Add the woom GO 4 bike with 20″ wheels and a LEGGIE Kickstand in the right size to your cart in just one click. All you need to do is select the bike in the color of your choice. The kickstand will be included with your order automatically.
Just be aware that the bike and kickstand may arrive in two separate deliveries.
In stock – delivered to you within 4 to 7 working days!
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!
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
Colors
woom red, vibrant yellow, hot pink, metallic turquoise, metallic blue
Weight
7.8 kg (without pedals)
Weight limit
70 kg
Shipping dimensions
107 × 57 × 24 cm
You can set up your bike within 5 minutes. Ready? Let's go!
This video is your guide to assembling the woom GO 4 and making sure it's tip-top for your child, including the tools you need.
All components that have been specifically designed with safety in mind bear the KIDSAFE PLUS seal.
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?!
Our woom bikes don't come with any additional accessories other than the front and rear reflectors. We automatically ship all woom bikes from size 2 and upwards within Italy only with bike lights and a bell to ensure compliance with the law. No further accessories are supplied with bikes in Italy. You can find useful extras, including kickstands and mudguards, in our online shop.
If your child plans on cycling on public roads and streets, their woom bike may need to meet certain standard requirements before it can be considered legal in your country of residence. In many countries, bikes must be equipped with a bike bell, front and rear lights, and wide-angle Z reflectors. As rules for cyclists and their equipment vary from country to country, find out about the regulations applicable to riding a woom bike in road traffic in your country or region, particularly regarding the use of lights, reflectors and other obligatory safety equipment.
Our standard 2-year warranty applies to the frame and components automatically from the day you purchase your woom bike. Members of our woom Riders Club can extend the warranty on aluminum frames, rigid forks, handlebars, stems and cranks to 10 years for free by registering their bike within 9 weeks of buying it.
Click here to find out more about our extended warranty and to read the full terms and conditions.
If you buy a woom product and are not 100% satisfied, or if you didn't order the right size, you have 30 days (WOW 60 days) to send it back to us free of charge from within the EU for a refund.
This also applies to your new woom bike, even if your child has already ridden it.
We will cover the return shipping costs and refund the full amount you originally paid.
Everything you need to know about our cancellation policy can be found here.
Our son got his start on WOOM 3 and now he's enthusiastically using the next generation!
We're happy because he learned it so quickly thanks to WOOM!
Automated AI translation
Great bike, like all WOOM bikes
It is already our third bike, I had a bit of concern about switching to the foursome - because of the gearshift, but like everything with Woom, the child sits on it and drives off. No problem with the circuit at all. Briefly explained and everything was wonderful. That's how it learned to ride a bike right away, even with the first bike. Unpacked, assembled briefly and the next day, the child was able to ride a bicycle.
Unfortunately, there were some problems with the pre-installed front brake this time. It had to be adjusted after the test drive was postponed by one day.
Big and disappointed children's eyes, but the next day after a huge bike ride, everything was fine again.
Automated AI translation
Top quality
For me, quality starts with packaging. There was nothing to complain about here. Everything was neatly and neatly packaged.
The individual parts were easy to assemble. All screws fit perfectly. The bike worked great when assembled.
This is quality that is unfortunately becoming increasingly rare these days.
Automated AI translation
Top Bike
My daughter has been riding Woom bikes right from the start. The Woom Bike 4go is light as a feather and the gearshift is a piece of cake for my daughter!
The bikes are simply great, without question!
Automated AI translation
The Woom 4 is already our third Woom and, as always, we love the bike itself. Unfortunately, this time I had to worry about a detail that didn't have to be the case. All previous wheels came with a high-quality bell (Woom Bing). The accompanying bell is apparently mandatory in Austria. With the current Woom 4, they have decided to save money and include an inferior bell. This is harder to use and sounds really awful. The child also complained immediately. Now I have to order an extra better bell, pay for shipping, wait and throw the enclosed bell in the trash, and that with a bike that costs almost 600 euros. I'm sorry, but it's hard to understand.
Reply fromwoom
Dear Christoph,
Thanks for your honest feedback!
We are very sorry that you did not like the included bell.
We have switched to a different bell here and we can understand that it does not meet your requirements.
Please write to our customer service about this, we are sure to find a good solution for your extra shipping costs here.:)
We are looking forward to your message!
Very best regards
your WOOM team
Automated AI translation
Top like all models
We already had the Woom 2 and Woom 3 with gears. All bikes have been reliable so far and have been used very gladly and extensively.
Automated AI translation
quality
The bike is for the birthday that is in June. I have already assembled the bike. Quality is more than satisfactory.
Automated AI translation
Super lightweight wheels
Starting with Woom 1, our granddaughter never wanted another bike again. (She also had a Puki balance bike at that time.) Then came the Woom 2, which is now being replaced by a Woom 4. Woom makes the best wheels, they are lightweight yet robust.
Automated AI translation
Best bikes
Fast delivery, best quality, kids enjoy to drive
The Best Birthday Gift Ever!
The Best Birthday Gift Ever!
We gave our 6-year-old the woom GO in Pink for her birthday, and it’s been a total game-changer. The vibrant "hot pink" color is stunning and high-visibility, but the real magic is the weight. It’s so lightweight that she can handle it, turn, and restart on hills with total confidence—no more "it's too heavy" frustrations!
Automated AI translation
Simply great
We love Woom bikes for our kids right from the start, the bikes grow with us.
Automated AI translation
Great bike
Very satisfied
Automated AI translation
The brand you trust
My kid loves it!
Good kids bike
Easy assembly, but the front brake grinds and I can't get it so that it fits (tried everything, even with YouTube instructions), I'll have it watched in a bike shop. The bike is OK, a good kids' bike. We also had the WOOM 2 and 3, these two (older) models were of higher quality in my opinion, the WOOM 4 looks cheaper in terms of components, which I find a bit annoying for the generous price.
Automated AI translation
Amazing, high-quality bike!
We are so impressed with the quality of the bike, worth spending a little more. The paint is bright and shiny, but doesn't scuff easily. Our 6 Year Who Was Riding Without Training Wheels Before Took to This Bike Immediatly. He had even more confidence and said it was so easy to ride. The helmet was also amazing, so easy to take on and off by himself and fit perfect. He was able to change the gears easily and the hand brakes fit his hands. I highly recommend WOOM as a company, their customer service is top notch!!
