Woom 4

 519,00 529,00 incl. VAT

The super-light and innovative all-round 20-inch children's bike for children aged six and over with an adjustable Vario stem and 7-speed gears.


Shift up a gear

With the woom 4, children come into contact with shifting for the first time at the age of six and drive really dynamically. The 7-speed gearbox with an easy-to-operate rotary shifter expands the range of uses of the bike and increases mobility: whether in the forest or up the hill - the kids can now easily go on longer exploratory trips and enjoy the newly won freedom.

woom frame

The super-light aluminum frame is the heart of the bike and ensures carefree riding fun. The elaborately developed, age-appropriate geometry enables good control over the bike and thus safe exploration of new horizons.


The two V-brakes can be easily operated by small children's hands thanks to ergonomically adapted brake levers with reach adjustment. A safe stop is possible even with little manual force.

woom Vario stem

With the flexible Vario stem, the bike can be individually adjusted not only in height but also in length. The bike grows with your child and offers him an optimal sitting position over the entire period of use.

Please note: As we work with different suppliers, the stem of the delivered woom bike may look slightly different than shown here.

woom crank

The length and pedal distance of the high-quality woom crank are ergonomically perfectly adapted to the child's body. For optimal leg spacing and a completely natural movement. And thanks to the chain protection ring, pinched trouser legs no longer stand a chance!

rotary shifter

The easy-to-use microSHIFT rotary shifter ensures intuitive shifting of the seven gears with minimal manual effort.

quick release

The quick release at the front ensures quick and easy removal and installation of the front wheel, making it easy to transport the bike in the car.

woom saddle

One of the most important contact points between child and bike is the saddle. It has a decisive influence on the feeling when cycling. Our saddle is therefore perfectly adapted to the anatomy of the child's pelvic bone. For a uniquely good driving experience.

Please note: As we work with different suppliers, the saddle of the delivered woom bike may look slightly different than shown here.

Saddle quick release

With the saddle quick release, the optimal seat height can be set quickly, easily and even by children's hands - and without any tools! On the pedals, get set, go!

woom low-friction tires

Tires have a major impact on driving behavior. That's why we chose the tires on our bikes for the widest possible range of uses. Whether on the road, gravel path or forest floor - our lightweight tires ensure optimum grip in all weather conditions and on any surface, straight ahead and in curves.


The precise and smooth shifting increases the driving pleasure and the child's range of motion - without overtaxing it. The microSHIFT rear derailleur has seven gears with a wide gear ratio thanks to 28 teeth at the front and 11 to 28 teeth at the rear.

Additional information

Weight 11 kg
Dimensions 105 × 23 × 60 cm

Rot, Grün, Blau, Lila, Gelb, anniversary red, atomic neon, cosmic blurple

wheel size



6 – 8 years





weight bike




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