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Woom Red children's bicycle on a white background
Woom GO 4

Woom GO 4
£385.00

Main specification

  • Derailleur Microshift microSHIFT M21SS
  • Gears 7
  • Drivetrain type Chain
  • Brakes Woom Child-friendly mini V-brake, Rim brake
  • Fork/Shock model Lightweight aluminum unicrown fork
  • Wheel size 20"
  • Weight (kg) 7.8
ColorRed

Woom GO 4 Kids Bike – Lightweight, Confident Riding for Young Explorers

The woom GO 4 is a lightweight 20″ kids bike designed to help children aged 6 and up ride further and with more confidence. With easy-to-use gears and a stable, child-friendly design, it’s perfect for kids who are ready to move beyond their first bike and explore longer rides.

The smooth 7-speed gearing makes climbing hills easier and helps young riders learn how to control their speed on different terrain. Combined with the light frame and comfortable riding position, the GO 4 makes cycling feel natural, fun and full of new possibilities.

Top features: Child-specific shifting, ergonomic saddle, protective handlebar grips, BMX-style bars, handy quick-release skewer

Age: 6 – 8 years

Height: 115 - 130 cm (45 - 51 in)

More gears. More freedom. More adventures.
Child on a Woom bicycle in front of a colourful mural with text
Child riding a Woom blue bicycle on a paved path in a park

Confidence-Building Control

With child-friendly brakes, stable handling and a clever steering limiter, the bike is designed to help young riders stay safe, feel balanced and build confidence every time they ride.
Child with a teal bicycle and helmet standing on a paved area with plants in the background

Superlight and Built to Grow

The lightweight aluminium frame is easy to handle, while the adjustable saddle and handlebars make it simple to achieve the right fit as your child grows.
Children riding Woom bicycles on a street with palm trees and a mural in the background

Comfort That Grows with Your Child

The supportive saddle is designed for young children’s comfort, while the adjustable saddle height means the bike can grow with them. Grippy tyres also help provide a smooth, stable ride on different surfaces, from pavements to park paths.

Detailed information

Category Frame
Frame Lightweight, high-quality AA 6061 aluminum with butted tubes
Frame 20" wheels
Frame Agile and easy handling: low entry, very low riding position and forgiving front-end geometry resulting in good control and more grins
Category Gears
Gears 7 gears with a child-friendly gear indicator
Gears Twist shifter: microSHIFT Ds45
Gears Rear derailleur: microSHIFT M21SS
Category Fork
Fork Lightweight aluminum unicrown fork
Fork 1" steerer tube
Fork Generous trail angle for easy, well-balanced handling
Category Wheels
Wheels Ultralight aluminum rims
Wheels Lightweight aluminum hubs with sealed bearings
Wheels Front: fast installation and removal thanks to quick-release skewer
Wheels Rear: installation and removal with 5 mm hex key
Wheels 20 lightweight, super strong stainless steel spokes, double-crossed spoking
Category Headset
Headset Fully integrated 1" headset
Headset Sealed industrial-grade bearings
Headset Integrated Ahead plug
Category Tires
Tires 20 × 1.4" Schwalbe Little Joe
Tires High-quality, lightweight tires with low rolling resistance for maximum safety with minimum effort
Tires Car-type valves allowing the tires to be pumped up at petrol stations
Tires Reflective stripes for side visibility
Category Stem
Stem Superlight stem made out of forged aluminum
Stem 40 mm/+15°
Stem Recessed clamp bolts and sleek, rounded design making the stem extremely knee-friendly
Stem Handlebars attached to the stem with two 5 mm hexagon socket bolts
Category Saddle
Saddle Ergonomic design
Saddle Durable, waterproof and weather-resistant material
Category Handlebars
Handlebars Wide, ergonomic and lightweight aluminum bars for more control
Handlebars BMX style with high rise for maximum adjustability
Handlebars ABC marking for precise adjustment in relation to the saddle height
Handlebars Sandblasted and anodized in black
Handlebars Super narrow diameter grip, suitable even for very small hands
Handlebars Width: 560 mm
Category Seatpost
Seatpost Anodized aluminum seatpost with visible minimum insertion mark
Seatpost Integrated shim in the seat tube to stop scratching
Seatpost ABC marking for precise adjustment of the saddle height in relation to the handlebars
Category Grips
Grips Ergonomic design
Grips Ultra slim, child-specific diameter to ensure good grip
Grips Targeted comfort zone for ultimate hand-to-bar contact
Grips Oversized ends for protection in the event of a crash
Grips Lock-on grips with integrated anti-twist clamp
Category Seatpost Clamp
Seatpost Clamp Made of aluminum
Seatpost Clamp Long quick-release lever, easy to operate requiring only minimal strength
Seatpost Clamp No risk of turning and/or twisting
Category Drivetrain
Drivetrain Lightweight, forged 110 mm aluminum cranks with narrow tread (Q-factor)
Drivetrain Narrow-wide chainring with 28 teeth
Drivetrain Cassette with 11–28 teeth
Drivetrain Narrow, flat platform plastic pedals
Drivetrain Sealed cartridge
Category Brakes
Brakes Two independently operated mini V-brakes requiring minimal strength for maximum braking power
Brakes Ergonomic brake levers designed for small hands with short fingers and little strength
Brakes High-quality Jagwire Bowden cables with low friction for smooth performance
Category Included Tools
Included Tools 15 mm spanner for pedals
Included Tools 4 mm hex key for stem
Category Colors