B’TWIN 20 Inch Kids Mountain bike Rockrider ST 120 6-9 Years old
1 of 12
B’TWIN 20 Inch Kids Mountain bike Rockrider ST 120 6-9 Years old
1 of 12
- Not published
- £159
- Rigid
- 20″
- Rim brake
Sizes
Size guide- No Size
Components
Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.
Drivetrain
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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.
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Shifters
"Grip shifter",
Brakes
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Brakes
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.
Wheels and tires
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Tires
The tyres are designed for mountain biking. The side 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.
Sizes and geometry
Size explorer
Understanding sizes and measurements
Geometry not published
Specifications
Frame and fork
- Intended fit
-
- Unisex
Suspension
- Suspension configuration
-
- Rigid
Wheels and brakes
- Wheel configuration
-
- Same size
- Brake type
-
- Rim brake
Fit and controls
- Shifting
-
- Mechanical
Additional specifications
- Tire width
-
- 2.2″
- Wheel size
-
- 20″
Lineup changes
The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.
Differences across 2023 builds
Other models in this family
Published versions from the same family and model year.
