Racingboy 500 Kids' 20-Inch Mountain Bike 6-9 Years



Made for sport cycling for 6- to 8-year-olds (1.20 to 1.35 m).
To ensure riders can easily overcome rough terrain, we've equipped this 20-inch MTB with a suspension fork. Easily overcome hilly paths with the 6 speeds.

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Ease of useMTB equipped with 6 speeds, with brake levers adapted to children's hands.
Shock absorptionFront suspension fork for absorbing impacts.
Lifetime warrantyB'Twin provides a lifetime warranty on the frame, stem and handlebar.
Warantyfor life (frame, stem, handlebars, rigid fork). Find out more about the bike guarantee.
Technical Information

Why have we created a brake lever specifically for children?
Because children have smaller hands than adults, it's not always easy for them to reach the brake lever. That's why our engineers and designers have designed them to be closer to the handlebars for easier grip. The brakes are now in reach of little hands!
Front suspension to cushion unpredictable terrain
Take on new challenging terrain (roots, stones, gravel, etc.) with ease thanks to the travel of the front suspension fork.
Changing gears (6 speeds)
This bike is equipped with a grip shifter to change between the 6 speeds: It's safer and easier for children as they don't need to let go of the handlebar to change gears. Changing gear to adapt to the terrain is easier than ever!
Controlled braking
Two V-Brake pads for effective braking. These brakes are composed of callipers that exert more or less pressure on the rim to slow or stop the rotation of the wheels.
Frame designed for mountain biking
This robust steel frame is designed to overcome obstacles on all your MTB outings.
A reinforced, ergonomic saddle
A saddle with a sporty design, designed with care to adapt to the morphology of children. It is equipped with a plastic cover at the back (a bumper) to protect from any impact.
20" wheels and MTB tyres
The tyres are designed for mountain biking. The side lugs provide good grip on turns. The recommended tyre pressure is displayed on the tyre sidewall. 20-inch 1.7 to 2.2 cross-section inner tube with Schrader valve.
MTB fittings
This MTB is equipped with a bell, a stand, lighting, wheel reflectors and a derailleur guard. The frame is also compatible with other B'Twin accessories: - front and rear mudguards - rear pannier rack
Dimensions of the bike ready to use
Length: 140cm. Height: 80cm. Width: 54cm.
Information / Concept / Technologie
Frame : 100.0% Steel

Stockage tips
Store the bike in a clean, dry place. Clean and grease the chain regularly. Our advice for before each ride: inflate the tyres to the pressure indicated on the sidewall.


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No travel in suspension
Used for 3 to 6 months
For most bikes you can switch the travel on or off but on this bike there is no apparent way to do this. So it doesn't really work.
Excellent value for money
Used for 1 week or less
We purchased this bike for our sons birthday and he loves it. The bike looks really grown up and he finds it easy to ride. The same spec of bike anywhere else was nearly so he the price of this one.
B'TWIN Racing Boy 500 Kids - LEAKING FORKS
Used for 7 to 12 months
Purchased this for my son for Xmas Dec 2017.
Cant fault the bike...accept....
The right front fork is now leaking black residue can be seen around the seal.
I have sent to emails requesting what can be done about this... to no avail.
Very disappointing customer service.
Great bike
Used for 2 to 8 weeks
This is a great bike for a growing boy. not too expensive with enough spec to teach him about using gears etc. Could use a place to put a water bottle but apparently there is an adaptor of some sort so I will be popping into store to find out.
v poor service
Used for 1 week or less
bike is ok but decathlon lost my order meaning the cancelled it before even informing me it was ready meaning i had to pay twice for the bike and await a refund. Bike was also assembled very dangerously and handlebars became detached whilst my son was riding within 5 minutes of getting home. fed back but customer service is v poor
Response of the brand
Dear Sir,
I'm very sorry to read that you encountered issues with your order as well as the bike set up.
Could you tell me if the 2nd bike was delivered to your home or was it set up in a store? if it was set up in a store, could you tell me which one?
All of our teams receive dedicated bike building training and have the correct tools at their disposal to safely and correctly set up customer bike which is why I wish to investigate this further.
Your reply will not be public and will come directly to my inbox.
I look forward to hearing from you.
Peter Lazarus, National Cycling Manager, DECATHLON
Used for 3 to 6 months
It is a good starting bike
Boys bike
Used for 2 to 8 weeks
Brilliant next stage boys bike. Good equipment and easy to use gears. This bike is well made and superbly priced.

The service in-store was absolutely amazing.

I would recommend this bike to any parent looking for the next stage bike for their child.
Kids bikr
Used for 2 to 8 weeks
Kid happy with present. So far no issues. Good check from the staff before buying it at Surrey quays ! Thank you
Used for 2 to 8 weeks
Bought this for my son as his First geared bike and he absolutely loves it. Great build quality, lifetime guarantee on the frame etc. Excellent service from the staff.
Online order
Used for 1 week or less
I got the cycle assembled and everything looks ok but how make it moving? Currently the wheels are not moving my be some security lock when it comes via parcel. Any one please let me know what I should do to make it running? Thank you.

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