Best Kids BMX Bikes In Australia (2023 Buyers Guide)

If your child is keen on stunt cycling, you need the best kids’ BMX bikes in Australia! There’s nothing more fun or cool than riding a BMX bike!

However, it can take time to purchase if you’re looking for amazing BMX bikes for girls or boys. We’re bringing you our top buyer’s guide for this year. Read on and discover everything you need to know about buying kids’ BMX racing bikes.

Best Overall

2022 Polygon Razor BMX Bike

If you’re looking for great overall performance and good value for money, the Polygon Razor is ideal. However, its alloy frame is lightweight, while its quality components make it a high-performing choice.

Find The Best BMX Kids Bike For 2023 – Read Our Reviews Of The Best Kids BMX Bikes For Sale

Image Name Features
Best Overall Best Overall 2022 Polygon Razor BMX Bike 2022 Polygon Razor BMX Bike
  • Alloy V brake
  • Frame – Alloy
  • Tyres – 20”
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Best On A Budget Best On A Budget Mongoose Legion Sidewalk BMX Bike Mongoose Legion Sidewalk BMX Bike
  • Weight – 12kg
  • Frame – Hi Ten Steel
  • Tyres – 18”
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Best for Performance Best for Performance Cult Juvi 18” BMX Bike Cult Juvi 18” BMX Bike
  • Weight – 43kg
  • Frame – Aluminium
  • Tyres – 18”
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Are you ready to find the best-rated product for kids’ BMX bikes? Then read our top 3 reviews.

Knowing about 16 Inch BMX Bike Australia is good if your kid is 4 to 7 years old.

1. 2022 Polygon Razor BMX Bike – Best Overall


  • Alloy V brake

  • Frame – Alloy
  • Handlebars – W:710 MM R:230 MM
  • Tires – 20″

If you’re looking for top-notch performance and good value for money, the Polygon Razor is ideal. However, its alloy frame is lightweight, while its quality components make it a high-performing choice.

Its alloy tubing is box-shaped and hydroformed, making it surprisingly lightweight without compromising on strength. It also boosts the stiffness, ensuring the bike launches forwards under power.

The lightweight, narrow rims and tires are designed for speed, making the Razor the perfect choice for racing. Its 44-tooth upfront chainring and 16t at the back also help to ensure maximum speed.

The alloy V brakes are powerful but light. It allows for optimal braking power and reliability for your child’s safety.

With double-wall alloy rims, the Razor can easily accommodate stunts and jumps and is built for long-lasting and amazing performance.

It can be a choice if you need a great value, overall high-performing BMX bike for your child.

2. Mongoose Legion Sidewalk BMX Bike – Best On A Budget


  • Weight – 12kg

  • Frame – Hi Ten Steel
  • Rider height – 3’8” – 4’8”
  • Tyres – 18”

If you’re looking for cheap BMX bikes for kids, the Mongoose Legion Sidewalk is ideal. It is a great value and amazing option for boys or girls between 3’8″ and 4’8″ in height.

Offering the same high performance as a standard 20″ BMX bike, this durable bike model comes with a Hi-Ten steel frame. It ensures it is robust enough to cope with amazing tricks and stunts.

The top tube length is 16.9″ – perfect for smaller children. Meanwhile, the wheelset includes 18″ 2.3″ tires on single-wall aluminum 28H rims. These tires are easy to manoeuvre while also having excellent traction.

The u-brake is made from aluminium for optimal precision speed control, and young riders must ensure their safety.

The Hi-Ten steel fork and handlebar are joined at a 40mm stem, and the headset is threadless, integrated and sealed, ensuring optimal steering performance.

It is ideal if you need an affordable BMX bike for a child just starting with riding.

3. Cult Juvi 18” BMX Bike – Best For Performance


  • Weight – 43kg

  • Frame – Aluminium
  • Handlebars – 8”rise 24” wide
  • Tyres – 18”

If you’re looking for a high-performing BMX bike for your child, the Cult Juvi is an excellent option. This range of amazing bikes has been around for over a decade and has proven itself in the field.

A perfect bike for kids who want a top-performing bike, this model won’t disappoint. Its lightweight aluminium frame is easy to handle, allowing for stunts and jumps to be carried out. Meanwhile, the sealed mid-bottom bracket and cassette hubs are also amazing features. They ensure this bike is built to last and stand the test of time.

All of this bike’s components are solid and of the highest quality. The Cult X Vans tires and Chromoly cranks are of the best standard. It ensures the very best performance.

If your child is ready for their first expert-level BMX bike, this is the model for you.

The Verdict: Which Girls Or Boys BMX Bike Do We Recommend?

Although all three kids’ BMXs we’ve recommended are great, overall, we recommend the Polygon Razor. Durable yet lightweight, affordable yet high-performing, it’s a perfect all-rounder. Both boys and girls will love riding this bike and getting to grips with their first stunts.

young boy jumping from a ramp with his BMX

BMX Bikes For Kids FAQs

The most important thing to consider is where your child will ride their BMX bike. There are several different types of BMX bikes (1) for kids.

Road – these BMX bikes are strong enough to stand up to being ridden on tarmac and cement. They may be heavy, but they’re durable and solid.

Indoor bike parks – lots of kids like to practice in indoor bike parks. If your child mostly rides indoors, they’ll need a lighter bike. It ensures they have enough air to do all those stunts. Slimmer tyres are also a good idea as there are no worries about traction.

Flatland – no-tangle brakes and front and back pegs are essential on flatland. A back centre that enables rolling in reverse is also key.

Soil – bikes for earth riding come with bumpy tyres, ensuring safe traction on soil and rough surfaces.

Course – if your child is planning on racing their BMX bike, they need a big chainring. It helps them get up to speed. Tyres capable of gaining traction on tracks are also important, along with lightweight frames and strong brakes.

BMX bike tyres are designed specifically for use on different types of surfaces. So it’s important to pick a bike with tyres that match the terrain your child will have an adventurous ride.

Tyres come in three types:




A smooth tyre will have minimal tracking. Perfect for riding on flat land, these tires are also useful for use in bike parks and on inclines.

A multi-purpose tyre has more tracking but not enough to get in the way. This type of tyre is great for use on varying surfaces. It’s also perfect for road or park riding.

An uneven tyre is thick with deep notches, allowing traction to be gained in soil and on trails.

BMX bike tyres have several thicknesses, usually between 1.5″ and 2.5″. A slimmer tyre will typically be faster, while a thicker tyre will give stronger traction.

Pneumatic tension is also important. If your child is doing stunts on a hard surface, the tyre must be around 40-70psi (pounds per square inch(2)). A harder tyre with a 90psi or higher will be best for higher speeds.

A boys’ BMX bike will be similar to an adult BMX bike but will often be smaller. Standard 21″ tubes are often too long for children, which means your child will need a smaller frame. The wheels, though, will be roughly the same size except for the youngest boys, where the wheels are 16-18″.

Smaller handlebar grips are necessary so boys can get a good grip. Ribbed surfaces are essential to prevent slippage during jumps and stunts.

A steel alloy or aluminium frame is often best for boys, giving enough support and being relatively lightweight regardless of which surface they ride on.

Appearance may also be an issue, as some boys’ BMX bikes look much cooler than others! So make sure, though, that you purchase a bike for your child with the right balance of function and form.

There are very few differences between girls’ and boys’ BMX bikes. Often, girls are shorter, so they need a lower standover height and a lighter model. Aluminium frames are best for girls as they are light enough to allow girls to do tricks and stunts easily.

The tyres must be big enough to have sufficient traction on surfaces but need to be small enough to manoeuvre, which may mean that smaller tyres are required for girls, especially younger ones.

Some BMX bikes come in traditionally “girly” colours. It may or may not be important to your daughter. For example, a traditionally “boy-coloured” bike will serve just as well as the frame and wheels are the right sizes.

  1. SkateboardersHQ – Different Types Of BMX And Making The Right Choice – Retrieved from
  2. Wikipedia – Pound Per Square Inch – retrieved from

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