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A genuine road bike for children

All Bikes - Triban 3 Junior, Road Bike, white B'TWIN
All Bikes

B'TWIN Triban 3 Junior, Road Bike, white

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cycling for children aged 7 to 11 years (125 to 150cm).

To view our full range visit our kids bikes category.

Unfortunately, this products is out of stock

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Reference : 8129804

your reviews

3.8 / 5

5 reviews

4 people recommend this product

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Boys road bike

It looks nice

Back tyre flattens with every use


  (United Kingdom)

40-49 years old    Woman

1 5

used for More than 2 years I appreciate I am late in leaving this review. However, I have returned this bike to the store on at least two occasions since I bought it. They have been very helpful and done free repairs but the problem persists. For the last year the bike has been in my garage unused. Recently I took it to a local bike shop and they replaced the tyres as they said the usual ones were way too thin. My son has ridden the bike once since and soon after we returned home we noticed the back tyre was flat again. I have removed the inner tube and checked for a puncture and there isn't one. I can't help thinking there is something wrong with the rim of the wheel but I was assured by Decathlon staff previously that this is not the case. I intend to return it to the store so they can road test it. As it stands this bike is not fit for purpose.

Response of the brand

You are right to return the wheel to store to get it checked.  They can see where the puncture occurred and try to marry that up with the rim/tyre to verify.
I hope you get back on road with your son as soon as possible.
Peter Lazarus UK Cycling Market Manager DECATHLON

Great little racer

Not to heavy, proper little road bike

Would be better with canti brakes


  (United Kingdom)


5 5

My daughter loves hers, a proper little racing bike with red tyres to make it go faster!

Starter racing bike

Good all round

Im not keen on the red tyres! But my lad loves it!


  (United Kingdom)


5 5

Great little bike, my lad loves it. It has shimano gears and has not had any issues since xmas. Shame they do not do a bigger version as he has almost outgrown it. You can get tyres and tubes just try the website that starts with a and ends in n!

Triban3 junior road bike

Good quality and low priced.

pedals straps are no good for young riders


  (United Kingdom)


4 5

Cracking little bike, easy gear shifters on handle bars, not to heavy unlike some bikes. Down side is limited choice of tyres, but you can get them and inner tubes easy enough. Pedal straps not really safe for younger riders. A lot cheaper than other brands, maybe not as good but good enough for 7 and 8 year olds to start on.

My Son's Xmas

everything an adult road bike has!

you can't buy tubes for tyres anywhere


  (United Kingdom)


4 5

a brilliant bike, great build quailty, will last through everything a young rider puts it through. The tyres are 24 x 23c, impossible to find replacement tubes.

Technical Information

  • 1

    Frame and fork Suitable for children over 125 cm

  • 2

    wheel Size 600 or 24 inch (23 - 540), , quick lockout at front and rear.

  • 3

    chainset 152 mm single 40-tooth chainwheel

  • 4

    Steel 14 - 16 - 18 - 20 - 22 - 24

  • 5

    derailleur shifter at the handlebars, near the stem

  • 6

    Pedals Pedals with toe clips and straps (detachable)

  • 7

    Saddle - Saddle post manual seat clamp for assembly and removal without tools.

  • 8

    Braking Double lever for maximum safety

  • 9

    bottle cage; 2 screws for attaching a bottle cage

  • 10

    stem in aluminium, aheadset system (not height adjustable)

Information / Concept / Technology

Test Product

the bike has been tested and validated for use by young cyclists who are members of an affiliated club. The bike meets the EN standards in force.

Stock advice

store bike in a dry place.

Care instructions:

clean with suitable products, rinse with water and dry with a cloth.