• What is the delivery deadline?


When we receive your order, we send your product with a delivery of 10 days (by colissimo), expidition delivery 24-48 hours.
  • If I have a problem to install the wheel myself?


If you want more information than the video and the installation manual, our team is available for any further information, sending pictures, documents, help by phone, call us  00 33 1 42 04 52 33 or by mail.


  • What is the weight of the Rool'in wheel?


We have 3 sizes of wheels, the average weight is 6 kg.
Rool' in required 3 years of research and development, all the elements were integrated to have a perfect balance.
Since the bike is in movement there is no heaviness in the direction, it is fluid and precise, in fact you find the characteristics of your bike, the same distance of braking, reactivity during the bends, …


  • What is the real autonomy of the wheel?


With Rool’in you have an electric assistance up to 50 km according to numerous variables (weight of the person, wind, height difference, pedaling force, selected level of assistance,…).


  • What is the life cycle of the battery ?


Our wheel has a battery (lithium-ion Panasonic) with a life cycle of 700 cycles (loads), more than 20 000 km.


  • At the end of my battery life, should I buy a new wheel ?

No, you have to contact us and we can replace the batter, you just have to send back to us, we proceed to an exchange and recycle the old battery for a 350 euros cost.
As all the batteries, to protect their autonomy, it is necessary to charge it at least once every 2 months.


  • The button light of the wheel remains red after 12 hours recommended during the first charge.


It is completely normal, this is the light of the charger which change orange in green.


  • May I bike in the rain?


Yes, your Rool' iwas designed to resist to the humidity, components are protected: they are not afraid neither the rain, nor the sand, or the dust.


  • May I paint my wheel?


The anthracite grey hood of wheels is in aluminum, you can paint them if you want.


  • Who can i contact if I have a problem with the product or if I need for information?


Your product is guaranteed 2 years and 1 year for the battery. If you have a problem, our after sales service based near Paris will indicate you the procedure to the repair fastly. We listen to answer all your questions : 01 42 04 52 33.


  • What can i do if I burst my wheel?


In case of flat, it is enough to proceed as on any bike, remove your tire and replace your inner tube, available on our shop for wheel of 28 inches.


  • I would like to replace the tire of my bike, is it possible?


You can change your tire: our wheel rim is of standard configuration.


  • May I install any type of tire?


Yes, on the condition of staying in the good larger from 1.1 to 2.3 inches.

  • Is it easy to go up the wheel on my bike?


Besides the manual installation which is delivered with your product, you have a video of help to the installation by clicking here. You can notice by yourself the simplicity and the easy manipulation required. Naturally our team are at your disposition to answer any interrogation.


  • I have a bike with a mechanical disk brake. Can your wheel adapt it to my bike?


If you have this type of brake, it is necessary to get our disk brake in our Shop..


  • Did you think about the secure ? I heard that the electric bikes is stolen


You have two levels of protections:

- A mechanical protection in the valve location, you have a space enough important to cross a chain and hang on your wheel.
- A protection type "code", after having hung on your wheel, you can remove the display of your handlebars, and the bike is not electric any more… every display is scheduled in factory to communicate only with one wheel.

For Smart version, you have to remove the pedelec sensor, in 10 seconds.


  • What about the damages in town?


One of the interests of Rool' in, it is because everything is integrated in the wheel and closed by a hood. When you go to make your races in town, you remove your display : the electric assistance is not functional any more. So we avoid the possible damages on a electric wheel : torn away display, cable power / command split …



To know more about the electric wheel, contact us by phone to 01 42 04 52 33 or by mail.

Your questions, our answers

Question by giuseppe
Hello I would like to know if you can send the electric wheel in sardinia, Italy and how much it could be. I am interested in a 20" one.
Answer by L'équipe Rool'in
We send Rool'in in France and Europe by express with the same price than in French (in average 35 euros according to the size of the wheel you want.
We are at your disposal for any questions.
Best regards

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.