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Lightweight
Purpose built and easy to ride kids bikes.

Monthly direct debit
Commencing one month after your delivery

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Free exchange if it's the wrong size. T&Cs for full info.

2-minute setup
Arrives pre-assembled.
Details
The Woom 4 suits a rider with an inside leg measurement between 52-62cm aged between 5 and 7 years old.
At only 7.7kg it is one of the lightest bikes of this size available.
Recommended for ages 5-7 but measure your child’s inside leg length, since this is a much better indicator of bike size than age.
Tech Spec
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
- 7 speeds
- microSHIFT 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
Weight
- 7.7 kg / 16.9 lbs (without pedals)
-
Details
The Woom 4 suits a rider with an inside leg measurement between 52-62cm aged between 5 and 7 years old.
At only 7.7kg it is one of the lightest bikes of this size available.
Recommended for ages 5-7 but measure your child’s inside leg length, since this is a much better indicator of bike size than age.
-
Tech Spec
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
- 7 speeds
- microSHIFT 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
Weight
- 7.7 kg / 16.9 lbs (without pedals)