Virvolt 900 – mid-drive conversion kit
The most powerful Virvolt kit. A mid-drive motor with torque sensor that feels natural on every ride: ideal for hills, heavy loads and cargo bikes. Assembled in France and repairable for life.Specifications Mid-drive motor with torque, cadence and speed sensor...
Description
The most powerful Virvolt kit. A mid-drive motor with torque sensor that feels natural on every ride: ideal for hills, heavy loads and cargo bikes. Assembled in France and repairable for life.
Specifications
- Mid-drive motor with torque, cadence and speed sensor
- 250 W rated, 600 W peak, 80 Nm torque
- 5 assistance levels, up to 25 km/h
- Motor weight: 3 kg
- Fits BSA bottom brackets 68–73 mm, wheels 26" to 29"
- For city, trekking, road, gravel, hardtail MTB and family cargo bikes (carbon frames on request)
- Kit includes: motor with 42T chainring, cranks, battery with mount and key, display, charger, speed sensor
Installation and full bike check included
Electrifying a bike is a modification of the vehicle. A motor adds speed, torque and weight, so every conversion in our workshop in Laeken starts with a complete check of your bike: frame, brakes, wheels, drivetrain and steering. Where needed, we rebuild it so it can ride safely in traffic. If parts need replacing, we tell you the price before we start.
After your order, we contact you to book the installation. Not sure your bike is compatible? Bring it by or send us a few photos and we'll check it for you.
Legal and safe
EN 15194 certified: 250 W rated power, assistance only while you pedal, cut-off at 25 km/h. Your bike stays a regular pedelec, with no registration needed. 2-year Virvolt warranty with professional installation.
Pickup & returns
Ride it through work
Employees and self-employed can lease bikes through o2o, Cyclis, b2bike, Lease a Bike or Joule. It's up to 40% cheaper than buying.
Questions
Riding in Brussels? Here's what people ask us most. Something else? Ask us.
Can I test ride before buying?
Yes. Come by the shop in Laeken, Tuesday to Saturday, and try the bikes we have in stock. Book a test ride to make sure your model and size are ready.
Which bike handles Brussels' hills and cobbles?
Brussels is hillier than it looks. For daily climbs, choose an e-bike with a mid-drive motor and wider tyres that cope with cobbles and tram rails. Tell us your route and we'll suggest the right motor, battery and gearing, then you can try it on a test ride.
How do I protect my bike against theft in Brussels?
Use two good locks, for example a frame lock plus a solid U-lock or chain attached to something fixed. Register your frame number with MyBike, and at home look for a secure bike box or bike parking in your commune. Ask us about locks and theft insurance when you buy.
Can I lease this bike?
Yes, through your employer or as self-employed via o2o, Cyclis, b2bike, Lease a Bike or Joule. It's up to 40% cheaper than buying. How leasing works.
Do I get a bike allowance for cycling to work?
Most employees who cycle to work are entitled to a bike allowance from their employer, electric bikes included. In 2026 it is tax-free up to €0.37 per km, capped at €3,690 a year. Your sector or company sets the exact amount.
What's the difference between an e-bike and a speed pedelec?
An e-bike assists you up to 25 km/h: no number plate, no licence, helmet recommended. A speed pedelec assists up to 45 km/h and needs a number plate, insurance, a helmet and an AM driving licence (a car licence includes it). Not sure which suits your commute? Ask us.
Is the bike ready to ride when I pick it up?
Yes. Our workshop assembles, checks and adjusts every bike to your size before you collect it at the Laeken shop.
Who services my bike after I buy it?
Our in-house workshop in Laeken. Bring your bike in for a check-up, repair or warranty question, and we deal with the brand for you.
Can I return my bike?
Yes, within 14 days. Read our returns policy.
Are pedals included?
We provide pedals so you can hit our test track right away. Need help finding the right pair? Foldable, griptape, freeride or clip-in: we've got them all.
Can I change parts or customize the paint?
Saddle, bars, tyres, wheels or a full custom paint job: bring your ideas and we make it happen.
Can I get a special offer, bundle or trade-in?
Ask us for a tailored offer, including a sweet deal on accessories or a trade-in of your old bike.