Kid Kit:
Family cargo bike – our add-on for moving around daily

From 1,150 €

Upgrade into a family cargo bike by replacing the front wheel of your bike with our Carry’Box Kid accessory. It is safe, compact and it takes a few minutes to install! Plus it is fully reversible!

It can transport a child (from 2 years old and up to 1.20m/3’9″ or 35 kg/77 lbs) and it was designed as the perfect family cargo bike for daily city commutes, in complete safety and comfort with your baby. Combined with a traditional child seat on the rear rack, it is the ideal solution for parents with two children wishing to travel by bike on a daily basis. The Carry’Box Kid turns your bike into the perfect bike to carry child!


WARNING: As the Kid Kit has a tilting wheel system, it is not suitable for people who are looking for stability on a bicycle (disabled people, people with reduced mobility, etc.). It allows a very dynamic driving which differs from that of a traditional bicycle. A short time of adaptation is necessary before adopting it completely!

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Description: The Kid Kit, our family front cargo bike accessory

Kid Kit:
a kids cargo system, an innovative add-on for parents

Turn your bicycle into a three wheeled bike to carry child safely. Simply replace its front wheel with the AddBike+ and add our Carry’Box Kid. With the unique and patented AddBike+ tilting system (Curve-Assist: both wheels lean to the side when you take a turn), your bike becomes a handy three-wheeler while staying dynamic.

The AddBike+ is the perfect eco-alternative that turns your normal bike into the perfect family cargo bike.

Add the Carry’Box Kid module to the AddBike+ frame and you will be able to carry your children. There are many possibilities so that everyone can find an option that suits their daily needs. Find our other modules: for dogs (Carry’Dog) or loads (Carry’Box). Make your dynamic three-wheeler your new daily means of transport!

  • Suitable for 2 year olds and up and a maximum height and weight of 1.20m/3.9ft and 35 kg/77 lbs
  • Suspended seat thanks to a hammock
  • 3-point safety harness
  • Quality UV resistant and water/wind proof fabric
  • Side reflectors
  • Painted steel frame
  • Weight: 17kg/37lbs
Kid Kit three quarter view

WARNING: The Kid Kit has a tilting wheel system which isn’t suitable for people looking for stability (this is not recommended if you have balance and/or motor skill problems for example).


Simply remove your bike’s front wheel and place its fork on our Quick-Fix system which then secures the bike attachment. The AddBike+ has an integrated, ready-to-use high-end brake system. Place the brake lever on your handlebar. You can then keep your old brake lever on or remove it.


The AddBike + is designed to be universal and can be fitted to almost any bike available on the market: whether it’s electric assist or not, a mountain bike, a folding bike,… You can therefore turn any bike into a cargo bike or an electric cargo bike to carry kids!


The AddBike+ has a tilting wheel system, you will therefore be able to make turns just like on a normal bike: this way, you can ride it like a bicycle, while still being able to carry loads. You can also adjust the AddBike+ wheels position making the ride more enjoyable depending on how you use it (“empty” / “loaded”) or your riding preferences.


By activating the tilt lock on the handlebars, the AddBike+  is stable when at standstill. This makes it easier to load and unload the bike but also to get on and off the saddle.


The Curve-Assist system can be adjusted to change the tilting level. So, if you prefer, you can make it less pronounced. This could make it easier to handle when learning to use the product.


The Carry’Box Kid is the perfect module to transport your children on a daily basis and in complete safety (which is our priority). Turn your bike into a cargo bike carry kids

Shock-Resist : rigid metal frame
See-Me : reflective strips on the sides
Rain-Blocker : waterproof cover
Safe’N’Secure : safety belt for children
Comfy-Cozy : hammock for extra comfort

The Carry’Box Kid was designed for families who want to make cycling their daily means of transport. Do you want to set the car aside and use a bike ? We have the solution! The AddBike+ fits an array of bikes (see compatibility sheet) and adding the Kid Kit allows you to turn your current bike into a child carrier bike. Even though it was originally designed for an urban environment, this system can also be used on small country roads!

Our child carrier bike (2 years old and up) is quick and easy to install but also uninstall. Its reversible system allows you to turn the three-wheeler bike back into a normal bike in just a few minutes. This system can adapt to everyone’s needs!

To find out more about its different uses, discover Clément’s experience with the Kit Kid in the countryside!


Curve-Assist system

Want to carry loads and still feel like you’re riding a bike? The AddBike+ comes with a clever system: Curve-Assist technology. Both wheels lean to the side when you take a turn (similar to 3-wheel scooters).

These are the pros of our double-patented system:

  • When carrying objects or passengers, the wheels will lean to the side during a turn, and the base will stay parallel to the ground in order for them to stay comfortable during the whole ride,
  • Thanks to the Curve-Assist system, the wheels tilt differently according to the direction taken. If you turn left, the left wheel will lean farther than the right one. This allows to keep cargo space between the wheels while being agile and dynamic.
    After all, the point of the AddBike+ is to carry more!
Conduite vélo_Cinématique Curve-Assist

Riding experience

Riding with an AddBike+ can feel quite different from riding a normal bike as it is similar to a cargo bike which can sometimes take a bit of time getting used to.

If you are a bicycle expert, you will probably get used to riding the AddBike+ on your bike quickly and may not have to practice for long. However, if you are a complete beginner, it may be longer to get used to it (from a few hours to a few days, so get ready to practice!). It all depends on how quick you get used to the new riding sensations the AddBike+ brings!

An important step is finding the perfect riding sensations for you so feel free to adjust the tilting of the Curve-Assist (3 positions) as well as other settings.

Agility vs stability

If you want to keep a bicycle’s dynamism and agility, our Curve-Assist system is a great option. It allows you to do everything you can do with a normal two-wheeled bike, such as riding out of the saddle, making tight U-turns or curve at high speed!

If you are looking for a tricycle-like stability, this isn’t the right option. The AddBike+ adds two wheels to the front of your bike so you would think that it brings more stability, however, it requires as much balance and skill as riding a normal bike. As a result, we don’t recommend the AddBike+ to users who aren’t comfortable on a normal bike or if you have balance and/or motor problems.

Compatibility of our three wheeled bike system with your bike

Check the compatibility of your bike with the Kid Kit

We have put together a tool for you to check the compatibility of your bike with the Kid Kit. Click below to try it 🙂

AddBike+ adaptateur 16" à 20"

16″/20″ adapter

For 16 to 20 inch bikes, you have the possibility to buy an adapter kit :

This kit allows you to install the AddBike + on an 16 to 20 inch bike. It’s made up of an axle, two nuts and two adapters. It replaces the AddBike+’s original axle, which isn’t suitable for 16 to 20 inch bikes.

Transformer mon vélo en vélo cargo

12 mm thru axle

This kit consists of two adapters and replaces the AddBike+ original ones.

They are used to insert the host bike Ø12mm/0.5″ thru axle (for a centre distance of 100mm/3.9″ to 110mm/4.3″) to install the AddBike +.

Axe traversant compatibilité vélo 15mm

15 mm thru axle

This kit consists of two adapters and replaces the AddBike + original ones.

They are used to insert the host bike Ø15mm/0.6″ thru axle (for a centre distance of 100mm/3.9″ to 110mm/4.3″) to install the AddBike +.

Technical features of the family cargo bike accessory


Weight: 13kg/66 lbs

Dimensions with wheels (w x l x h ): 70 cm x 77 cm (average length varies depending on wheel position) x 90 cm / 28″ x 30″ x 35″

Tire size: 20 inches

Colour: Black

Brakes: Hydraulic disc brakes

Rims: Aluminium

Transport load capacity: 33kg/73lbs max

Materials: Compact and steel

Chassis treatment: Cataphoresis and painting

Carry’Box Kid Module:

Weight: 4kg/9lbs

Available space inside (w x l x h): 45 cm x 55 cm x 70 cm / 18″ x 22″ x 28″

Structure: Steel

Colour: Grey, black and white



Storage capacity: 110 L

Transport load capacity: 35kg/77lbs max

Fabric: Water-proof and PVC fabric, reclosable lid


Installation of our three wheeler bike system on your own bike

Our family cargo bike can be installed in a few minutes and is reversible!

Tutorials for the Carry’Box Kid module

Install the AddBike+ on your bike

Customers opinions on our family cargo bike

‘’Amazing product, my daughter is so happy to go to school by bike!’’


“I got used to the product really quickly and it is really safe, that matters the most to me”


”Great time and the Carry Box Kids is perfect for my son” 


Questions and answers

How old does my child have to be to ride in a Kid Kit?

The child just has to be able to sit up on its own (without a car seat). We recommend 2 years old and up.

Up to what age can I put my child on the Kid Kit?
The weight limit is 35 kg / 77 lbs. In order for your child to be comfortably seated, its recommended that the child’s size doesn’t exceed 1m20 / 3.9ft. This means that the maximum age is 6 or 7 years old.
Can I put two children in the module?
Unfortunately no. Our module only has one seat (and one safety device): it is therefor designed for one child. But if you have two children, you can always add at child seat a the back!

You didn’t find the answer to your question ? Feel free to contact us, we will get to you shortly!

Services and Guarantees


By cycling enthusiasts and cargo bike experts.


Safety is our priority!
All our products are tested in specialised and accredited Pourquery and/or CRITT Sports and Leisure labs


AddBike designs and manufactures quality products
More than 230 shops in Europe trust us


Fast and effective customer service
We have all spare parts in our premises in Lyon


Our team is available 5 days a week
By phone: +33 4 78 59 98 76
By Email :


Full guarantee on spare parts
Valid for manufacturing and/or material defects

Additional accessories for our family cargo bike

Prix : 35,00 

Child bike helmet

Prix : 76,00 

Adult rain poncho

Prix : 90,00  TTC

Folding bike lock 6100/90

Prix : 15,00 

Adult hat


By cycling enthusiasts and cargo bike experts.


Many secure payment methods are available


Our team is available 5 days a week


Fast and effective customer service