebike kit
Size: 29'', 29 inch rim with tyre
Color: Black, Black
Philip Ivan Borys
France , 1/9/2026
Rao was great: efficient and respectful. He provided an efficient solution and kept me posted on the progress.
Model: KH50S 250W 15Ah Rear, 250W Motor, Rear wheel ebike kit
Size: 700C(28''), 28 inch rim with tyre
Color: Black, Black
Tony Leggett
Australia , 1/8/2026
Professional and kind support!
Model: KH52S 500W 12Ah Rear, KH52S 500W Rear Motor
Size: 29'', 29 inch rim with tyre
Color: Black, Black
Tanja Neuvonen
Spain , 1/6/2026
Really a great product, It was a breeze to do this conversion. It has good power to cruise and handle some decent hill climbs. I would recommend this product to anyone, who wants to switch to ebike.
Model: KH50S 250W 15Ah Rear, 250W Motor, Rear wheel ebike kit
Size: 29'', 29 inch rim with tyre
Color: Black, Black
Ram Reddy
, 12/31/2025
My customer service representative, Rao, was very responsive and helpful. He quickly understood my issue and took care of it efficiently.
Model: KH50S 350W 15Ah Rear, KH50S 350W Rear Motor
Size: 27.5'', 27.5 inch rim with tyre
Color: Black, Black
Mike Dalrymple
United States of America , 12/31/2025
The kit is generally great as a product!
Model: KH50S 350W 15Ah Front, 350W Motor, Front wheel ebike kit
Size: 29'', 29 inch rim with tyre
Color: Black, Black
andrew french
United Kingdom , 12/29/2025
Happy with this product. Pretty easy installation. I am using an older Sear's style steel stopover bike that I had converted to a single speed. It has made the bike fun again particularly if it is a windy day.
Model: KH50S 250W 15Ah Front, 250W Motor, Front wheel ebike kit
Size: 29'', 29 inch rim with tyre
Color: Black, Black
Rick Ineman
United States of America , 12/26/2025
Before my bike was tedious and slow. After converting with the kit i can ride fast and effortlessly. I think this is a wonderful product. Highly recommend. The after sales service was also fantastic. When i was installing the kit i encounter problems and when i contacted the company the team knew exactly what was wrong and they sent me some addional parts. Since then everything works well.
Model: KH50S 350W 15Ah Rear, KH50S 350W Rear Motor
Size: 29'', 29 inch rim with tyre
Color: Black, Black
Craig Harwood
Switzerland , 12/25/2025
Finally received the kit earlier this month and installed it on my 2009 Fuji MTB 29 inch tires in about 2 hours. I took my time with the installation because I didn't want to make mistakes. Instructions online were clear and everything was very well designed and made. Took it on a few rides and it's been a game changer for longer rides beyond 2 hours. I live in a town full of hills so the electric motor certainly made all the uphill climbs EASY. Very happy with the kit so far!!!
Model: KH50S 350W 15Ah Front, 350W Motor, Front wheel ebike kit
Size: 27.5'', 27.5 inch rim with tyre
Color: Black, Black
karen jackson
Canada , 12/22/2025
Finally the kit arrived after about 50 days! Sadly delivery times are appalling and they must sort this if they are to succeed. The product however seems to be very good quality, nicely boxed and fairly easy to install. I've yet to really try the bike on the road but initial impressions are very good. More than enough power to zip along. Had it not been for the terrible wait 5 stars would have been in order. I do hope lvbu can sort this as its a great idea and product.
Model: KH50S 350W 15Ah Rear, KH50S 350W Rear Motor
Size: 700C(28''), 28 inch rim with tyre
Color: Black, Black
Ben Woodhams
Netherlands , 12/19/2025
We converted our Bakfiets short cargo bike with a lvbu conversion kit and it works very well. The power is more than sufficient. We initially didn't calibrate the gyroscope angle properly so nothing happened when stop, but fixed that quickly. Would recommend this to anyone looking to convert their two wheeled cargo bike
Model: KH50S 350W 15Ah Front, 350W Motor, Front wheel ebike kit
Size: 26'', 26 inch rim with tyre
Color: Black, Black
Scott Manninen
Australia , 12/18/2025
The kit itself is great and is as good as advertised, if not better. All the parts needed were included and it was fairly easy to assemble. Riding it has quite a bit of power, quickly gets up to speed, and can handle some decent hills. You basically go nearly full speed up hills that you'd be grinding away at a snail's pace. The only negative I can give about the experience is the long wait. They made it clear it would be about one month but it pushed into 2 for me. I realize this is a small company but if you want to get to the next level those turnaround times need to decrease considerably. Otherwise, great product, very satisfied!
Model: KH50S 350W 15Ah Front, 350W Motor, Front wheel ebike kit
Size: 27.5'', 27.5 inch rim with tyre
Color: Black, Black
Eric Whitehead
Korea , 12/17/2025
With baited anticipation I anxiously awaited the arrival of the product and when it arrived I was ready to install this gamechanger to my Specialized crossover bike. It was a simple install and the ride was very comfortable with the new power giving me back the freedom I desired. It has been a struggle to ride without power assist since my dual knee surgeries and this should ease the recovery of my upcoming hip surgery. Upon reading other reviews I found out that the factory can actually provide shorter cables which had been my one complaint with the product since all were quite long otherwise I a m very happy with lvbu, thank you!
Model: KH50S 250W 15Ah Front, 250W Motor, Front wheel ebike kit
Size: 700C(28''), 28 inch rim with tyre
Color: Black, Black
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