Ease of use

Shock absorption

Efficiency

Cycling comfort

Brake control

Length: 168 cm (66 in).
Height: 100 cm (39 in). 
Width: 60 cm (24 in).

Dimensions of the assembled bike

A saddle with a sporty design, carefully designed for kids. Equipped with a plastic cover at the back (a bumper) to protect from impacts.

Reinforced, ergonomic saddle

The single chainring is easy and efficient to use:
1 chainring guard with 34 teeth and 7 speeds (MegaRange 14-34 freewheel). With just 1 shifter on the handlebars, shifting gears is easy. The trigger lets kids shift up and down with just one finger.
The gear ratios make it easier to accelerate on the flat and tackle climbs.

Changing gears: A single chainring like the pros!

This mountain bike has no rear suspension.

It is a semi-stiff mountain bike: perfect for beginners taking their first trail mountain bike rides as a family.
Compared to a full-suspension mountain bike (with rear suspension), the advantages are clear: this mountain bike is lighter! less energy is lost on level ground.

No rear suspension

26 in wheels and mountain bike tires


The special Btwin 26 x 2.00 in tires provide grip and comfort when riding trails.
The recommended tire pressure is shown on the sidewall (between 29 and 43.5 psi)

We have made the front wheel easy to put on and take off so that it’s easy for you to transport this bike. Equipped with a quick-release system.

26 in, 1.7 to 2.2 wide, Schrader valve inner tube

Wheel/tire information

The front suspension helps you easily learn to tackle obstacles on slightly uneven trails.

Front suspension

This mountain bike is equipped with a bell, lights, wheel reflectors, and platform pedals.

The frame is also compatible with other Btwin accessories:
- front and rear fenders
- stand
- bottle cage
- bag

Mountain bike fittings

If you opt for home delivery, this bike will be delivered with the pedals removed and the handlebars unscrewed for the best transport conditions (instructions and tools included).

What if I order online?

With a stem that tilts 15° upward, the riding position of the Rockrider ST 500 26 in Mountain Bike is raised, accessible, and comfortable.
In detail:
- 60-mm aluminum stem with an angle of 15° for maximum comfort
- 580 mm steel handlebars, designed for kids’ shoulder width
- Soft Touch lock-on handlebar grips

Handlebars, stem, grips

Because kids have smaller hands than adults, it’s not always easy for them to reach the brake lever. That’s why we designed brake levers that are close to the handlebars.
The lever is made from aluminum.
The levers are connected to two V-brake pads.
They are composed of 2 calipers that exert pressure on the rim to slow or stop the rotation of the wheels. The pressure depends on how hard you squeeze the brakes.

Controlled braking!

We designed a new aluminum frame for more comfort and less weight. The pronounced slope, combined with 26 in wheels, makes it great for kids from 140 cm to 160 cm (4’7” to 5’3”) tall. The low frame means that young cyclists can easily get on and off their bike.

Frame designed for mountain biking

Go anywhere with less effort! With its bigger wheels, this 26 in mountain bike lets young daredevils (140 cm to 160 cm (4’7” to 5’3” tall) take on more demanding terrain. Because the wheels have a larger diameter, they glide over roots and rocks. On downhill tracks, the frame stays more horizontal, making it easier to steer.
Bigger wheels are also more efficient, because you travel farther with each turn of the pedals!

Why have 26 in wheels?

The new aluminum chainset has a 152-mm crank that is suited to a child’s leg length. This light chainset allows kids to start pedalling more easily. 
The chain’s double guard stops it from jumping.

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btwin

Kids’ Mountain Bike 26 in, EXPL 500 CNFR