We have plenty of options to choose from, including bikes with training wheels, foot (coaster) brakes and single or low speed internal gears for beginner riders, to bikes using hand brakes and 7 speed external gears for more experienced riders.
We’ve been helping out Melbourne families in finding the right 20 inch kids bikes for over 40 years. Cycling is for everyone, and our team takes pride in giving out friendly, knowledgeable support so your child leaves with a bike that they're sure to love.
Benefits of a 20-Inch Wheel Bike
A 20-inch wheel bike comes with a whole host of advantages over smaller sizes. Larger wheels cover more distance per pedal stroke meaning kids ride further with less effort. They also hold momentum better to make riding a little smoother and less tiring.
The bigger wheel size gives greater control and reduces wobbling, giving young riders more predictable steering and better control as they gain confidence. Many 20-inch bikes also introduce simple gearing, making it easier to tackle hills and start from a stop.
The slightly larger frame creates a comfortable, upright riding position that improves balance and visibility. This makes the 20-inch category ideal for children who are ready for longer rides and more independence.
If your child is approaching the next stage, check out our 20 inch kids bike range or the 24 inch kids and mountain bike range.
A Look at the Features
20-inch bikes come in plenty of styles and builds. We take families through all the key features, so getting your hands on the right 20" kids bike becomes quick and simple, every single time.
Frame Materials
Aluminium frames keep the bike light and easy to handle, whereas steel frames are better for durability at a lower cost, though they do add more weight.
Weight
Weight changes how easily a child can lift, start, and control the bike. Lighter models are a better fit for younger or less confident riders, whereas something sturdier suits kids exploring parks and trails.
Gear Types
Single-speed bikes make for simple operation with one gear and internal 3-speed bikes come with enclosed, low-maintenance gearing. Then there are multi-speed bikes that come with 6–8 gears for hills, speed, and improved control.
Brake Types
20-inch bikes may include hand brakes only, or a hand brake and coaster brake combinations.
An In-Depth Look at Gearing
Single-Speed 20-Inch Bikes
Single-speed 20-inch bikes use one gear and come with a front hand brake and a rear foot brake. They include two main styles: slightly larger BMX-inspired frames and lightweight options like the ByK E450, which feature lower frames and bars for all round better handling.
The ByK range also adds a rear hand brake, with the aim being to help kids learn early braking skills. If you need training wheels, single-speed bikes are the only 20-inch models that will usually support them; provided the axle is long enough of course.
Multi-Speed 20-Inch Bikes
Multi-speed 20-inch bikes come fitted with 6 or more gears and rely entirely on front and rear hand brakes, with no foot brake. They use what’s called a freewheel system, meaning the pedals spin backwards freely.
They typically don’t work with training wheels, but they are popular because kids adapt quickly to using gears and hand brakes.
Getting to Grips With 20-Inch Bike Sizing
20-inch or 50cm bikes are officially sized using their wheel size. However, sizing a new 20-inch bike also depends on the frame size. What makes it hard is frame sizes are not well (if at all) advertised. Luckily we know a thing or two when it comes to this and from our experience, these 20-inch bikes have larger frames:
Than these bikes:
Caring for Your 20-Inch Bike
Good maintenance keeps your 20" kids bike safe and smooth to ride, wherever the road or trail takes them
- Check over tyre pressure regularly for easier rolling.
- Inspect the brakes to ensure reliable stopping.
- Clean up the bike after dusty or muddy rides.
- Lubricate the chain occasionally to minimise wear.
For tune-ups, adjustments, or yearly servicing, our workshops in Heidelberg Heights, Hallam, and Hoppers Crossing are ready to help.
Add On Any Extra Accessories
Most models work with common add-ons such as baskets and kickstands. Training wheels fit only certain single-speed bikes with the correct axle design, but our team can confirm compatibility.
Come and Visit Our Melbourne Stores
Pop into any of our three locations across Melbourne and receive sizing advice, fittings, and test rides so your child can choose a bike that feels comfortable and confident.
- Heidelberg Heights: Heidelberg, Ivanhoe, Preston, Northcote, and surrounding northern suburbs. Easy parking and a full range of 20 inch bikes on display.
- Hoppers Crossing: Convenient for Werribee, Point Cook, Altona, and western Melbourne families. Large showroom with all major 20 inch bike brands available to view and test.
- Hallam: Ideal location for Dandenong, Berwick, Cranbourne, and southeastern suburbs. Expert sizing and comprehensive 20 inch bike selection.
A test ride allows your child to feel the difference between models, with a team that’s ready and waiting to recommend something that’s perfect for the way they ride.
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