B'Twin Rockrider ST 920 24" Kid's Hardtail Mountain Bike

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  7. B'Twin Rockrider ST 920 24" Kid's Hardtail Mountain Bike

As far as I'm aware this B'TWIN deal is sold out.

We've designed this mountain bike for children aged 9 to 12 years (135 to 150 cm) who want to perfect their MTB skills.

  • B'TWIN Alloy Hardtail Kids Bike with Suspension Forks
  • 24" Disc Brake Wheels
  • 9 Speed (Altus Groupset - 1 x 9)
  • Designed for MTB riding.
  • Was available in M in Green.
  • Weighs 12kg

B'Twin Rockrider ST 920 24" Kid's Mountain Bike

Equipped with the same aluminium frame as the 24" ST 900, this mountain bike has an air suspension fork to adjust to the child's weight and hydraulic disc brakes for effective downhill braking.

Ease Of Use: ALU frame and chainset for less weight.

Quick release for removing the wheels.

Brake control: Front/rear hydraulic disc brakes: Efficiency: Air suspension fork, Skinwall tyres for less weight, 9 speeds.

Cycling comfort: Sports saddle combined with an aluminium seat post for greater comfort.

A Frame That Is Suitable For Mountain Biking: Our engineers have designed a new aluminium frame.

Durable, lightweight and responsive: designed for tackling any obstacles when out mountain biking. Don't Be Scared Of Riding Downhill! Powerful, progressive braking thanks to the front and rear hydraulic disc brakes.

The disc brake acts on the wheel axle to deliver powerful braking under any conditions (dry, wet, muddy, etc).

Single Chainring Drivetrain: This bike is equipped with speed controls that are controlled using the thumb and index finger, allowing effortless changes between the 9 speeds. The 36-tooth single chainring and 11-36 cassette make it easy to shift gears and deal with any kind of hill.

With just one control to manage, you can focus on your trajectory.

Front Air Suspension For Cushioning On Uneven Terrain: This 24" ST 920 bike comes with an air fork that adapts to the child's weight. Take on new challenging terrain (roots, stones, gravel, etc.) with ease thanks to the travel of the front suspension fork.

Comfort When Riding: A saddle with a sporty design, designed with care to adapt to the morphology of children. Combined with an aluminium seat post (sturdy and flexible) for even greater comfort.

Riding Position: To hone your steering, we have equipped this mountain bike with a short aluminium stem (70mm) and a 540 mm oversize handlebar.

This makes you more precise and responsive on turns.

Aluminium Chainset: The new aluminium chainset has a 152 mm crank that is suited to the child's leg length. This light chainset allows you to start pedalling more easily.

The double guard over the chain stops it jumping.

Double-Wall Rims: The double-walled aluminium rims are light and durable. For transporting the bike, we've made it easy to attach/detach the front and rear wheels.

They are equipped with a quick-release system. 24-inch 1.7 to 2.2 cross-section inner tube with Schrader valve. Pressure indicated on the tyre sidewall (between 2 and 3.5 bar).

Dimensions: Length: 160cm.

Height: 100cm.

Width: 60cm.

Frame Dimensions: Top tube length: 479.3 mm.

Seat tube length: 345 mm.

Chainstay length: 415 mm.

Seat post length: 370 mm.

Head angle: 68.2 degrees.

Weight: 12 kg.

.. more details.

Rockrider ST 920 24" Kid's Mountain Bike Specification

Bike TypeKids Bikes
Frame Material
Frame Type
Fork Type
Brakes Type
Number of Gears
Wheel Diameter
Designed for
Lowest Price£399.99

Where to buy the B’Twin Rockrider ST 920 24″ Kid’s Alloy Hardtail Mountain Bike?

As far as I'm aware, this B'TWIN Rockrider ST 920 24" Kid's Mountain Bike deal has expired.

You can see if it is back on sale

or if I have any other suitable Kids Bikes.

This B'TWIN deal was originally found at Decathlon, costing £399.99 and was last updated on 10th September 2021.

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Kids Bike Deals

Why not check out some children's bikes deals?

Or view all of my latest kids bikes deals.

Admittedly my website is more geared towards adult sized bikes, as these tend to be the models which are the most popular, and offer you the most savings. Also, often the only reduced kids bikes I see are the cheap and cheerful ones, and I don't want to promote rubbish bikes to my visitors! However if and when I find any discounted kids bikes, then I include them in my kids section. If you can't find a suitable bike there, why not see my Road Bikes and Mountain bikes sections, where you can check out the smaller models which may well fit younger legs.

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Welcome to Bike Bargains - I scour the internet trying to find the best deals specifically for UK based cyclists. Over the years I've saved hundreds of pounds on cycling gear, simply by shopping around and buying cycling consumables only when they're on sale. Whether you're a road cyclist or a DH mountain biker, I handpick the best money saving cycling related bargains I can find - and will hopefully save you money too! If any deals have expired, then please let me know by clicking the Expired button, and I'll then remove them. A full list of expired deals can be found here. Bike Bargains is a participant in the Amazon EU Associates Programme, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.co.uk. All details are believed to be correct, but please check with the retailer prior to buying - deals and specifications change, and your contract is solely with the retailer. Here is my Privacy Policy.

Thanks in advance, and Happy Shopping!

Hope this helps to save you some money!

Claire x