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.

B'Twin Bikes

B'Twin are a popular choice of bike in the UK, partly due to their widespread distribution by Decathlon, and partly due to the value they offer. Their bikes are divided into several slightly overlapping ranges, with Triban best known for road and gravel bikes, and Rockrider gaining a reputation for high performing MTBs to suit every budget. Elops largely consist of a range of city bikes, whereas Riverside focus on hybrids. All in all, B'Twin bikes are well worth checking out given the size of their ranges; there's a model to suit most budgets.

Rockrider Mountain Bikes

Rockrider are Decathlon's off-road offerings, comprising of a series of kids bikes and adult hardtails, full suspension steeds and even a handful of high end E-MTBs.

This brand was launched in 2018, when Decathlon decided to split their B'Twin bikes into different genres. In terms of prices, there's something for everyone, with adult's MTBs starting at just over £200 and rising up to high end lightweight race bikes at nearly the £4000 mark.

If you want to ride off-road, and would prefer to buy from Decathlon, then the Rockrider mountain bike range is for you.