Woom GO 4 bicycle

The time has come for your child to get to grips with the gears... yay! Shifting is so smooth on the woom GO 4 that bike life is about to get even better. From now on, you and your child will be able to set off on longer-than-ever expeditions with uphill or downhill stretches. A whole world full of new and exciting adventures awaits!

Age: 6 – 8 years

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

Innovative frame

The superlight aluminum frame is the heart of the bike. Its smart geometry with low entry and upright riding position allows your child to get on, ride and get off again safely. The long wheelbase and forgiving front-end geometry provide them with stability and guarantee a smooth ride.

Child-specific hand brakes

Your child won't struggle to bring their woom GO 4 to a stop even if their hands aren't very strong. That's down to the high-quality brake cables, the ergonomic brake levers and the small (but mighty) barrel adjuster that you can use to set the right distance between the brake lever and the handlebar grip for your child.

Protective handlebar grips

Our high-quality handlebar grips have a narrow diameter and an ergonomic design so your child can comfortably hold on with a good grip. The special material and extra large outer diameter keep your child safe, reducing the risk of them getting injured if they do happen to fall.

Ergonomic cranks

The length of the high-quality cranks and the distance between the pedals have been perfectly adapted to fit with children's bodies. This results in an optimum stance and natural movements that feel good. And there's no risk of your child getting their trouser leg caught thanks to the chainguard ring.

Intuitive twist shifter

Your child will get to grips with the gears in no time thanks to the easy-to-use twist shifter and the child-friendly gear indicator. They can shift to the next highest gear by twisting the shifter forward. And the little rider on the gear indicator will move toward the hare to show that your child is going faster. A twist back will shift the gear down again and the little rider will move toward the tortoise to show that your child is slowing down – perhaps because they're tackling a climb.

Handy quick-release skewer

The quick-release mechanism on the front wheel axle makes fast and easy work of dismounting and mounting the front wheel, so you can transport the woom GO 4 by car with no trouble at all.

Ergonomic saddle

The saddle has a major influence on the feel of the ride. And that's exactly why we carefully designed our saddle to suit the pelvis of children in the relevant age group and unlock ultimate comfort. Seriously – your child's ride couldn't be more comfortable!

Practical quick-release seatpost clamp

The quick-release seatpost clamp gives you – or even your child – a simple, quick and tool-free way to adjust the saddle height with perfect precision. On your pedals, get set, go!

All-round capable tires

Tires have a major influence on how a bike handles. That's why we've chosen tires that can be used on all kinds of terrain for the woom GO 4. Our lightweight tires will ensure maximum grip in any weather and on any surface so your child can confidently cover gravel, tarmac and dirt, riding in a straight line or taking corners along the way.

Bike fit guide on handlebars and seatpost

The ABC markings on the handlebars and seatpost make it easier for you to precisely adjust the woom GO 4 so the bike can grow with your child. Start by moving the saddle up or down so that your child can touch both feet to the floor and pedal comfortably. Match the handlebar marking to the seatpost and your child is good to go. How easy is that?!

Specifications

Frame

Lightweight, high-quality AA 6061 aluminum with butted tubes

20″ wheels

Agile and easy handling: low entry, very low riding position and forgiving front-end geometry resulting in good control and more grins

Gears

7 gears with a child-friendly gear indicator

Twist shifter: microSHIFT Ds45

Rear derailleur: microSHIFT M21SS

Fork

Lightweight aluminum unicrown fork

1″ steerer tube

Generous trail angle for easy, well-balanced handling

Wheels

Ultralight aluminum rims

Lightweight aluminum hubs with sealed bearings

Front: fast installation and removal thanks to quick-release skewer

Rear: installation and removal with 5 mm hex key

20 lightweight, super strong stainless steel spokes, double-crossed spoking

Headset

Fully integrated 1″ headset

Sealed industrial-grade bearings

Integrated Ahead plug

Tires

20 × 1.4″ Schwalbe Little Joe

High-quality, lightweight tires with low rolling resistance for maximum safety with minimum effort

Car-type valves allowing the tires to be pumped up at petrol stations

Reflective stripes for side visibility

Stem

Superlight stem made out of forged aluminum

40 mm/+15°

Recessed clamp bolts and sleek, rounded design making the stem extremely knee-friendly

Handlebars attached to the stem with two 5 mm hexagon socket bolts

Saddle

Ergonomic design

Durable, waterproof and weather-resistant material

Handlebars

Wide, ergonomic and lightweight aluminum bars for more control

BMX style with high rise for maximum adjustability

ABC marking for precise adjustment in relation to the saddle height

Sandblasted and anodized in black

Super narrow diameter grip, suitable even for very small hands

Width: 560 mm

Seatpost

Anodized aluminum seatpost with visible minimum insertion mark

Integrated shim in the seat tube to stop scratching

ABC marking for precise adjustment of the saddle height in relation to the handlebars

Grips

Ergonomic design

Ultra slim, child-specific diameter to ensure good grip

Targeted comfort zone for ultimate hand-to-bar contact

Oversized ends for protection in the event of a crash

Lock-on grips with integrated anti-twist clamp

Seatpost clamp

Made of aluminum

Long quick-release lever, easy to operate requiring only minimal strength

No risk of turning and/or twisting

Drivetrain

Lightweight, forged 110 mm aluminum 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 mini V-brakes requiring minimal strength for maximum braking power

Ergonomic brake levers designed for small hands with short fingers and little strength

High-quality Jagwire Bowden cables with low friction for smooth performance

Included tools

15 mm spanner for pedals

4 mm hex key for stem

Weight

7.8 kg (without pedals)

Weight limit

70 kg