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20 Inch Kids Bikes (Ages 6-8)

(58 products)

Our range of 20 inch (or 50cm) kids bikes suit school-age children between 110-130cm tall, and all experience levels from beginners to experienced riders.

We have many 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.

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Important note on 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.

From our experience we know that these 20-inch bikes have larger frames:

Than these bikes:

What this means:

Taller riders will get more growth range out of the larger frame than the smaller one.

In reverse, smaller riders will be more comfortable riding a bike that is shorter in the reach and lower to the ground.

Single-speed 20-inch bikes

These bikes have 1 gear. They also have a front hand-brake and rear foot-brake.

Within the single-speed type, there's 2 styles:

BMX style 20-inch bikes are (slightly) bigger than average.

Then there's the Lightweight options from ByK's E450 range.

These bikes have a lower frame and lower bars and are easily one of the lightest in our range.

Not only do they have a front hand-brake and rear foot-brake, ByK builds the E450s with a rear hand-brake as well.

Having this extra brake helps kids develop the skill of using their left hand to brake at an earlier age.

Note:

If you need training wheels, this is the only type of 20-inch bike (that is, single speed) option that will work. And only if the axle is long enough (most are).

3-Speed 20-inch Bikes: A Simple Introduction to Gears

3-speed bikes offer an easy transition into geared riding. Like single-speed bikes, these 20-inch models feature a front hand brake and a rear foot brake—but with the added benefit of three gears.

  • Gear 1: Helps with uphill riding.
  • Gear 2: Ideal for cruising on flat terrain.
  • Gear 3: Provides extra speed on downhill slopes.

These bikes are simple to use; kids don’t need to pedal forward to shift gears, making riding more intuitive and less demanding on co-ordination.

Another big advantage:

The gears are fully enclosed within the rear hub. This sealed design keeps out water, dust, and mud, meaning less maintenance and more worry-free riding.

Examples of 3-speed 20-inch bikes are:

Multi-Speed 20-inch Bikes: More Gears, More Control

Multi-speed bikes use at least 6 gears.

These bikes do not have a foot-brake. Only front and back hand-brakes.

The pedals spin backwards (called a freewheel).

And most don't work with training wheels.

So, these bikes are a little more complex than the other 2 options.

But:

They are also the most popular type of bike we sell.

Kids are like sponges.

They adapt and learn so quickly in the shop.

Once we teach them how the gears and brakes work, they are fine.

Some advantages:

You can place the pedals in any position to make it easier to start, turn, and balance. This is not easy to do when there's a foot brake.

Gears make it easier to take off from a stop. And tackle hills (perfect if you live in an elevated area).

Kids learn how to use their hands to slow down. Hand brakes allow kids to have better control slowing down.

Plus, all future bikes they're going to ride will have hand brakes, so it's good to get kids exposed to them early.

  • Giant Talon 20
  • Mongoose Rockadile 20 Girls / Mongoose Rockadile 20 Boys

Expert 20 Inch Bike Sizing at Our Melbourne Stores

Our experienced staff will help your young rider get sized properly for the best 20 inch kids bike that will suit them.

After all, kids come in different shapes and sizes. And so do our bikes. There'll be some that fit really well and otherwise that might miss the mark.

Our aim is always for long term growth in the bike but not at expense of confidence. That's because kids who are confident riding their bike, ride for longer and become better riders.

Visit Our Melbourne Stores

With 3 convenient locations across Melbourne, we make it easy for families to find the perfect 20 inch bike for their child.

Our expert staff at each store can help with bike fitting, sizing advice, and let your child test ride before you buy.

Heidelberg Heights - Serving Melbourne's North

Perfect for families in Heidelberg, Ivanhoe, Preston, Northcote, and surrounding northern suburbs. Easy parking and a full range of 20 inch bikes on display.

Hoppers Crossing - Serving Melbourne's West

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 - Serving Melbourne's Southeast

Ideal location for Dandenong, Berwick, Cranbourne, and southeastern suburbs. Expert sizing and comprehensive 20 inch bike selection.

Why visit in-store?

Unlike buying online, visiting our stores means your child can test ride different 20 inch bikes to find the perfect fit.

Our experienced staff will ensure proper sizing and comfort - because the right bike makes all the difference.

22-Inch Kids Bikes - The Next Size Up

22-inch bikes bridge the gap between 20-inch and 24-inch bikes, perfect for children who've outgrown their 20" bike but aren't quite ready for a full 24" model.

ByK is the only brand that does this size. Any model that is the ByK E450 MTB as well as the newest ByK E-4 will be a 22 inch kids bike.

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