Advantages of the Rool'in electric wheel

 Simplified installation

In a few minutes I install Rool’in as I want from a bicycle to another, it is adaptable. I take it on holiday or weekend. The electric wheel Rool’in represents a real saving of space and time.



No cables nor connectors. The wheel design allows a better reliability by eliminating the potentials problems associated with the possible degradation of the cables and connectors (wear, malicious damage…).


You have a security area around the valve that allows you to insert an antitheft device. Furthermore, without the console and the motion detector the bike is not an electric bike anymore. All the wheels of our customers are plotted with an engraved serial number.


Our wheel meets the current electric bicycle European legislation, particularly with European standard EN-15194.

* A VAE is precisely defined by the French and European legislation (requirement of EN-15194: 2009, validated tests to Rool'in see below):
  • Engine power exceeding 250W
  • The assistance is cut off when the electrically assisted bike exceeds 25 km/h
  • You need to pedal to have the electric assistance.

 An eco-responsible purchase

Do not emitting exhaust gas or CO2, the electric bicycle part in decongesting city centers, while reducing pollution levels.

The electric wheel has other advantages, notably to recondition your bike, making it more efficient for more regular use. It also allows climb hills with minimal effort.

After reaching the speed of 25 km/h, the electric bicycle motor cuts, its electricity consumption is thus of the order of 1 kWh for 130 km. The battery capacity is 230 Wh (170Wh for the 20 inches size) for an autonomy up to 50 km according to use.

 Get a mileage allowance

Since February 2016, employers can compensate their employees who travel to work by bike for 25 euro cents per kilometer. Optional, the allowance must be included in an enterprise agreement or unilaterally with the employer. It will then be combined with the support of part of the subscription to transport.

Drive smart!


Realize significant savings 

Adopt Rool'in is cheaper than buying an electric bike of comparable quality. Most journeys between home and the workplace are less than 3,10 miles. With a full battery recharging in less than 5 cents, it is 3000 euros which are saved each year compared to the use of a midsize car.

The bike, it is easy and effortless !

Handy, it allows you to make a race without searching for a place to park, you save valuable time in traffic and it offers you a faster responsiveness than a conventional bike.

Your questions, our answers

I’m asking a question, I make a note

The Rool'in team will personally answer you by email.
If your question is of general interest for other users, it will be published, preserving your anonymity.

Choose your electric kit unerringly

To purchase your electric wheel to your bike, you must first choose the right size.
Here's how to know the size of your wheel: on the side of your bike wheels, you will find the indication of the diameter of the wheel is expressed in mm 495, 650, 700, or inches respectively 20 ', 26', 28 '. See figure below:
tailles roues anglais
Les vélos VTT  et vélo de femme reçoivent les kits de roue électrique 26 pouces. Les vélos de ville sont complétés avec des roues 28 pouces, les vélos pliables avec des roues 20 pouces.
La roue électrique vélo en kit est livrée entièrement équipée et s’installe en quelques minutes.
Vous pouvez aisément profiter des avantages de l’Assistance Électrique pour vos déplacements en ville ou à la campagne. 
Les sportifs apprécieront le fait que l’aide est débrayable.
Rool'in rend votre vélo high-tech, économique et performant. Roulez devient un jeu d’enfant.

ATVs and women bikes receive electric wheel sets 26 inches. City bikes are complemented with 28-inch wheels, folding bikes with 20 inch wheels.

The electric bicycle wheel kit comes fully equipped.

Sports lovers will appreciate the fact that the aid is disengaged.

Rool'in makes your high-tech bike, economic and efficient. Drive becomes a pushover.

The « SMART » model

Fourche Rool'in Smart vélo électrique


We invite you to read 3 measures to respect for a perfect installation:

- The distance down the fork should be 100 mm (you can play up to 8 mm on the distance of the fork with washers)

- And 82 mm to 105 mm from the bottom (you can play up to 8 mm on the distance of the fork with washers)

- The diameter of the fork lug must be 10 mm

And it's very simple:

1) Download the mobile application entitled "Rool'in" available on Apple store and the Play store.

2) Set the wireless speed sensor on the opposite side of the chain to the pedal crank. Assistance works as soon as you pedal.

3) Establish the connection between the sensor and your mobile device (see manual).

The app has additional features (average speed, mileage on a run, total distance, ...) and will become the indispensable partner of all your walks.

With this wireless system, the detection of your movements is amplified, the electric assistance is instantaneous and fluid.

Buy the Smart

The « Original » model

 Check measures at your fork as above in the section Version "SMART".

 In addition, the kit comes with 2 mounting options for the pedal sensor or sensor 



1) Adjustable clamp system
attache elastique anglais

2) System with elastic

- The magnetic disc (D) also requires a space of 4 mm to be able to insert between the edge of the bottom bracket and pedal by clipping directly.

Buy the Original

For more information on the electric wheel, contact us by phone at  01 42 04 52 33 or mail.