How to buy your child a new (or newish) mountain bike.

Having taught thousands of kids over the past decade, we’ve seen first-hand how the right mountain bike can make a significant difference in a child’s riding experience. It can either fast-track their skills or hold them back. But don’t worry - you don't need to break the bank. You just need to make a smart, well-informed choice that suits your child’s size, ability, and goals.

Choosing the Right Mountain Bike for Your Child

Below, we’ve answered some of the most common questions parents ask us:

Hardtail or Dual Suspension Bike?

In most cases, kids under around 14 are better off riding a hardtail bike (a bike with front suspension only). The main reason? Weight. A dual suspension bike can be 2 to 4 kg heavier than a similar-spec hardtail. For a child who weighs just 30-45 kg, that’s a significant challenge for their growing legs to push uphill or around the trails.

Although the idea of a flashy dual suspension bike might seem exciting, they can feel sluggish and slow to get going—especially for smaller riders.

For confident and more advanced kids, there’s a sub-category called “hardcore hardtails.” These bikes feature longer travel forks, slacker or "enduro-style" geometry, and chunkier tyres. They are great for kids who enjoy riding fast and downhill.

What Frame Size?

We understand that kids grow fast, and bikes can be expensive. However, buying a bike that’s a size or two too big "so they can grow into it” can really hold your child back. This often leads to poor bike control, a lack of confidence, and ultimately less enjoyment on the trails.

If a salesperson suggests this tactic, they might just be trying to offload what’s in stock. Instead, aim for the right fit now. This approach will help your child build skills and enjoy riding much more.

To keep up with growth without constantly buying new bikes, keep an eye on the second-hand market.

If your child looks stretched out like this on their bike, it's too big!

What Wheel Size?

Just like frame size, wheel size should match your child’s height and strength. Bigger isn’t always better, especially with wheels like 29ers. Larger wheels have more rotational mass, which means they require more effort to get moving. For kids, this can make the bike feel slow and tiring to ride.

As 26” wheels become more rare, moving from a 24” to a 27.5” (650B) can be a significant jump. Some brands now produce frames that accept both 26” and 27.5” wheels, allowing for easier progression as your child grows.

The key takeaway is that you should only go bigger when your child has the strength and fitness to handle it.

Second Hand or New?

As of early 2025, it’s a great time to buy a bike. Demand in the bike industry is slow, and the second-hand market is packed with options.

Buying new offers peace of mind. You get a warranty, after-sales support, and the chance to negotiate. Bike shops are more open to deals right now, so don’t hesitate to ask for extras like accessories or a free service package.

Opting for second-hand is also a solid choice, but it requires a bit more knowledge. If you're unsure about sizing, look up a size chart specific to the make, model, and year of the bike. These are often available on manufacturer websites or forums. If you're not confident about assessing a used bike’s condition or components, call in a favor from your bike-nerdiest friend. Most riders love sharing their knowledge and will gladly help you spot a good deal.

Safety First

When buying a bike for your child, safety should be a top priority. Ensure that the bike has an appropriate braking system. Disc brakes are becoming common and offer better stopping power, especially in wet conditions.

Always invest in a good quality helmet. Make sure it's the right size and fits snugly on your child's head. Encourage your child to wear protective gear, including knee and elbow pads, especially when they are just starting out or riding in rough terrain.

The Importance of Maintenance

Maintenance is crucial for any bicycle. Regular check-ups will ensure that the bike operates smoothly. Teach your child how to clean and maintain their bike. This can be a fun activity to do together and will instill a sense of responsibility in them.

If you buy second-hand, check for any wear and tear. Look for any loose bolts, worn-out tires, or issues with brakes. A well-maintained bike will not only perform better but also last longer.

Other Questions?

We're always here to help. At Chocolate Foot, our goal is to get more kids out on bikes and having fun. If you’ve got questions, send them our way—we’ll do our best to point you in the right direction.

Remember, choosing the right mountain bike is essential for your child's development and enjoyment. Take your time to consider their specific needs. A bike that fits well and is suitable for their riding style can lead to a love of cycling that lasts a lifetime.