Kit Donkey 250W front wheel with frame battery 36V 230Wh to 700Wh

Big brother of the Touring kit but with a more robust engine offering 55N.m of torque, it is suitable for drivers over 80Kg or those who want to pull a trailer or carry heavy loads.
This kit is suitable for cargo bikes with a 20' front wheel

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Contenu de ce pack:

Quantité : 1
269,00 €

Info Bulle

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92,00 €
  • Inox
  • Black
  • Yes

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79,00 €
  • Compact color
  • Vertical color

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86,00 €

Info Bulle

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20,00 €

Info Bulle

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25,00 €

Info Bulle

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15,00 €
  • 110 cm

Info Bulle

Quantité : 1
299,00 €
  • 36V 250Wh lockable gourd battery with up to 70 km range*
  • Frame battery n°1 500Wh up to 130 km of autonomy*
  • Frame battery n°1B 36V 700Wh up to 180 km range*

Quantité : 1
32,90 €
  • Jack
  • 2A
  • 4A

Quantité : 1
  • classic pack


New product

966,90 €
ou 3 x 327,62 €

- +

More info


The Donkey 250W kit is the big brother of the Touring 250W front wheel kit since the motor weighs 1kg more and delivers 30% more torque.
We recommend this motor for people over 80Kg on folding bikes or for users of cargo bikes with 20" or 24" front wheels.
This 250W Donkey front wheel electric motor kit delivers a torque of 55N.m and conforms to VAE 25km/h criteria for 250W.

This kit being in conformity with the VAE 250W 25Km/h standard, you can benefit from a subsidy from your department or your municipality for the purchase. The conditions of subsidies are variable according to the departments and the communes... Some are very generous and others offer nothing! Please contact your department or municipality for more information. OZO maintains a list of municipalities that offer assistance for conversion kits on the following link: See the grants by city



The "Donkey" motor is a reduced motor with reinforced epicyclic gear and internal freewheel. This allows you to have a lot of torque and a great facility with the pedalling since the engine is completely disengaged when it is not fed... You pedal like on a traditional bike without the motor braking you.

The "Donkey" motor is supplied with washers that will allow you to center the wheel in your frame. It can be installed on all traditional frames equipped with a front axle in 100mm of center distance.

You will be able to screw your brake disc to the standard 6 holes on the motor. For bikes with pad brakes, don't forget to order a rim with surfaced edges like the Kargo.

With your kit you receive a complete drive wheel. All our wheels are carefully spoked in our workshop by enthusiasts: spoke tension, centering, sail and false round, everything is checked before shipping.

The 36 spokes are made of stainless steel 2,3mm diameter, made in France.

These French made rims will allow you to use your kit in all conditions.

For bikes equipped with brake pads, choose a rim with surfaced edges like the Mach1 Kargo.


The external 15A controller comes with fully waterproof Julet connectors that are very easy to install. Each connector has a polarizer, you have no risk of making a mistake.

This controller comes with OZO water bottle batteries.

The internal 15A controller comes with fully waterproof Julet connectors that are very easy to install. Each connector has a polarizer, you have no risk of making a mistake.

This controller is delivered and compatible only with OZO frame batteries.


All connectors are waterproof and have visual keying. Impossible to go wrong when connecting.

A single cable goes up from the engine to the handlebars to connect the various accessories:

2 Red connectors for brake cut-offs

1 Green connector for the control screen on the handlebars (display)

1 Yellow connector for the accelerator (optional)


The choice of the capacity of the battery will have to be made according to the autonomy which you wish. For example, a 500Wh battery will give you approximately 50Km of range without forcing the bike and up to 100Km depending on your effort. A 1000Wh battery will give you double the autonomy.

The second criterion to take into account for the choice of the battery will be to know where you want to install the battery on your bike.

The 36V 230Wh water bottle battery is the lightest in the range and also the most discreet
It fits in the bike's original bottle cage and its water bottle format makes it easy to carry even in a handbag.
1.25Kg only
Compatible with all our 250W motors

The 36V 500Wh to 700Wh frame batteries can be installed on the frame of the bike instead of the bottle cage or on the luggage rack.

These batteries are equipped with an electronic charge and discharge regulation circuit called BMS. The BMS also controls the temperature of the pack and the balancing of the cells.

The charging socket for OZO 36V frame batteries is Jack DC 2.1mm.

All our batteries are guaranteed for 2 years.


Vertical black and white display, the entry level: Black and white display, it groups all the main functions. The remote selector allows you to turn the system on and off and to navigate among the 9 assistance modes. The original support is intended for an installation in the center of the handlebar, but we propose in option a support in stainless steel on stem for the VTT or the gravel.

Compact color display: Its compact size makes it perfect for mountain biking because it is not exposed to shocks. It is positioned to the left of the handlebars and directly integrates the + / - buttons allowing you to choose among the 9 assistance modes proposed.  

Vertical color display: With this display, you have access to the best of what is available on the EAB market. This model displays a maximum of electrical parameters and routes, has an auto-adaptive backlighting according to the brightness and a USB port allowing the recharging of a smartphone or GPS while riding. 9 modes of assistance fully customizable by the user: You are free to set the 9 modes so that your assistance best suits your needs. Remote selector to the left of the handlebars for better ergonomics.


On the wheel motor kits that are equipped with 15A controllers and more, you will need a pedal sensor. This will engage the motor and therefore the assistance of the bike.

The pedal sensor is a rotation sensor. You are obliged to pedal to have the assistance. There are several types of sensors to match 90% of bikes on the market.

Integrated bottom bracket sensor: For square axle bottom brackets that have a minimum clearance of 4mm between the crank and the frame.

Bottom bracket sensor with magnetic disc: For all other bikes that do not have the minimum clearance to install an integrated sensor.


The torque arm is a laser-cut stainless steel part that prevents the drive wheel nuts from loosening so as not to damage the frame of your bike.

The torque arm is essential with the Donkey kit.

To choose the right model for your bike, please read the instructions on the role of the torque arm.


The throttle offers the ability to control the motor without pedaling.

In the form of a thumb trigger, the throttle can be installed on the right or left side of the handlebars.

Note, however, that the throttle is not approved for use on roads open to traffic.

It can be used on a mountain bike to help with hill starts and obstacle crossing.

The brake cut-off is an additional safety feature that cuts off power to the motor when braking. This is particularly useful during delicate maneuvers.

The brake cut-off comes in different forms:

Brake handles that can be installed in place of your original handles.

The sensor on cable which is installed on the brake cable.

The magnetic sensor to be reserved for bikes equipped with hydraulic brakes.

or to be reserved for bikes equipped with hydraulic brakes.

The torque arm is a laser-cut stainless steel part that prevents the drive wheel nuts from loosening so as not to damage the frame of your bike.

The torque arm is strongly recommended for bikes with a carbon frame.

OZO has selected for you the best tires on the market. With integrated anti-puncture protection or double ply, you will find all the tires in the tires section


The Donkey wheel kit is compatible with all bikes equipped with a 9x100mm or 10x100mm front wheel axis.

To be sure that the installation is possible on your bike, you need to check that you have a traditional open frame with a 100mm center distance.

With a ruler, measure the inside width of your frame (value A). You must have at least 100mm (10cm).

Then measure the frame notches (B value). You should have 9 or 10mm.

Data sheet
Maximum speed35 km/h
Motor positionFront
Homologué aide de l'étatYes