The best electric bike conversion kit in UK 2021

The best electric bike conversion kit 2021 in UK

The current rechargeable batteries are more powerful and reliable, and motor technology continues to improve. As a result, the era of e-bikes is here with us and bringing a lot of excitement with it. There are a handful of benefits associated with e-bikes, and it includes effortless riding while also enjoying the scenery. E-Bikes are great for commuting and adventures during your free time. You get around faster, and more efficiently.

One of the easiest ways of getting an e-bike is buying a full unit, which is a more expensive option. The design of the purpose-built bicycles is around the battery and the motor. The research and development, as well as marketing all push up the price. But if your goal is to make savings, you can always get the best electric bike conversion kit on-the-market. But which kit is the best and most reliable?

Top 10 best electric bike conversion kit in UK 2021

Below are 10 of the best electric bike conversion kits to go for on Amazon.

1. Bafang BBS02B mid drive conversion kit

If you already have a conventional mountain bike, this is the ideal kit to convert it into a powerful eMTB! The BBS02B Bafang comes with all the basic mounting accessories, including a 48V 750W motor, LCD with Bluetooth connectivity, brake levers that can be upgraded to hydraulic ones, thumb throttle, pair of cranks, speed sensor, just to mention a few.

The mid-drive kit will be a nice fit for bikes with a 68-73mm bracket and its positioning on the bike helps to bring an optimal balance to the overall weight of the bike.

The 750W included in the package delivers strong power output with a torque powerful enough to get you to a top speed of 24mph. Its central balance gives you more stability and better control while riding, and you get to choose between a thumb throttle or 9 pedal-assist levels to get the motor-assistance.

Installing the kit doesn’t take too much expertise; you can do it all by yourself if you have the basic knowledge of bikes. A few tools are all you need to remove the crankset and center shaft before mounting the motor. Furthermore, there are many YouTube videos to guide you through the process.

The components are all solid and involve a relatively easy installation process if you have the basic tools necessary. Overall, this is one of the most reliable conversion kits you can get out there.

It boasts a nice rating online with positive reviews, and you won’t have a problem mounting it on your own. Aside from the lack of a battery, the only other grievance on this kit is the relatively higher cost. Fortunately, you’ll get your money’s worth once you start using the new battery-powered bike!

The best electric bike conversion kit in UK 2021
The best electric bike conversion kit in UK 2021

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2. ReaseJoy Front Wheel Electric Bicycle Motor Conversion Kit

This ReaseJoy 26″ front wheel kit comes with a 36V 500w brushless gearless hub motor that can top speeds of 33KPH. It also comes with a dual mode controller which can allow the motor to continue working if the hall components inside the motor break down. The front wheel kit can easily fit on to a variety of different bicycles making it a more versatile option than other kits on the market.

This product can also come as rear wheel motor up to 1000w. It main components are; motor controller, electric brakes that shut off the motor, thumb throttle with 3 LED battery powered indicators, drive system without chains or gears so there is no friction and a strong aluminium rim. However it must be noted that there is no battery or lcd screen included. It also lacks the option to put hydraulic brakes and doesn’t have a PAS system which could prove useful, but for the low price its a pretty good bargain still.

So, as there was not battery included with this kit we decided to use a 13Ah battery to pair with it. Installing the kit went smoothly although it must be noted that you may have to change some things around depending on the bike you have picked to covert, as for example we had to replace our front calliper and buy a torque arms to make this bike safe. Once installed, the e-bike ran very well and quietly assisted nicely over hills and inclines. It overall has a quality feel and gives enough help when riding combined with your own efforts.

There are some huge pros to this front wheel conversion kit such as; its price, versatility, quality and motor however there really is some extra expenses and issues to consider such as; lack of option to install hydraulic brakes if needed, a battery and pedal assistance system. This kit may also struggle to handle more complicated terrains and inclines due to it being a front wheel.

So to conclude, this is a good product but you may have to consider that once you add up the extras components it could be worth investing in a higher quality one with a more powerful motor.

The best electric bike conversion kit in UK 2021
The best electric bike conversion kit in UK 2021

Buy Now on Amazon

3. TheeBikeMotor Electric Bike Conversion Kit

For those that require additional power, TheeBikeMotor brand have the answer with their 1,500 watt conversion kit. It’s a premium option and is available in front or rear wheel sizes that range from 20 to 29 inches.

In order to further improve the performance of this conversion kit, it uses the latest sine-wave controller. Compared to standard controllers, it’s far more stable, efficient and also supports additional functions.

Other features of the TheeBikeMotor Conversion Kit include: Available as a front or rear wheel setup; 48V 1,500W motor; Maximum speed of 60 KM/H; Pedal assistance system (PAS); Aluminium rim; LCD display.

Overall, it’s one of the most powerful electric bike conversion kits on the market that’s perfect for those wanting extra speed. It’s built to a high standard and comes with everything you need for installation in the box.

The best electric bike conversion kit in UK 2021
The best electric bike conversion kit in UK 2021

Buy Now on Amazon

4. ELECYCLES Front Wheel Electric Bike Conversion Kit

This electric bike conversion kits model includes its battery with in its price. This kit is powered via its 250 watt motor and comes with either a 36V 5.2Ah battery or a 7.0 Ah battery depending on how much range you need.

It also comes with an intelligent controller for the motor and a mobile app to adjust its speed. This kit has a throttle to assist with speed and two waterproof cables for installation. Its motor speed can also reach 32 km per hour due to its design.

A very affordable UK legal electric conversion kit for bike models, has a great price considering its batteries are included and an easy installation thanks to its limited cables and front wheel design, downfalls of this product are its lack of power and accessories such as headlights and tools to help the installation process, front wheel kits also prove less traction than rear ones.

The best electric bike conversion kit in UK 2021
The best electric bike conversion kit in UK 2021

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5. Bafang BBS01B 36V 250W Bike Conversion

The Bafang BBS10B is one of the best e-bike conversion kits and probably the most affordable of them all. If you have a low budget and still need to have the best kit, well there is no further you would want to look. Bafang is a superb brand that creates the best conversion kits and probably affordable ones as well. This model is indeed among the most popular ones since it has a low price and also very easy to set up.

The kit includes a 250W motor, brake levers, LCD Display, water-proof cables, chain wheel, pair of cranks, thumb throttle, Speed sensor and magnets, headlight, and power-extension cable. Although, this kit does not have a battery along with this so you may have to spend an extra amount to get one for your eBike. It runs on the 36V powerful motor that gives the top speed to be about 15 mph. The installation is pretty easy to carry out with the help of the manual.

It hardly makes any noise, runs perfectly well for your daily commute. If you wish to take it up the hill, the motor is very reliable and does support the power it will need. Also, the pedals are very smooth and progressive to carry out.

The best electric bike conversion kit in UK 2021
The best electric bike conversion kit in UK 2021

Buy Now on Amazon

6. Petrol scooter Electric Bicycle Front Wheel Conversion Kit

Petrol scooter front-wheel conversion kit is the best electric bike conversion kit that offers more than its pay grade. It features a mighty 1000W brushless motor, which can take you from 0 to 35 mph in just under 9 seconds.

The Petrolscooter conversion kit features a 26-inch wheel with a tire.

Apart from that, the Petrolscooter e-bike conversion kit comes with everything you need to electrify your bike, but you have to buy a battery before going for a spin on your new DIY Electric bike. Other than that, it’s a good bargain for money when you can convert your existing bike into an electric bike for just a fraction of money when some brands are charging their customers thousands of dollars for the same thing.

The best electric bike conversion kit in UK 2021
The best electric bike conversion kit in UK 2021

Buy Now on Amazon

7. Bafang BBSHD Mid Drive Electric Bike Conversion Kit

Some e-bike conversion kits limit you to a specific voltage, but this electric bicycle kit is designed for use with 48 and 52-volt batteries. However, the company recommends using a 52-volt battery for the best results.

The package includes a Bafang BBSHD 48-volt 1,000-watt motor along with brake levers. However, you can swap out the brake levers for hydraulic and mechanical sensors.

Multiple size options are available, including a 42T with a 68-millimeter bottom bracket, with or without a 17.5Ah downtube battery, up to a 46T sprocket with a 120-millimeter bottom bracket with a choice between a 17.5Ah downtube or touring rack battery or a 52-volt 14Ah downtube battery.

This e-bike conversion kit works with many different types of bikes, including mountain, road, commuter, and fat tire bikes. The kit comes with an optional Bluetooth LCD display, a pair of cranks, speed sensor and magnets, a headlight for increased visibility and more.

The best electric bike conversion kit in UK 2021
The best electric bike conversion kit in UK 2021

Buy Now on Amazon

8. Voilamart 26″ Front Wheel Electric Bicycle Conversion

The Voilamart 26” budget Electric Bicycle Conversion Kit is one of the best electric bike conversion kits on this review. This option is also the best rear wheel kit. This is among of the most affordable rear wheel electric bike conversion kit for any type of bike. If ever you need to give the drive unit of your bike more power, all you need do is to strap up with anyof these Voilamart 26″ Wheel electric bike conversion kits and get going.

Luckily for you, if the old tire is compatible, you might need to retain this and use it for the conversion kits. For the do-it-yourselfers out there, they will be truly amazed that these bike kits are easy to install. The total installation time of the bike kit is less than an hour. In terms of the drive unit of this bike kit, we are talking about a powerful brushless motor which comes with a rating of about 1000W and works at speed limits of 750W. Produces a lot of power.

Due to the intelligent motor controller of the bike kit, you can simply switch between power modes with a simple press of a blue button. Therefore, you could easily move uphill with your bike without necessarily making those tiring sounds thanks to the power pack of this bike kit. This comes in an all-in-one size. This looks like the Swytch bike.

This is among the bike conversion kits that has an LCD screen to display the PAS settings and the battery level. This bike kit PAS is technically a 5 level PAS. With this function of the bike kit, you would be exercising and cycling simultaneously. Now, this is unbeatable!!!

We also love the battery level display that is located on the throttling system. This is used to tell you about the rate of consumption of the battery. Somemore feature of this bike kit model is that the crank sensory system is used to improve the way that the PAS works. The dual brake levers provide ultimate stop through safely cutting the power that is supplied to the motor.

We just love the awesomeness of this bike kit due to most of its features. Users will find this bike kit highly functional and will be impressed by its durable performance.

The best electric bike conversion kit in UK 2021
The best electric bike conversion kit in UK 2021

Buy Now on Amazon

9. Schuck 48V 500W Front Wheel Electric Bicycle Conversion

With this product, you can easily convert ordinary bicycles into electric bicycles. That’s hundreds of dollars cheaper than buying a new electric bike. It only takes 1-2 hours for one person to complete the modification. You get a controller bag for free and of course, the installation instructions come along with the packaging.

Featuring a 48V500W brushless gear motor with a maximum speed of 32 km / h, the maximum load capacity of electric bicycles is 150-250 kg while also featuring double-walled alloy wheels with reinforced stainless steel spokes for extra tension and the front fork has an opening of 100 mm.

The kit’s LCD7U screen display it offers battery percentage, speed, total and single trip distance, wattage, PAS levels, and potential error codes for easier troubleshooting.

The best electric bike conversion kit in UK 2021
The best electric bike conversion kit in UK 2021

Buy Now on Amazon

10. L-faster 24V36V250W Electric Conversion Kit

If you are looking for the cheapest electric bike conversion kit, this is yet another one I’d recommend you look into. With including most of the components you’ll need for an e-bike conversion kit, the 24V36V250W will be worth the hassle.

Optimize using easy and functional controls
Considering this is a budget electric conversion kit, it’s important that the controls be as friendly as possible. This being the case, the conversion kit comes with either a twist throttle design or a thumb throttle design and despite the variant you prefer, it should be easy enough to engage the motor.

It’s easy to set up and install
Included in this kit is a customized sprocket and components and a mounting plate and bolts that make the installation process easy. What’s even more interesting is that the kit is compatible with most bikes and there is also an installation video to set it up, which makes DIY installation easy.

Keep track of the battery capacity with the indicator
Other than the twist throttle functioning to start up the motor, it has a battery indicator that lets you know the battery capacity.

Yet another feature you’ll find handy is the pedal assist which can use with the included controller such that you use less effort to pedal.

The best electric bike conversion kit in UK 2021
The best electric bike conversion kit in UK 2021

Buy Now on Amazon

How to choose the best electric bike conversion kit for you

Volts and watts

When you’re looking at electric bike conversion kits, the headline figures show volts and watts. Volts can be looked at as the force available to propel the bike. More volts generally equals faster acceleration. Watts are best seen as the maximum power available. Although other configurations are available, most of the time you’ll see one of these three:

36 volts, 500 watts 48 volts, 750 watts 48 volts, 1,000 watts

There’s little point in putting a 48-volt battery on a 500-watt motor — it’s more power than the motor is capable of using efficiently. By the same token, a 36-volt battery has insufficient energy for a 750-watt motor.

Amp hours

The other important factor is the Amp hours (Ah) of the battery (sold separately), which is effectively the fuel level. If you take two 36-volt batteries — one rated at 10Ah and the other at 16Ah — the latter delivers consistent output for much longer, giving you greater range.


Although manufacturers often give expected top speeds, several factors other than volts and watts have an impact. Most important are the weight of the bike and rider, and the overall condition of the bike. There’s a lot of difference between a well-maintained bike that’s moving freely and one with a rusty chain and gears that can sap the motor’s energy.

Where to fit your drive

Front wheel electric bike conversion kits are often less expensive, easier to fit, and you retain the bike’s existing gearing. On the downside, they add a lot of extra weight to the front of the bike, which affects the feel. There’s usually an increase in front-tire wear.

Rear wheel electric bike conversion kits retain a more natural feel, because the drive is coming from the rear, as before. That said, the front can feel light, particularly when accelerating. Fitting is a little more complex, and kits often cost more.

So, which is best? It really depends on whether price is the major factor (choose front drive), or you want to retain as much of your bike’s original handling as possible (choose rear).

Those are the main options, though there are others that increase convenience. You might want to think about throttle control (twist grips are easier to control than thumb levers), and useful extras like battery-level indicators or handlebar displays for speed and distance.


Inexpensive e-bike conversion kits can be found for around $160 and are 36-volt, 500-watt models. Most 48-volt, 750-watt or 1,000-watt models cost between $190 and $250, with a few as much as $400. That’s still a big savings over buying a complete electric bike but bear in mind, the battery and charger aren’t included. They add anywhere from $230 to $400 to the price.

The best electric bike conversion kit in UK 2021
The best electric bike conversion kit in UK 2021


It is not easy to choose the best electric bike conversion kit between the ones that are listed, but I am certain you will find one that is perfect for you. When buying an Ebike kit the saying “you get what you pay for” is certainly true.

Especially when choosing between batteries. There are many types of batteries that are cheap but they will not serve you well in the long run. A good Li-Ion battery in a waterproof and easily accessible casing is hard to beat.

Depending on your technical knowledge and experience with bikes we are sure you will find it easy installing the kit you have chosen. We hope you have found this guide about the best electric bike conversion kit helpful, and that you will enjoy your new electric bicycle.

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