Rockrider ST 900 Kids' 20-Inch 6-9 Years Mountain Bike - Red

€ 250.00
SKU: S300772 / 2391222 / 8405038
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    Size : 20"
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Delivery in 2-5 working days
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Delivery in 7 to 10 working days
Product benefits
  1. Ease of use
    ALU frame and chainset for less weight. Grip shifter for the 6 speeds.
  2. Brake control
    Front cable disc brakes: powerful braking in all conditions.
  3. Efficiency
    Suspension fork. Skinwall tyres for less weight, with side knobs.
  4. Cycling comfort
    Sport saddle combined with an aluminium seat post for added comfort.
Product feature
  1. Frame designed for mountain biking
    Our engineers have designed a new aluminium frame. Durable, lightweight and responsive: designed for tackling any obstacles when out mountain biking.
  2. Controlled braking
    Effective braking thanks to the cable-activated disc brake at the front and a V-brake at the rear. The disc brake acts on the wheel axle to deliver powerful braking under any conditions (dry, wet, muddy, etc.). The V-brake is composed of 2 levers equipped with pads that exercise more or less pressure on the rim to slow or stop the rotation of the wheels.
  3. Front suspension to cushion unpredictable terrain
    Take on new challenging terrain (roots, stones, gravel, etc.) with ease thanks to the travel of the front suspension fork.
  4. 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!
  5. 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.
  6. A reinforced, ergonomic saddle
    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.
  7. Riding position
    We equipped this mountain bike with a short aluminium stem (60 mm handlebar) and an oversized 520 mm handle for more controlled steering. This gives you greater accuracy and more responsiveness in the turns.
  8. Aluminium chainset
    The new aluminium chainset has a 140 mm crank that is designed for a child's leg length. This lightweight chainset allows you to start pedalling more easily. The double chain guard prevents the chain from derailing.
  9. 20" wheels and MTB SkinWall tyres
    The tyres are designed for mountain biking. The lateral lugs provide good grip on turns. The tyres use SkinWall technology. This process makes it possible to reduce their weight, provide greater flexibility, therefore increasing their performance, grip and comfort. The recommended tyre pressure is displayed on the tyre sidewall (between 2 and 3.5 bar). 20-inch 1.7"-2.2" wide inner tube with Schrader valve.
  10. Bike accessories
    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:
  11. Dimensions of the bike ready to use
    Length: 140cm. Height: 80cm. Width: 54cm.
  12. What if I order online?
    For smoother shipping, our bikes come with their pedals removed and the handlebar unscrewed (instructions and tools are supplied)
  13. Frame dimensions
    Top tube length: 433.4 mm Seat tube length: 285 mm Chainstay length: 360 mm Seat post length: 300 mm Head angle: 69°
Product testing
  1. Composition
    Frame : 100.0% Aluminium
  2. Storage 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.
  3. Product restrictions
    Wear a cycling helmet while riding. Max user weight: 80 kg
  4. Product information
    To ensure riders can easily overcome rough terrain, we've equipped this 20-inch MTB with a suspension fork. Easily overcome hilly paths with the 6 speeds.