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KIDS MTB BIKES 6-12 YEARS

B'TWIN Rockrider ST 120 Kids Mountain Bike, White/Blue - 20"

B'TWIN
4.5/5
Decathlon
until £119.99 -%

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£119.99**
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£119.99 -%
Before£0.00NoW£119.99**
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* From and limited stock
Check availability in store
We have designed this mountain bike for 6- to 9-year-olds (120 to 135 cm) who want to start mountain biking. To take on the first slopes, our engineers have equipped this kids' MTB with 6 speeds. This bike allows the rider to take on sloping terrain.
Not Available Now

We currently have limited capacity to build bikes in our warehouse. Due to this, we are limiting the number of bikes we sell per day and you might not be able to process your order at checkout. The count resets at 11pm every day so that would be the best time to try, although we do have a peak of attempts at this time so we can't guarantee a slot for everyone.

 

Technical Information

Frame designed for mountain biking

Our engineers have designed a new sturdy steel frame. The frame's rear chainstays are short, making the bike responsive and easy to handle.

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. This is why our engineers designed a brake lever that is closer to the handlebars and thus easier to hold.

Changing gear

This bike is equipped with a grip shifter to change between the 6 speeds: an easier, safer system as the child's hands stay on the handlebars.
This makes changing gears to match the terrain simple and easy!

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.

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 section on the rear (a bumper) to protect against any impacts.

Riding position

When mountain biking, it is important to control your path. To make it easier for children to learn, our engineers installed a handlebar and stem that are combined into a single steering block. This eliminates the needs for adjustments, so they can stay focused on the road!

Crankset

The new chainset has a 140 mm crank that is designed for a child's leg length. This chainset allows you to start pedalling more easily. The crank is covered to prevent the child from coming into contact with the metal part.
The double chain guard prevents the chain from derailing.

20" wheels and MTB tyres

The tyres are designed for mountain biking. The lateral lugs provide good grip on turns.
The recommended tyre pressure is indicated on the side of the tyre (2 to 3.5 bars). 20" inner tube, 1.7" to 2.2" Schrader valve.

MTB fittings

This MTB is equipped with a bell, lighting, wheel reflectors and platform pedals.
The frame is also compatible with other B'Twin accessories:
- front and rear mudguards
- stand
- bottle cage
- saddle bag
- stabilisers: https://www.decathlon.co.uk/20-and-24-stabilisers-id_8550741.html

Dimensions of the bike ready to use

Length: 140cm.
Height: 80cm.
Width: 54cm.

What if I order online?

For smoother shipping, our bikes come with their pedals removed and the handlebar unscrewed (instructions and tools are supplied)

Frame dimensions

Top tube length: 431.6 mm
Seat tube length: 285 mm
Chainstay length: 360 mm
Seat post length: 300 mm
Head angle: 68.8°

Weight

11 kg

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Composition / advice

Composition
Frame
100.00% Steel
Stock advice Store the bike in a clear, dry place. Clean and grease the chain regularly. Our tips for before each ride: inflate the tyres to the pressure indicated on the sidewall.
Restricted use : Wear a cycling helmet while riding. Max user weight: 80 kg

Our commitments

Guarantee : for life (frame, stem, handlebars, rigid fork). Find out more about this bike's warranty.
 

Product benefits

Ease of use Equipped with a grip shifter to easily change gears (6 speeds).
Brake control New Easy break brake levers are sized for children's small hands.
Efficiency Tyres with side lugs for good grip in the turns.
Cycling comfort A saddle with a sporty design, sized especially for kids.

FAQ

Q : How to assemble your bike?
Everything you need to know about making sure your bike is comfortable, secure and ready to ride.
Q : How do you adjust your brakes?
Having properly functioning brakes is vital when out on the road. Check out how to get them working to your liking.
Q : How to replace a brake lever on a bike?
Having properly functioning brakes is vital when out on the road. Here’s a video to show you how to make sure your new brake level is working nicely.
Q : How to replace a disc brake?
Having issues with your disc brake? Then this video is for you.
Q : How to adjust your bike handlebar?
A suitable handlebar height is essential to your cycling safety and comfort. Find out how to adjust it to your liking with our video.
Q : Do you offer a Cycle To Work scheme?
Find out everything you need to know about way of getting to work that’s good you and the environment.Check Here

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FAQ

Q : How to assemble your bike?
Everything you need to know about making sure your bike is comfortable, secure and ready to ride.
Q : How do you adjust your brakes?
Having properly functioning brakes is vital when out on the road. Check out how to get them working to your liking.
Q : How to replace a brake lever on a bike?
Having properly functioning brakes is vital when out on the road. Here’s a video to show you how to make sure your new brake level is working nicely.
Q : How to replace a disc brake?
Having issues with your disc brake? Then this video is for you.
Q : How to adjust your bike handlebar?
A suitable handlebar height is essential to your cycling safety and comfort. Find out how to adjust it to your liking with our video.
Q : Do you offer a Cycle To Work scheme?
Find out everything you need to know about way of getting to work that’s good you and the environment.Check Here

Our services

Rockrider ST 120 MTB Ages 6-9
Maintenance and repair
Maintenance and repair
Spare parts