Racingboy 300 Single Children's 20" Mountain Bike - White



Made for children ages 6 to 8 (120 to 135 cm) going on bike rides.
A sturdy, single-speed, children's 20" white bike that's easy to ride. Equipped with front and rear lights and a bell, it can be ridden around town as well as on trails.


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Ease of useA simple, effective, single-speed bike. Bike weight11 kg.
Bike safetyV-brakes provide easy, powerful braking.
Lifetime warrantyB’Twin offers a lifetime warranty on the frame, stem, handlebar and rigid fork.
WarantyLifetime (frame, stem, handlebar). Details on of spare parts: 2 years
Technical Information

The chainwheel anti-derailment device and low step-through frame make it easy to get on and off.
Accessories / equipment
Fully equipped for use on public roads (battery-powered lights, horn, reflectors). The rear derailleur guard protects the derailleur from damage in the event of an impact.
11 kg.
Type of productChildren's bike

Age6-8 years (120 - 135 cm)

Weight11 kg
nformation / Concept / Technology
Frame : 100.0% Steel


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Wee man's new bike .
Used for 2 to 8 weeks
Great bike for my wee man , the option to check the size was good because no kid will ever grow into a bike . Always buy the right size. There is enough adjustment room so it will last him a while .
He's flying around in it , which is great .
B Twin 20" bike
Used for 2 to 8 weeks
We bought 2 of these bikes for my twin grandsons 7th birthday. We commented on what a great idea it was that the bikes had "smiley" emojis on the brake handles pointing to the back & front brakes to show kids which bike was which.
OH DEAR!!!! My grandsons went to the park with their Daddy to try out their new bikes. One of them pulled the "back brake" - the one with the backwards pointing emoji, only to go flying over the handlbars when the front brake came on!
I took the bikes back to Decathlon to have them checked only to be told "the bikes come in from France and it is how they are made.
Everyone knows the right brake is always the back brake and vice versa."
Well guess what Decathlon, 7 year old kids don't!!
This was the only flaw we could find, a great idea but wrong way round!!
In all fairness the store gave me a voucher for future use, but my issue is the fact that my grandson could have been seriously injured had he been on the road.
This needs sorting out Decathlon - remove the emojis from these bikes to prevent this occurring again to some other child.
I will click the "YES" to reccomend this product as it is a lovely bike, but this problem does need addressing as a matter of urgency.
Lovely bike good quality
Used for 2 to 8 weeks
Really good value for money my son loves it and has spent every day on it since his birthday
Good quality bike.
I bought this product for my son's seventh Birthday on Saturday. I'm sure he'll love it. It's great quality and seems sturdy. Time will tell when he opens it on his birthday. Was packaged well and came a day early.
Solid bike
Used for 2 to 8 weeks
THe bike was ourchased for my 7 yr old sons birthday.
It arrived very quickly and setup was very quick as it was only the handlebars that needed pointing in the right direction and small back brake adjustment.

It feels like quick a solid bike, brake grips are plastic but do have a nive easy adjustment built in which is good.

The LED front/back lights were very low end, but wont be used anyway.
Good Bike - Poor Setup
Used for 1 week or less
Bike is very good and my 6 year old boy loves riding this. However, I had bike delivered rather than collect in store and when it arrived it appears that if any setup/check has been completed then this was a very careless or sloppy check prior to delivery.

Firstly the tyres were flat, easy enough to sort as I have a track pump, but more frustrating was the brake set up, there was no tension or stopping power when applying the breaks.

Fortunately I have a bike stand and know my way round a bike and had to tension the breaks correctly myself, it worries me if I hadn't checked this first and corrected before letting my son on the bike, he wouldn't have been able to break or slow the bike down.

Also, there is a small arrow pointing forward on the break lever which activates the rear break, and an arrow pointing backwards on the lever which activates the front break. I'm guessing these arrows are in place on each lever to help a child know which break is which ?, if so they might want to point the arrows on the correct direction on each lever.

In all bike is great, just don't relay on it being set up correctly once it arrives, and check if the arrows on break levers are pointing in right direction, otherwise tell your child to ignore the arrows !
Great bike!
Used for 2 to 8 weeks
My son is six and this was bought for his birthday!!
Customer service was perfect! Bike seems sturdy and well designed
white B'TWIN bike
Used for 2 to 8 weeks
Lovely bike well made and looks great. son really likes it. Very good customer service too. Bike was made up and checked and asked me to come back in 3 months to get it checked again as wires stretch.
Brilliant Bike
Bought for my 7 year old, he loves it and its very smart looking
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