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Gear it up!
The woom 4 introduces children aged six years to the world of gear-shifting. The bike's eight speeds in combination with the easy-to-operate twist shifter expand the bike's range of use and increase the child's mobility. Whether they want to ride their bikes into the woods or up hills – the new-found freedom of gears make longer adventures on two wheels child's play.
- Size: 20″
- Weight: 7.7 kg / 16.9 lbs (without pedals)
- Age: 6 – 8 years
- Height: 115 – 130 cm
-
Available editions:
ORIGINAL
- Top Features
Brakes
The two V-Brakes are easy to operate thanks to their ergonomically adapted brake levers with reach adjustability. The levers require only little strength to bring the bike to a safe halt.
All components that have been specifically designed with safety in mind bear the KIDSAFE PLUS seal.
“There is much more to riding a bike than just the fun of taking it for a spin: exploring the world means broadening horizons.”
Christian Bezdeka
Founder of woom
Bike geometry
Tyre/wheel size
20″
Cockpit/handlebar height
770 mm (30.32")
Steering angle
68°
Top tube horizontal
446 mm (17.56")
Wheelbase
825 mm (32.48")
Seat tube angle
71.5°
Minimum saddle height
560 mm (22.05")
Maximum saddle height
710 mm (27.95")
Crank length
110 mm (4.33″)
Handlebar adjustability
individually adjustable
Stand-over height
~ 495 mm
Specifications
Frame
- Frame material: light, high-quality AA 6061 aluminium with butted tubes
- 20″ wheels
- Agile yet easy handling: low entry, very low sitting position and forgiving steering geometry to provide good control and more riding fun
Gears
- 8 speeds
- SRAM X4 twist shifter
- SRAM X4 rear derailleur
Fork
- Light unicrown fork made out of aluminium
- 1″ shaft
- Generous trail angle for easy handling
Wheels
- Ultralight SOOPA DOOPA HOOPS aluminium rims
- Aluminium hubs with sealed bearings and mount for woom click-on fenders
- Quick-release skewers for easy installation and removal
- 20 lightweight, super strong stainless steel spokes, double-crossed spoking
Headset
- Fully-integrated 1″ headset
- Sealed industrial bearings
- Integrated ahead clamp
Tyres
- 20 x 1.4″ Schwalbe Little Joe folding tyres – woom edition
- High-quality, lightweight tyres for good shock absorption, low rolling resistance and maximum grip
- Car-type valves for easy filling at any service station
- Reflective stripes on the sides of the tyres for optimal visibility even in low-light conditions
Stem
- Lightweight stem made out of forged aluminium
- Adjustable height and reach mean the Vario stem offers an optimal riding position as the child grows.
- Handlebars attached via two clamps and fixed with two 5 mm hex bolts
Saddle
- Ergonomically designed to fit children's pelvis
- Non-toxic
- Side protection to lean against walls
Handlebars
- Wide, ergonomically adapted and lightweight aluminium bars for more control
- Sandblasted and black anodised
- Width: 540 mm
Seatpost
- Anodised aluminium seatpost with insertion marks that indicate the minimum insertion depth
Grips
- woom Ergogrip – child-friendly thanks to small diameter
- Ergonomically formed gripping surface, non-toxic
- Handlebar ends with extra large diameter for greater protection
- Screw-in grips for secure attachment to handlebars
Seatpost clamp
- Made from aluminium
- Extra-long quick-release skewer, easy to operate requiring only little strength
- No risk of turning and/or twisting
Drive
- Lightweight, forged 110 mm aluminium cranks with narrow tread (Q-factor)
- Narrow-wide chainring with 28 teeth
- Cassette with 11-28 teeth
- Narrow, flat platform plastic pedals
- Sealed cartridge
Brakes
- Two independently operated V-brakes with braking power adapted for children
- Ergonomically adapted brake lever with reach adjustability
- High-quality Jagwire cables for reduced friction and smooth performance
Enclosed tools
- 15 mm spanner for pedals
- 5 mm hex key for stem
Colours
- woom red, sunny yellow, woom green, sky blue, purple haze
Weight
- 7.7 kg / 16.9 lbs (without pedals)
Weight limit
- 70 kg (155 lbs)
Shipping dimensions
- 104 x 55 x 22 cm
This is how we deliver your bike —
5 min., ready, go!
Questions about assembly or use?
Contact us Assembly instructions pdf, 1MB Instructions for use pdf, 8MBupCYCLING
woom bikes grow with your child
Children grow up fast. Still, we want your child to always have the right size bike – and we think this should be affordable for everyone. That's why we have launched the upCYCLING system.
- Exchange your old woom bike and receive a 40% discount when buying the next size up.
- Lifetime upCYCLING membership (you only pay once).
- The bike must be roadworthy.
- We'll organise return shipping of your old bike at no cost.
Affordable shipping costs
We offer shipping throughout the EU for €10. If you only order accessories, shipping costs €5.
Quick delivery
We ship within 24 hours of payment being received. Shipments in the EU will be delivered to your door within 1-5 working days.
30 day money-back guarantee
Give your child enough time to test the bike. You can return any bike within 30 days and we'll cover all of the shipping costs.
Unpack and setup
With just a few easy steps your bike will be ready to ride. Check out our videos for tips on setting up your bike.
Personal service
We guarantee personal support when you buy a bike – satisfaction guaranteed!
Protecting the environment
We are partners of the Austrian "klimaaktiv mobil" initiative and are committed to protecting the environment and using resources efficiently.