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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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67 REVIEWS - RN Series Friction Ebike Kit
Jerry Wiley
Netherlands , 4/28/2026
just received some items I ordered ahead of my kit, was very surprised at how quick my orders came in, very well packaged, got me really anxious to get my main kit, can't wait.
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
Tony Simister
United Kingdom , 4/23/2026
I ordered the friction wheel kit, with a claimed to 38km range. It was quick and easy to fit, and on the first hilly ride I achieved 30 km, with some capacity left. I'm sure I could get well over 38km on flat ground. Next challenge is a 10 day Welsh tour. Very confident.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Marek Siebert
Australia , 4/13/2026
Great value entry into pedal assist cycling. Had to get our local bike shop to complete the fit, but that is due to my lack of bike maintenance experience.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
paul clarke
Ireland , 4/9/2026
I would give my review 5 stars
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
Sarah
United States of America , 4/8/2026
Very helpful quick to respond to any questions
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Kevin Henson
Kampuchea (Cambodia ) , 3/31/2026
I converted a fixed gear bicycle with this kit and it is a dream!! I highly recommend this product and want everyone to know it is possible to have a fixed gear e bike! Woo hoo!
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Reinhard Marx
Indonesia , 3/28/2026
The best customer support. Always friendly and ready to help.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Phil Shotton
Netherlands , 3/19/2026
I am very happy with the support I received. I had written tech support followed by a video call and the issue was resolved. Staff were positive and helpful throughout.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Tijmen Van de Casteele
Netherlands , 3/6/2026
The kit works properly and is easy to install. The only negative thing was a waiting time, as there were several delays.
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
Silvano Madrid
Vietnam , 3/4/2026
This e-bike kit is a game changer! Easy to install, powerful, and with great battery life. It makes my rides faster and more fun. Highly recommended!
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Jerry Welc
Malaysia , 3/2/2026
Highly recommend it to anyone interested in small/medium lenght commutes with the support of an ebike. The only thing I would change is place of manufacture (Made in China) - so it can arrive fast lol
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
David Queen
Australia , 2/28/2026
I’ve been pleased with the communication I’ve received from the folks at lvbu. My kit arrived within the time frame specified when I ordered. Installation was easy and, so far, I’m happy with the performance.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Gareth
Austria , 2/7/2026
Great service and responsiveness with questions about the installation.
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
G pa Westlie
Malaysia , 2/5/2026
Now we are already using the second lvbu converted bike and we are very happy. The system normally works very well, and if there are problems they really have a great customer support service.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Charmian
Philippines , 1/30/2026
The kit installed in a couple hours from opening the box to riding down the street. Even at the lowest assist level, the electric motor provides plenty of power. Simple interface is very easy to use.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Rein Van der Gouw
Vietnam , 1/26/2026
Great Kit- excellent instructions and support for installation. Required some modifications- but in the end it works - and works well.
Model: RF30A 250W 9Ah, RF30A
Size: Standard, Standard
Color: Black, Standard
Karl Greene
Kampuchea (Cambodia ) , 1/25/2026
I received exactly what i was hoping for! Everything was neatly packed with sustainable materials! very clear and straight forward! It took me about 3 hours unpacking / assembling and i could ride my bike. Very happy with my "new" bike so far after 250K. Hopefully many more to come with my battery!
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
Rick Malaryk
Philippines , 1/24/2026
Great communication, service, and follow through. I’m thrilled with the idea that I can convert any of my bikes to an E-bike at less than half the weight of a regular E-bike.
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
Roger Bush
Netherlands , 1/19/2026
Spot on and delivered prompily
Model: RN20A 250W 6Ah, RN20A
Size: Standard, Standard
Color: Black, Standard
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
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