Lvbu KB Series Ebike Kit

Front bag
1 Cable Connection · Easy to Install

Assist range from 45km to 65km / Wired thumb throttle /
Induction cut off system /All Terrain Application

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.

Fit Every Size of Bike

It can fit Mountain bikes, Road bikes, Folding bikes,
City bikes, Trikes and etc. It has rim sizes from 16" to 29" and 700C.

High quality 18650 lithium battery

Low internal resistance, high discharge rate, Grade-A 2600mAh cells, combined with an integrated BMS for
stable and reliable power output. Tried and tested over time, retaining 80% of its capacity after 1,000 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

Battery Pack Details

Upgrade the hard-shell storage bag design. Detailed and exquisite, with convenient usage.

250W high speed brushless permanent magnet motor

Small size, light weight, high efficiency, stable operation, long lifetime
Planetary gear and clutch:It's easy to ride even when the battery is dead.

Power: 250W/350W Efficiency: >80%

Structure: Gear Drive Max torque: 30-35

Weight:2.56/2.98kg Color: Black/Silver

Speed up to 32km/h
Enjoy effortless rides wherever you go

Packing list

1.Motor wheel 2.Battery and Controller 3.Thumb throttle 4.Wireless cadence 5. Charger 6. Manual 7.Accessories

Roger N23

United Kingdom , 10/15/2026

Quick delivery time. Responsive customer service and appears to be quality kit. It’s also easy to instal.

Model: KB30S 250W 7.8AH Front, for KB30S
Size: 406-20", 20"
Color: Black, black

Frank

Germany , 10/14/2026

I love the bike kit. Absolutly easy to install. Riding your bike to work and arriving at your destination sweaty is history. … and it is good for sustainability!

Model: KB30S 250W 7.8AH Front for Brompton, for brompton
Size: 16", 16 inch rim with tyre
Color: Black, black

lynda keward

United Kingdom , 9/23/2026

Husband fitted it. Couple of problems but all Ok in the end. I use my bike to do supermarket shop and there was a hill on the return journey that I couldn’t manage so had to get off and push - not easy with full panniers. Can now continue riding with ease

Model: KB30S 250W 7.8AH Front for Brompton, for brompton
Size: 700C (28"), 28 inch rim with tyre
Color: Black, black

Heidi

United Kingdom , 9/21/2026

Easy to install. If you follow directions. Supplies plenty of extra power. Distance battery lasts, is as advertised. I would recommend.

Model: KB30S 250W 7.8AH Front for Brompton, for brompton
Size: 26", 26 inch rim with tyre
Color: Black, black

Elizabeth Chalmers

France , 9/20/2026

I am an avid rider but riding much more now. According to my fitness watch, I'm still getting a good workout. The assist feels very smooth and natural. Most of my ride is on commute mode, and my husband can't keep up on his expensive e-bike.

Model: KB30S 250W 7.8AH Front for Brompton, for brompton
Size: 27.5", 27.5 inch rim with tyre
Color: Black, black

Mandy

France , 9/18/2026

Personally I love this kit, easy to install and has so fair worked really well! Have fitted this to my commute bike and it’s lovely, super easy to cycle up hills and the power it exudes is great. The main benefit is my bike doesn’t weigh 30kg like many e-bikes do. I love it. Getting one for my husband next.

Model: KB30S 250W 7.8AH Front for Brompton, for brompton
Size: 406-20", 20"
Color: Black, black

Ulysses Espinosa

United States of America , 9/16/2026

Light battery pack, easy to assembly and I can put it on any of my bikes! I'm usually moving faster than traffic here in San Francisco!

Model: KB30S 250W 7.8AH Front for Brompton, for brompton
Size: 26", 26 inch rim with tyre
Color: Black, black

Hans

Germany , 9/2/2026

Brilliant product

Model: KB20S 250W 5.2AH Front, for KB20S
Size: 27.5", 27.5 inch rim with tyre
Color: Black, black

J Kevin

United States of America , 9/2/2026

Installation was straight forward. Great step by step instructions were given. All parts fit my bike well. The motor has worked well boosting the bike like a strong tailwind. The battery has given the mileage expected. Overall we are very pleased with our bike conversion.

Model: KB30S 250W 7.8AH Front, for KB30S
Size: 26", 26 inch rim with tyre
Color: Black, black