Virvolt 750 Kit - Everything you need to know about it

The electric bike market has experienced strong growth in France in recent years, demonstrating a lasting enthusiasm for more sustainable mobility. But do you need to change your bike to take advantage of this trend? Not necessarily.

THE electric bike kit, in particular the Virvolt 750 kit, allows converting a bicycle into an electric bicycle without having to buy a whole new model. This solution combines economy, ecology and performance.

In this article, we explore in detail the features, advantages, and operation of our kit for Virvolt 750 electric bike, A choice renowned for its discreetness, integrated torque sensor, and ease of installation. Thanks to its compatibility with a wide range of bicycles (from city bikes to mountain bikes), this kit represents an ideal solution for uncompromising electrification.

Summary

1. The Virvolt 750 Kit: what is it?
• How does this electric bike kit work?
• What does the Virvolt 750 Kit consist of?
• What types of bicycles is it designed for?
2. Performance, compatibility and installation
• What power and torque does the kit offer?
• Which batteries and screens are compatible?
• How do I install an electric assist kit?
3. Why choose a rear wheel electrification kit?
• What are the advantages compared to a ready-to-use electric bike?
• Torque sensor or cadence sensor: which should you choose?
  
4. Manufacturing process: local expertise
5. Cost and profitability of the Virvolt 750 kit
6. Conclusion: Converting your bike with the Virvolt 750 kit is a wise choice in 2025.
   

1. What is the Virvolt 750 Kit?

How does this electric bike kit work?

THE Virvolt 750 electric bike kit is a complete motorization system designed to transform a classic bicycle into an electric bicycle without radically altering its architecture. Its operation relies primarily on a motor integrated into the rear wheel, a proven technical solution that combines efficiency, ease of installation, and robustness.

Unlike mid-drive motors, the rear-wheel motor acts directly on the wheel, providing a thrust that perfectly mimics the natural dynamics of cycling. This motorization produces a sensation very close to traditional pedaling, which is a priority for many users looking for a electric bike kit which does not distort the conduct.

Below is an electric bicycle with a Virvolt 750 kit, respecting its original design. 🚲

At the heart of this system, a sophisticated torque sensor continuously measures the force you exert on the pedals. This means that as soon as you start pedaling, the system automatically adjusts the motor's power output to match your actual effort. The result is perfectly proportioned assistance—neither too much nor too little—making each pedal stroke feel natural and fluid. The cyclist experiences an amplification of their effort without any interruption in the dynamic.

The motor operates at 36 volts and a maximum current of 11 amps, providing a nominal power of 400 Wh. This power is sufficient to tackle most terrains, from flat paths to steep inclines, with a range that can vary depending on the battery capacity chosen.The system is controlled by an intelligent electronic controller, which regulates power based on sensor data and user-defined preferences via the control screen.

The system is also safe: the assistance cuts off instantly when you stop pedaling, guaranteeing complete control of the bike. This automatic cutoff is essential to comply with current regulations and to avoid any risk while riding, especially in urban areas. Furthermore, this system does not affect the bike's handling since the motor is integrated into the wheel, which minimizes changes to the center of gravity and adds weight.

Thus, this electric bike kit The Virvolt 750 offers an accessible, high-performance electric conversion that respects the very essence of cycling. Whether you're an urban cyclist looking to simplify your daily commute or a mountain bike enthusiast wanting more power for your rides, this kit provides a tailored solution.

What are the components of the Virvolt 750 electric bike kit?

The Virvolt 750 electric bike kit comes with everything needed to convert a regular bicycle into a high-performance electric bike. Each component is designed to work seamlessly together, ensuring an optimal user experience.

The main component is the rear drive wheel, which incorporates a brushless motor of 250 W has Maximum torque of 36 Nm. Operating in 36 V and equipped with internal torque sensor Integrated directly into the cassette body, this motor ensures smooth and responsive assistance. It is compatible with cassettes 7 to 11 speeds, and its compact design contributes to a discreet installation. The motor can handle 3 to 5 levels of assistance.

THE controller, Integrated into the battery support for the "Beginner" and "Standard" versions, it acts as the brain of the system. It interprets the data from the torque sensor and regulates the power delivered to the motor to provide assistance adapted to the cyclist's effort.

THE internal torque sensor (and not external to the crankset as with our Virvolt 500 Kit) directly measures the force applied by the cyclist, offering a much higher responsiveness than conventional cadence sensors.

There battery which is always included in the kit can be either a version Beginner (7 Ah) or a version Standard (10.5 Ah), Both require a specific support with an integrated controller (supplied when ordering our kits). These lithium-ion batteries guarantee a suitable range depending on the user's profile and the driving conditions.

The kit also includes a control screen : the model SW102. These screens, mounted on the handlebars, allow you to choose the level of assistance, view your speed, battery status, and access various settings. They use the UART protocol for communication with the engine.

There wheel is mounted on black rims 24, 26, 27.5 or 28 inches, with black spokes (36 per wheel), assembled according to a spoke pattern 3 crosses. The rims (Mac 1 260 or Mac 1 670) and spokes are manufactured and assembled in France.The system is compatible with brakes that skates or disc.

Finally, the kit is completed by all the cables, connectors (JL-F-Z910 - 20 cm), fixings and accessories necessary for a clean and weatherproof installation.

Thanks to all these components, the Virvolt 750 electric motor kit is a complete, robust and efficient solution for converting a classic bicycle into a quality electric bicycle.

What types of bicycles is this kit suitable for?

One of the great advantages of electric bike kit The Virvolt 750 boasts extensive compatibility with a wide range of bicycles. Whether you own a classic city bike, a robust mountain bike, a trekking bike, or even an older model, this kit can be adapted to transform your trusty steed into an electric bike.

The motor wheel is compatible with several wheel sizes, ranging from 24 to 29 inches, which includes the majority of modern city bikes and mountain bikes. It fits both disc brakes and rim brakes, an important feature for ensuring safety and compatibility.

In the field of electric mountain bike kit, This kit stands out for its robustness and power. Mountain bikers will appreciate the motor's ability to deliver high torque, useful for climbing steep slopes or overcoming technical obstacles without excessive fatigue.

For urban cyclists, the Virvolt 750 allows them to keep their original bike while adding efficient electric assistance, thus avoiding the need to invest in a complete electric bike. This represents a significant cost saving while also being environmentally friendly, as it extends the life of an existing bicycle.

Furthermore, users of older or vintage bicycles can also benefit from this kit. Installation requires no major structural modifications, allowing the original charm and style to be preserved while enjoying modern electric assistance.

In summary, this electrical kit Virvolt 750 is a versatile solution that allows a wide range of bicycles to be converted, opening the door to accessible and personalized electrification.

2. Performance and compatibility of the Virvolt 750 electric bike kit

What power and torque does this kit offer?

THE Virvolt 750 is an electric motor kit designed to offer a powerful, smooth and natural assistance on a daily basis. The assistance is responsive and intuitive, thanks to a integrated torque sensor which instantly adjusts the power according to the effort exerted.

Lightweight (weight in total between 3.4kg and 3.9kg (depending on the battery chosen) and well integrated into the rear wheel, the Virvolt 750 allows the bike to retain its maneuverability while adding a real boost to the effort, Where it counts. It's an engine versatile and robust, ideal for those looking for a balance between performance, comfort and simplicity.

The assistance provided by this kit is regulated by an electronic controller that continuously adjusts the power output based on data from the torque sensor. This means the motor delivers progressive assistance, proportional to the cyclist's effort.This feature significantly improves the quality of the ride compared to kits equipped only with cadence sensors, which merely detect movement without measuring the actual effort.

The maximum assisted speed is limited to 25 km/h, in accordance with European regulations for electric bicycles. Above this speed, the electric assistance automatically cuts off, allowing the bicycle to remain in the legal category of electrically assisted bicycles (pedelec).

Which batteries and screens are compatible with this electric assist kit?

To ensure smooth and efficient assistance, the battery plays a crucial role in complementing the motor. The Virvolt 750 kit is compatible with several lithium-ion battery models offered by Virvolt, providing good adaptability to different usage profiles.

Two main models are available:

• Beginner battery (7 Ah): lightweight and compact, ideal for short or occasional trips.
• Standard battery (10.5 Ah): offers increased range for daily commutes.

These two batteries require a specific support incorporating the controller, designed for easy and secure installation.

These water bottle-sized batteries are designed to be easily removable and rechargeable, while ensuring a secure fit on the bike thanks to a robust mounting system.

From a user interface perspective, the kit is compatible with one screen model:

• SW102 : a compact and discreet black and white screen.
  

These screens use the UART communication protocol, ensuring good synchronization with the engine.

Mounted on the handlebars, these screens allow you to control the assistance levels (from 3 to 7), display speed, battery level, and access various useful information at a glance. Their ergonomic design ensures readability in bright sunlight and resistance to the elements.

Finally, all cables and connectors included in the kit (including the JL-F-Z910 connector) are designed to withstand moisture, vibration and outdoor conditions, ensuring long-term durability.

Thanks to this well-defined compatibility, the Virvolt 750 V2 kit is suitable for both urban use and longer adventures, while remaining easy to configure.

How to install a Virvolt 750 electric bike conversion kit?

At the house of Virvolt, the installation of our kits — such as the Virvolt 750 — is not left to chance. Unlike other brands that offer do-it-yourself installation, our kits are exclusively assembled by of the professional partners, selected and trained by us. This guarantees a Reliable, secure installation, perfectly adjusted to each bike, whether it's an urban model or an all-terrain bike. By entrusting the installation to a Virvolt authorized distributor, The user benefits not only from optimal assembly, but also from personalized advice and of a local after-sales service.

Here is an overview of our distributor network in France, Belgium and Switzerland 🌍

Regarding the assembly, the first step is to replace the standard rear wheel with the supplied motor wheel.This operation may require removing the original wheel, disconnecting the brake if necessary, and then attaching the motorized wheel. Compatibility with most wheel sizes simplifies this step.

Next comes the mounting and wiring of the controller, often installed under the luggage rack or on the frame, as well as the installation of the torque sensor around the bottom bracket. The sensor must be calibrated correctly to ensure an accurate measurement of the force applied.

The control screen is mounted on the handlebars, with a cable connecting it to the controller. The battery must be attached to the frame or the luggage rack, depending on the user's preference.

The electrical wiring, supplied with waterproof connectors, is designed for easy and error-free assembly. Once everything is in place, a testing and adjustment phase is necessary to ensure proper operation and optimize the assistance provided.

Thus, our Virvolt 750 kit is assembled by our partner distributors in 45 minutes to 1 hour on average, depending on the complexity of the bike and the need for modifications. This electric bike conversion kit offers an excellent compromise between performance and ease of installation, allowing everyone to convert their bike with confidence and peace of mind.

3. Why choose an electric motor kit for the rear wheel?

What are the advantages compared to a complete electric bike?

Choose a electric motor kit Converting your bicycle into an electric bike offers several significant advantages compared to buying a complete electric bike. The first advantage is, of course, the cost: installing a electric bike kit The Virvolt 750 is often cheaper than buying a new electric bike of equivalent quality. For a smaller budget, you get a high-performance motor tailored to your specific needs.

Next, the conversion with a electric bike kit This allows you to keep your favorite bike, often a well-worn model, customized or perfectly suited to your body type and intended use. This avoids investing in a complete bike that might not exactly match your expectations or habits.

The environmental aspect is also paramount: converting an existing bicycle to an electric bike, rather than buying a new one, reduces the carbon footprint associated with producing a new bicycle. It's a sustainable action that aligns with an eco-responsible approach. Furthermore, the added weight is often limited compared to some complete electric bikes, whose central motors or integrated batteries can significantly increase the overall weight.

In terms of maintenance, a electric assistance kit The Virvolt system, for example, is easier to repair or upgrade. All parts are standardized and replaceable without major difficulty, unlike some electric bikes with proprietary and less modular systems.

Finally, flexibility of use is an important plus: this kit allows you to choose your level of assistance, adapt the battery according to your needs, and even remove the system if necessary, for example during a trip or sporting use without assistance.

Torque sensor or cadence sensor: which to choose for your electric bike kit?

When choosing a electric bike kit, One of the essential elements to consider is the type of sensor used to trigger the electric assistance. There are two main types: cadence sensors and torque sensors.

The cadence sensor simply measures the rotation of the pedals.It detects if you're pedaling and activates the assistance accordingly, usually in a binary fashion (on or off). This system is simple and economical, but it lacks finesse: the assistance doesn't vary according to the actual effort, which can make riding less natural. For example, pedaling gently or hard triggers the same level of assistance.

THE Virvolt 750 electric motor kit It is equipped with a more sophisticated torque sensor. This sensor measures the pressure exerted on the pedals and adjusts the power output in real time according to the effort required. This allows for much smoother, more intuitive, and proportional assistance that follows the cyclist's rhythm and intensity. Pedaling thus retains its natural feel, which is particularly appreciated on mountain bikes or during long rides.

The choice of sensor therefore greatly influences the user experience. Torque sensors, although more expensive, are recommended for those who want an experience close to that of a traditional bicycle with responsive and comfortable assistance. Cadence-based kits remain a viable option for simple urban use and those on a limited budget.

4. Manufacturing process: local expertise at the service of quality

THE Virvolt 750 electric bike kit It doesn't just perform well on paper: it benefits from a rigorous manufacturing process and local expertise that guarantee its robustness and reliability. Unlike many mass-imported conversion kits, Virvolt focuses on a gradual industrial relocation, thus promoting quality and control.

Each component of the electric motor kit is carefully selected.

The rear wheel motor of the Virvolt 750 kit is currently made in China, in specialized partner factories. However, its wheel mounting (motor mounting on rim) is already done In France at the Bicycle Factory in the Lyon region. This is a key first step in the relocation process.

🔧 Target 2025 : beginning of theengine assembly in France, within the Renault refactory in Flins, a website dedicated to the circular economy and industrial innovation.
🛠️ Target 2026 : progressive production of main engine parts on French territory.

The controller, integrated into the battery holder, is currently imported but developed in partnership with carefully selected suppliers. It is designed to fit perfectly with the Virvolt 750 motor, ensuring a smooth power management and one optimal responsiveness to the cyclist's effort.

The batteries offered with the kit (7 Ah and 10.5 Ah) are currently assembled outside of France, from lithium-ion cells Samsung and LG. They incorporate electronic protection systems against overloads and short circuits.

🔋 Target date: 2025 : launch of a 36V battery assembled in France, with the eventual goal of local production of key components. This initiative aims to offer a competitive and sustainable "Made in France" solution.

The kit is compatible with screens SW102 And BO2N, currently imported. However, Virvolt also plans to relocate production of this item.

💡 Target 2026 : beginning of theassembly in France of the Virvolt Horizon screen, with a plan to produce its electronic components locally at a later stage.

Alongside this gradual industrialization, Virvolt maintains a responsive after-sales service, A network of trained partner distributors for the installation, and the clear technical resources to guarantee a reliable long-term experience.

5. Cost and profitability of the Virvolt 750 kit: a sustainable and strategic investment

In a context where soft mobility is taking up more and more space, the Virvolt 750 electrification kit stands out as an economical, sustainable and efficient solution for transforming your classic bicycle into an electric bicycle.

The price of the complete kit – including rear wheel motor, internal torque sensor, controller, screen (SW102 or B02N) and battery – generally varies between 890 and 1200 euros, depending on the battery capacity chosen (7 Ah or 10.5 Ah), the screen model, and any additional accessories (lighting, specific support).

While this initial investment may seem significant, it remains considerably less than the cost of a new electric bike, which often exceeds €2,000 for equivalent specifications and quality. Conversion therefore allows for electrification at a lower cost, while retaining a bike that you know, love, and that is well-suited to your body type.

Beyond the initial purchase, the profitability of the Virvolt 750 kit is measured over the long term: a solid lifespan, individually replaceable components, and minimal mechanical maintenance allow for significant savings on daily transport (fuel, subscriptions, car maintenance, etc.).

The choice between several batteries (7 Ah or 10.5 Ah), combined with a 250 W/36 V motor, offers a realistic range of 40 to 80 km, suitable for both daily commuting and leisure rides. Thanks to its 36 Nm of torque, the kit is also well-suited for hilly terrain or off-road use.

Finally, with the ramp-up of French production (shelf already locally sourced, screens manufactured in France, and a battery made in France slated for release by the end of 2025), the Virvolt 750 kit is part of a responsible relocation strategy, reinforcing its ethical value. It's both an economically sound and socially conscious choice, supporting local industrial innovation while reducing the carbon footprint.

In summary, the Virvolt 750 is not just an engine: it is a concrete lever for freer, more accessible, and more sustainable mobility.

6. Conclusion: Converting your bike with the Virvolt 750 kit, a wise choice in 2025

THE Virvolt 750 electric bike kit Today, this kit stands out as a reliable, powerful, and accessible solution for anyone wanting to convert their bicycle to electric without changing models. With its high-performance rear-wheel motor, integrated torque sensor, and easy installation, this kit meets the needs of both urban cyclists and mountain bikers.

It combines the comfort and power of an electric bike with the simplicity and agility of a classic bicycle. Its local manufacturing process guarantees quality and durability, while its cost remains competitive compared to buying a new electric bike.

Whether for everyday use, sporty rides, or commuting by bike, this electric bike kit is an excellent compromise, suitable for a wide range of bicycles. It perfectly embodies the trend towardsbicycle electrification sustainable and responsible.