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Product Specifications

    Model
    RN20A / RN30A
    Battery capacity
    36V 6Ah / 36V 9Ah
    Cell quantity
    20 cells / 30 cells
    Charging time
    3.0H / 4.0H
    Charger
    AC110V - AC220V,DC42V 2A
    Assist Range
    25km / 38km

    *The assist range is under conditions: 60kg weight rider, ouside temperature 25℃,no wind, 50% assist level under manual mode, tires with enough air pressure, riding on flat level road.

    Top Speed
    32km/h
    Wheel size
    16" / 20" / 24" / 26" / 27.5" / 700c/ 29"
    Rated Power
    250W
    Motor Efficiency
    >80%
    Max Torque
    >4000mN.m
    Wireless Connection
    Bluetooth 5.0 (Allows the controller to connect to multiple devices at the same time)
    Charge Socket
    Type C
    Net weight
    5.5kg
    Package
    380*350*160mm

Lvbu RN Series Friction EBike Kit

Visual interactive experience

Digital screen power display /Type-C dual charging port Side power management switch / Pedal assist range of 60 km 5.0 Bluetooth connectivity /intelligent micro-power system

  • 5 minutes

    Quick installation

  • 250W

    High-speed brushless motor

  • 5 modes

    Smart assistance modes

  • 32km/hour

    Maximum speed

  • Bluetooth 5.0

    A new era of interactive experience

  • Micro Power

    Provides you the best cycling experience

Just 2 Steps to Transform Your Bike into an Ebike

The Lvbu friction ebike kit series, featuring a removable battery, requires only one cable, with a simple design and quick installation

  • Step 1:Install the motor
  • Step 2:Install the battery
    (the controller is inside the battery holder)

Installation Requirements

  • Step 1. This is the L-shaped mounting bracket. The plate's holed surface is flat and will be installed beneath the bicycle's rear fork tube.
  • Step 2. Turn the bicycle upside down and verify that the underside of the rear fork tube is a flat, unobstructed surface. The pre-drilled face of the L-bracket must sit flush against this lower surface.
  • Step 3. The upper surface of the rear fork tube must be flat and free of obstructions. Additionally, a minimum 100mm clearance must be maintained between the bottom bracket shell and tire to ensure adequate installation space.
  • Step 4. This is the ajustment Plate. The plate has a flat surface and will be installed on top of the bicycle's rear fork tube.
  • Step 5. Install the adjustment plate at the 70mm position between the rear fork tubes, then secure both the adjustment plate and L-bracket with mounting bolts.
  • Step 6. The L-bracket and adjustment plate are properly seated against the fork tube surfaces with all bolts securely tightened. Final step: Launch the app to verify successful installation.

INSTALLATION REQUIREMENTS

Compatible with Various Bike Models

The Lvbu friction ebike kit series can be installed on mountain bikesroad bikes, commuter bikes, touring bikes, folding bikes, and more.

250W Brushless DC Motor

Small size, light weight, high efficiency,
smooth operation, long lifePlanetary gear and clutch

Rated power:  250W
Voltage:  36V
Structure:  Gear Drive
Efficiency:  >80%
Max torque:  >4000 mN.m

Product Advantages

High quality 18650 lithium battery

EV lithium-jon battery cell with internal resistance as low as 18m0, 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

Multi-function Design

Easy to operate and use

  • LED DISPLAY SCREEN

    Battery level clearly visible

  • POWER SWITCH

    Conserve battery life

  • TYPE-C DUAL CHARGING

    Emergency power bank supports phone charging

  • BATTERY LOCK

    Fixed battery, safer for cycling

ARM Cortex-M3 main chip

With 6-axis gyroscope motion processing chipConfigure Bluetooth Low Energy 5.0 10 pieces of high-sensitivity speed measuring magnets for precise speed measurement

5.0 Intelligent bluetooth connection

Bluetooth 5.0 module allows you to connect multiple devices at the same time

Micro power system

10 years of research and development has gone into creating a versatile and cost-effecive product for cyclists. The micropower system offers intelligent assistance with induction brakes that have a response time of 10ms. The system can sense the speed, acceleration and road slope, it will help you automatically when you pedal.

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

Check the realtime cycling data
and set the assist mode on the APP

And also you can check the speed,temperature, power, mileage, etc.

  • Real-time data
  • Riding speed
  • Temp
  • Battery
  • Mileage
  • Lock
  • Assist mode
  • Device

Speed up to 32km/h
Speed limitation is settable in the APP

The default maximum speed is 25km/h,you can set the speed limitation up to 32km/h in the APP.

Anti-theft Tracking Function

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.

PACKING LIST

Welcome to send us your enquiry, we will contact you as soon as possible
The message will be saved after closing the window
 
 
48 REVIEWS - RN Series Friction Ebike Kit
Keith Hammond
Indonesia , 1/14/2026
Absolutely PHENOMENAL company. Love the product, love the team, and love how EASY it all is. If you haven’t switched to an e-bike yet, you need to do so TODAY!
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Ryan Nafarrete
Malaysia , 1/9/2026
Miya was prompt, professional and polite!
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Nicola
Indonesia , 1/8/2026
Very helpful and prompt response to my enquiry. Thank you.
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
Derek Smith
United States of America , 1/5/2026
The product works great! It's everything as advertised and I love it!! It's not quite as easy to install as they claim, I'm moderately handy and managed to install it but it's not as easy as 1, 2, 3.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Francesco Draisci
United States of America , 1/4/2026
Easier to install than I expected, and it works great. This is a really great lower-cost alternative to an e-bike.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Christopher Holden
Netherlands , 12/29/2025
Amazing!!! They should updated more accessories to give more support to this amazing technology but we will see in future!!
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Michael Wendlinger
United States of America , 12/23/2025
Brilliant customer service, thank you Miya. Prompt replies to emails & fast shipping. thank you??
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Jo?o Paulo Pedrosa
Thailand , 12/19/2025
Very satisfied, the sistem is very effective, easy to instal and works perfectly. Good quality materials, high quality for a fair low price.
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
joe boyce
Malaysia , 12/5/2025
Great service, really pleased with the outcome. Would highly recommend
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
JOSEPH NOON
Singapore , 12/4/2025
Makes the commute to work that wee bit easier. If your looking to convert a bike to electric, check this guy out first. You won't be disappointed.
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
Bryson Gallegos
Thailand , 12/3/2025
If you are wanting a cheap cracking convertion then LVBU is your man. You will not be disappointed ????????
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Alex Skingle
Kampuchea (Cambodia ) , 11/28/2025
It will rejuvenate you and motivative you to use your bike again! I give 5 stars on this product
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
GEORGE SANCHEZ
Vietnam , 11/27/2025
Simple instructions and a very adaptable unit for a very competitive price
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Serdar Yeralan
Malaysia , 11/26/2025
Customer services were excellent at sorting out my problem. They made me feel like a valued customer who was important to them. Highly recommend them
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
Riccardo De Luca
Italy , 11/21/2025
It was the ease of installation of the kit that was appealing. Ease of taking the battery on and off is also a benefit. I have now signed up for the upgraded battery which will extend the bikes range, though I have never had a problem with that so far. It just works the way I want it to.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Matthew Stanley
France , 11/18/2025
Great customer service. Made a complicated issue much easier
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
George R Massingham
Thailand , 11/17/2025
Very helpful customer assistance staff, who directed me to the right place. Thank you!
Model: Charger for KX series,
Size: Australian standard, for lvbu ebike kits
Color: Black, Black
Samuel Peter Falch
Finland , 11/14/2025
Miya was very responsive and very helpful throughout the process.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Chris Ortiz
Thailand , 11/12/2025
I had a great experience with the customer service (RAO). The response time was impressively fast, and the support team was very friendly and helpful. I appreciate their efficiency and excellent communication. Highly recommended!
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Shane Stevens
Italy , 11/4/2025
A bit of a faff to fit the friction wheel to the bike, but I did manage it okay. It took a few hours. In use, this kit is amazing! It transforms cycling. I highly recommend it. On reflection I'd have fitted a rear carrier and bag, and put the battery inside the bag, it would have saved a lot of the diy drilling and fixing stress. Overall, its worth every penny and its a lot cheaper than the big brand names.
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
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