The children's bicycle KROSS Level Jr 4.0 is a sturdy and comfortable bike for younger riders, designed for daily riding and active leisure. Its lightweight aluminium construction, suspension, and effective brakes ensure comfort, control, and safety on various surfaces.
Basic data
Frame
Components
Drive
Brakes
Wheels
Additional information
Warnings and producer's data
Children's bike KROSS Level Jr 4.0 orange/green/shine (KRLVJ424X12U007984)
KROSS Level Jr 4.0 Children's Bike in Orange/Green/Gloss is an excellent choice for young cyclists who want to develop their skills on two wheels. Its solid construction, based on a lightweight aluminium frame, ensures durability and ease of handling. Thanks to the use of ALUMINIUM LITE material, the bike is not only robust but also lightweight, making it easier for children to ride and control.
Advanced Technical Solutions
The KROSS Level Jr 4.0 children's bike in orange/green/gloss is equipped with front suspension, which increases riding comfort on uneven surfaces. The RST AERIAL AIR fork effectively absorbs shocks, translating to a smooth ride even in more challenging off-road conditions. This allows young cyclists to enjoy stability and safety while tackling various trails.
Precision and Reliability in Braking
The KROSS Level Jr 4.0 children's bike in orange/green/gloss features Shimano MT200 hydraulic disc brakes, which provide effective braking in all conditions. The 160 mm diameter brake discs on the front and rear axles enhance stopping efficiency. This ensures that young riders can feel confident, knowing they have full control over the bike, regardless of the situation on the road.
Comfort and Ergonomics in Riding
The KROSS Level Jr 4.0 children's bike in orange/green/gloss comes with a SELLE ROYAL EXPLORA JR saddle, which offers comfort even on longer rides. The ergonomic KROSS grips and precise MICROSHIFT ADVENT gear shifters allow for easy and intuitive gear changes. As a result, young cyclists can enjoy a comfortable and smooth ride, no matter the terrain.
KROSS Level Jr 4.0 Children's Bike - Features:
- Lightweight frame made of ALUMINIUM LITE;
- Front suspension providing riding comfort on uneven surfaces;
- RST AERIAL AIR fork absorbing shocks for a smooth ride;
- Shimano MT200 hydraulic disc brakes ensuring effective braking;
- 160 mm diameter brake discs on the front and rear axles;
- SELLE ROYAL EXPLORA JR saddle for comfort during rides;
- Ergonomic KROSS grips for a comfortable hold;
- MICROSHIFT ADVENT shifters enabling precise gear changes;
- Aluminium hubs ensuring durability and lightweight construction;
- SCHWALBE SMART SAM 24X2.1 tires for excellent grip on various surfaces.
Product Details

Depreciation of the front section
The front part of the bicycle has been equipped with a suspension that effectively reduces the feeling of vibrations when riding on bumpy trails. During contact with uneven surfaces, the mechanism dampens shocks, allowing the wheel to adhere better to the ground even on challenging sections. In practice, a young user can more easily navigate stones, roots, or uneven terrain without sudden lifts of the handlebars.

Selle Royal Explora JR saddle
The specially designed SELLE ROYAL EXPLORA JR saddle supports young cyclists during long journeys. The profile tailored to a child's physique helps maintain proper body positioning throughout the ride. Even when covering long distances, the user can count on stable support in every phase of pedalling.

MICROSHIFT ADVENT grips
Precise gear shifting while riding is ensured by the MICROSHIFT ADVENT levers, responding instantly to every hand movement. The mechanism operates smoothly, so changing gears does not require a lot of force even during intense pedalling. When climbing hills or making sudden accelerations, the quick response of the levers allows for smooth adjustment of pace without losing riding continuity.
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Children's bike KROSS Level Jr 4.0 orange/green/shine
Children's bike KROSS Level Jr 4.0 orange/green/shine
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