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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
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27 REVIEWS - RN Series Friction Ebike Kit
Layton Walker
Vietnam , 10/27/2025
Pretty easy to install, more power than I expected.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
J Trevelyan
Malaysia , 10/24/2025
Im excited with my bike conversion! It feels like its renewed. Easy installation & good quality of parts.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Jonathan B
Mexico , 10/22/2025
Easy to setup and use. Great service
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
Jason Slick
Poland , 10/17/2025
Great products and great support. The staff worked so hard to get my unusual set of problems fixed! I so appreciate it. Finally I am back on my bike!
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Gladys Noordhoek
Sweden , 10/11/2025
Very helpful and they understanding my questions
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
Bryce Vanderkolk
Kampuchea (Cambodia ) , 10/10/2025
I'm happy to report a great experience with LVBU.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Ottotek
Kazakstan , 9/30/2025
The salesperson was knowledgeable regarding the products and was very helpful as I placed my order.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Chuck Howard
Kampuchea (Cambodia ) , 9/24/2025
Good service, installation, and my modified electrified bike is a dream to ride. The motor is peppy. I thought the throttle would be a bother but since I use the motor judiciously, it is very simple and effective to use.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Kian Tan,Cambodia
Kampuchea (Cambodia ) , 9/16/2025
compact and easy to install
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
Jeremy Cook
United States of America , 9/16/2025
The shipment arrived on time and the status was consistently updated throughout. The parcel was securely and neatly packed. The item received functions exactly as expected. Overall, it feels very safe and reliable to transact via the Alibaba platform. Highly satisfied with the experience.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Craig J
Vietnam , 9/10/2025
Product great, better than I expected. Tech support is helpful
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
Gary W. Mears
Malaysia , 9/9/2025
Excellent products. Fast friendly service. A Keeper!
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Joseph Lewis
Hungary , 9/4/2025
Super easy to place an order, shipped in a hurry….nice!
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Oscar Wilson
Sweden , 9/2/2025
Very helpful answering questions
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Paul Anderson
Spain , 9/1/2025
The order shipped the next business day and l had the new cables on the bike around one month after I placed the order..
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Marci Nadler
Poland , 8/15/2025
Highly recommend this company. They got back to me quickly on questions and shipped everything out fast. Great to do business with.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Vince Brown
Russia , 8/6/2025
Outstanding products and customer support to match. Best purchase I've made.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Joy Tajes
Thailand , 7/21/2025
Easy to order, prompt service, good communication, excellent product. What more can I say?
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Erwin Vervloet
Indonesia , 5/22/2025
This was my first time using a friction-drive e-bike kit, and I was pleasantly surprised. It's compact, doesn’t make the bike bulky, and is surprisingly quiet. The assist feels intuitive and doesn’t take over the ride. For those who want an affordable way to electrify an existing bike without too much hassle, this is a great choice.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
james w. LEE
Indonesia , 5/15/2025
Great quality. Good price.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
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