Children's mountain bike 20" WOOM 4 OFF - black

The sophisticated Woom 4 OFF bike model is precisely adapted to the conditions of rough terrain and the needs of adventurous children. High-quality off-road tires, hydraulic brakes and playful geometry create the perfect mix for exploring fun off-road flow. The bike is equipped with powerful hydraulic brakes and Schwalbe tires that can handle even the most demanding terrain. The 9-speed Sram X5 derailleur provides easy and smooth shifting. More

21 490 Kč
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  • Delivery from 250 Kč.
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Basic informations

Category Bikes 20 - children 6-9 years old
Determination children's
Brand WOOM
Catalog number WOOM-W4OFF

Technical parameters

Gender boys', girls'
Child's age 6-9
Color black
Frame color black
Wheel size uni
Wheel diameter 20
Construction Without suspension
Season 2026
Wear and tear new
Model series Woom OFF
Advanced state of rider Recreational
Frame material aluminum
Brakes disc brakes
Speeds/Gears 1x9
Weight 7.8 kg
Carrying capacity 80 kg
Handlebar height 770 mm
Handlebar width 580 mm
Saddle height 580-730 mm
Frame Lightweight aluminum Woom frame made of noble tubes, geometry suitable for small children, easy to get on and great control, thru axles
Fork Lightweight carbon fork that better absorbs shocks, solid axle, neck diameter 1-1/8"
Front wheel Superlight woom OFF DISCO TEC double-chamber aluminum rims
Rear wheel Superlight woom OFF DISCO TEC double-chamber aluminum rims
Front tyre casing 20 x 2.25″ Schwalbe Rocket Ron with ADDIX SPEED rubber compound
Back tyre casing 20 x 2.25″ Schwalbe Rocket Ron with ADDIX SPEED rubber compound
Cranks Lightweight, no brake, platform pedals, length: 110 mm
Chainring 28 T
Sorting SRAM X5 trigger shifter
Derailleur SRAM X5 rear derailleur
Front brake Hydraulic disc brakes by Promax
Rear brake Hydraulic disc brakes by Promax
Handlebars Light aluminum handlebars with ergonomics for better control, width 580 mm, rise 20 mm
Flu woom Ergogrip
Stem Light aluminum stem, CNC machined, length 50 mm
Seat Ergonomic Woom saddle, which is designed for the needs of the child's pelvis, side protection against rubbing against the wall

Product description

The sophisticated Woom 4 OFF bike model is precisely adapted to the conditions of rough terrain and the needs of adventurous children. High-quality off-road tyres, hydraulic brakes and playful geometry create the perfect mix for exploring fun off-road flow.

The basis of all Woom models is a lightweight aluminum frame with geometry designed with the specific needs of small cyclists in mind. The Woom 4 OFF model is also built on a lightweight aluminum frame with more trail geometry and a more cushioned carbon fork for the best possible trail control, and solid axles have been added to increase the safety and strength of the bike.

The bike is equipped with powerful hydraulic brakes and Schwalbe tires that can handle even the most demanding terrain. The 9-speed Sram X5 derailleur provides easy and smooth shifting.

Woom 4 OFF places great emphasis on the contact point between the child and the bike, the grips, saddle and pedals are ergonomically adapted to the needs of a small cyclist.

Main advantages and parameters:

  • High-quality aluminium frame with trail-ready geometry and a padded fork for best trail handling
  • Carbon fork better dampens vibrations and reduces the weight of the whole bike
  • Fixed axles make it easier to mount the spliced wheels and increase the rigidity of the wheel
  • Suitable for children: 5- 8 years old with a height of 115 - 130 cm.
  • Ideal model for off-road riding on natural or children's trail in a bike park
  • Special lower frame geometry provides better entry and stability
  • Light weight: 7.8 kg
  • 20” wheels
  • Promax rear and front hydraulic brakes
  • Multi-layer paint can withstand most childhood carambolas
  • Quality contact points between child and bike ( saddle, grips )
  • Schwalbe Rocket Ron tires, suitable for demanding off-road use. They provide a high level of stability
  • 9-speed Sram X5 transmission with reliable and smooth operation

Size chart

Size chart

About brand WOOM

The Woom children's bikes from the Austrian manufacturer stand out thanks to their extremely low weight, which is twice as low as the competition. Despite the low weight, the Woom offers a sufficiently robust and solid design that can withstand even the biggest of crashes.

More from brand WOOM
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