Woom GO 4 20" Kids Bike
- Lightweight AA 6061 aluminium frame
- 7-speed drivetrain with child-friendly gear display
- Child-specific mini V-brakes
Finance Available*.
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The Woom GO 4 20" Kids Bike is a superlight geared bike for children aged 6 and up. It pairs a low 20" frame with seven smooth gears, BMX-style bars, and child-specific controls. The result is a bike that helps young riders handle longer rides, hills, and daily routes with more control and less effort.
Key Features and Benefits:
- Seven-speed drivetrain with child-friendly gear display: The microSHIFT twist shifter and clear gear indicator help children see which gear they are using, so they can match their pedalling effort to flat roads, climbs, and descents.
- Lightweight AA 6061 aluminium frame: The butted aluminium tubes keep the bike weight low while giving the frame strong support, so children can start, steer, and stop the bike with less strain.
- BMX-style high-rise handlebars: The wide aluminium bars give young riders a stable hand position and more steering control, while the high-rise shape allows a better fit as the child grows.
- Low entry frame and forgiving front geometry: The low riding position helps children get on and off with ease, while the balanced front end gives steady handling and better control at slower speeds.
- Child-specific mini V-brakes: The two independent brakes use small ergonomic levers and low-friction Jagwire cables, so children can brake with less hand force and gain more control.
- Schwalbe Little Joe 20 x 1.4" tyres: The lightweight tyres have low rolling resistance to reduce effort, while reflective side stripes improve side visibility in low light.
The Woom GO 4 is built for children who are ready to ride further and handle changing terrain. Its seven gears make climbs easier and help control speed on faster sections. The light frame, slim grips, small brake levers, and quick-release seatpost clamp all support a better fit and easier use. This gives young riders a bike that feels natural to control as their skills grow.
Choose the Woom GO 4 20" Kids Bike for a light, geared kids’ bike that makes longer rides, hills, and everyday cycling easier to manage.
Size Guide:
- Age: 6–8 years
- Height: 115-130cm (45 - 51in)
| Frame | Lightweight, high-quality AA 6061 aluminum with butted tubes |
| 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 | |
| Spokes | 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 |
| Stem | Superlight stem made out of forged aluminum 40 mm/+15° |
| Recessed clamp bolts and sleek, rounded design making the stem extremely knee-friendly | |
| 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 |
| Super narrow diameter grip, suitable even for very small hands Width: 560 mm | |
| Seatpost | Anodized aluminum seatpost with visible minimum insertion mark |
| Grips | Ergonomic design Ultra slim, child-specific diameter to ensure good grip |
| Seatpost clamp | Made of aluminum Long quick-release lever, easy to operate requiring only minimal strength |
| Drivetrain | Lightweight, forged 110 mm aluminum cranks with narrow tread (Q-factor) Narrow-wide chainring with 28 teeth |
| Cassette | 11–28 teeth |
| 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 |
| Weight | 7.8 kg (without pedals) |
| Weight limit | 70 kg |
| Colour | Metallic Blue, Metallic Turquoise, Powder pink, Vibrant Yellow, Woom Red |
| Brand | Woom |
| MPN(s) | 100879-0000-1002, 100879-0000-2008, 100879-0000-3010, 100879-0000-4009, 100879-0000-5007 |
Our Payment Options
Online we currently accept payment from the methods listed above including a wide range of finance options. In store we also accept payment in the form of cash and gift vouchers.
Finance Options
In order to get the kit you want, when you need it, we offer a highly flexible range of finance options to help you get the best products on your bike now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.
D.T.(Automotives) Limited T/A Tweeks Cycles is authorised and regulated by the Financial Conduct Authority and is the broker and not the lender. Our FCA registration number is 689896. D.T.(Automotives) Limited offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance, Klarna and Clearpay. Credit is provided subject to affordability, age and status. Minimum spend applies. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority. Klarna is unregulated credit. Clearpay is unregulated credit, use responsibly, T&Cs & late fees apply.
Our Finance Providers
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D.T.(Automotives)Limited trading as Tweeks Cycles offer interest free and interest-bearing credit on purchases £300 and over which is provided by V12 Retail Finance.
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We also offer Klarna, pay now, pay in 30 days or pay in 3 equal instalments.
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We also offer Clearpay pay in 4 instalments.
UK Mainland Delivery Prices
| Delivery Type | Cost | Estimated Delivery Time |
| Standard Delivery for orders under £49.99 | from £1.33 | 2-3 working days from day of despatch(Excludes weekends and Bank Holidays) |
| Standard Delivery for orders over £49.99 | Free | |
| Bike Delivery | Free | 3-5 working days from day of despatch *(Excludes weekends and Bank Holidays) |
| Express Delivery | from £1.68 | 1-2 working days from day of despatch(Excludes weekends and Bank Holidays) |
| Special Delivery | from £12.54 | For any next working day delivery order before 4.30pm Monday to Thursday. For any weekend delivery order before 4.30pm Friday |
* Bike Delivery Info
A bike has to go though a Pre Delivery Inspection (PDI Check) prior to despatch, ensuring the bike is thoroughly checked and set up prior to you receiving. This also means an express delivery service is unavailable. We strive to despatch bikes within 3-5 working days. Please note this may change over school holidays and the festive season (November/December). For more information on the process please visit our pre-build page.
For international shipping please visit our delivery page.
For information about returning an item please visit our returns page.