Best Kids' Mountain Bikes of 2024: Top Choices for All Age Groups

Best Kids’ Mountain Bikes of 2024: For Boys and Girls of All Ages

three kids riding kids mountain bikes
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It wasn’t long ago that kids’ mountain bikes hardly existed. But nowadays, you can find full suspension MTBs, hardtails, 20″ MTB and 26″ MTB for kids with all the quality and features of an adult mountain bike. 

In this article, we’re going to take a closer look at the best kids’ mountain bikes, including 20″ mountain bikes, 24″ mountain bikes, and 26″ mountain bikes for kids.

Today’s mountain bikes for kids are specifically designed for trail riding, hops and jumps, singletrack, and more.

Our list of the best kids mountain bikes will cover MTB designed for kids, adolescents, and teenagers, with a variety of sizes and features to suit any MTB need.

First, we’re going to tell you more about kids’ mountain bikes and what they’re designed for. Next, we’ll run through our list of the best kids’ mountain bikes. At the end of this article, we will help you choose the best size mountain bike for kids.


What Are Kids Mountain Bikes?

When you put them side-by-side, a kids’ mountain bike and an adult mountain bike look nearly identical as long as the sizes match up. Take a 26″ kids mountain bike and an XS adult mountain bike, for example, and you can hardly tell which one is which. But once you take a closer look, there are a number of differences you can spot.

In general, kids’ mountain bikes are easier to ride and less aggressive. They are designed as an introduction to mountain biking, and not necessarily a fully certified shredder.

Mountain bikes for youth are typically lighter than an equivalent adult mountain bike, making them easier to carry and transport. However, this also makes them a bit less durable and confident on rocky trails or technical jumps.

Boys’ mountain bikes and girls’ mountain bikes tend to have a narrower q-factor, which is the horizontal distance between the pedals.

This feature is specifically designed for kids and their unique body shapes, especially those who have yet to go through puberty. A narrower q-factor makes for more efficient pedaling, and it is typically more comfortable for kids than adults.

Most mountain bikes for kids have a 1x drivetrain system, which means there is only one front chain ring. This simplifies the entire riding and shifting experience, though it does limit what you can accomplish on the bike.

Kids mountain bikes have a much harder time on steep or technical trails – though most kids won’t be tackling those trails yet anyway.

We have an entire section dedicated to mountain bike sizing at the end of this article. But for now, all you need to know is that kids’ mountain bikes are sized based on their wheels, whereas adult mountain bikes are sized based on their frame.


Best Mountain Bikes for Kids

Co-op Cycles REV 20

Co-op Cycles REV 20

MSRP: $399

  • Tire size: 20″ tires
  • Suitable for ages 6-10


Co-op Cycles REV Kids Bike is an aluminum kids mountain bike with large tires and powerful disc brakes. It comes with a 6-speed drivetrain that is controlled by a Shimano RevoShift twist shifter specifically designed for kids.

The disc brakes are mechanical, and the tires are extra-wide 2.6″ all-terrain tires from Slant Six Sport. There is no suspension on the Co-op Cycles REV Kids Bike, which helps keep the cost down.

However, it does limit the types of terrain that 6-10 year-olds can tackle on this frame.

See more: Best Kids’ Bikes

Overall, this bike is designed for easy control and comfortable riding, perfect for younger kids who are exploring off-road riding for the first time.

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Cannondale Trail Plus 20

Cannondale Trail Plus 20

MSRP: $430

  • Tires size: 20″
  • Suitable for ages 6-10


Lighter and more capable than the Co-op Cycles REV, the Cannondale Trail Plus 20 is an aluminum mountain bike for kids with plus-size tires for added grip.

There are 7 gears and a microShift rear derailleur that is easy to use, especially for 6-10-year-old kids.

What really stands out is the powerful mechanical Tektro disc brakes. This gives the Cannondale Trail and wider range of off-road capabilities compared to kids’ mountain bikes with rim brakes.

Made of aluminum alloy, the frame is lightweight and durable, and paired with lightweight alloy components which make the Cannondale Trail Plus 20 one of the lightest mountain bikes for kids.

The Cannondale Trail features kids-specific sizing and narrow spacing between the pedals, making for the most comfortable ride.

Even the rider position is optimized for kids, making the introduction to mountain biking easier than ever.

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woom OFF 4

woom OFF 4

MSRP: $799

  • Tire size: 20″
  • Suitable for ages 6-8


woom OFF 4 is designed to be a kid’s first-ever mountain bike, perfect for the pump track or cruises through the forest. The frame is specially designed for easy mounts and dismounts using a low-bend top tube. woom recommends ages 6-8 for the woom OFF 4, but an older child between 46″ and 51″ tall could also fit on this frame.

See more: Full Overview of woom Bikes

While there isn’t suspension on the woom OFF 4, there is a lightweight carbon fork that maximizes stability over all kinds of terrain. Brake levers are specifically designed for kids with a short reach and easy modulation in both dry and wet conditions.

The woom stem is specially designed and made of forged aluminum to maximize stiffness at the front end. You can also flip the stem to alter the handlebar’s position and height. The saddle on the woom OFF 4 is specifically designed for kids and is ideal for comfort.

woom OFF 4 has one of the more impressive drivetrains on a kids’ bike with a 9-speed setup in the SRAM X5 system. The tires are mountain bike-specific Schwalbe ADDIX SPEED rubber tires with low rolling resistance and high durability.

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Diamondback Hook 24

Diamondback Hook 24

MSRP: $550

  • Tire size: 24″
  • Suitable for ages 8-12


Getting into the larger kids mountain bikes, we have the Diamondback Hook 24″ designed for ages 8-12. The Hook comes with a hefty Zoom fork with 50mm travel, which is significantly more than you’ll find on 20″ kids’ mountain bikes.

Like many adult mountain bikes, the Diamondback Hook comes with a 7-speed Shimano Drivetrain.

The brakes are upgraded from the smaller kids’ mountain bike models, and the Hook comes with mechanical disc brakes. The frame is made from 6061 aluminum alloy that is built to be simultaneously durable and reliable.

MTB Wanda Tire 24×2.25″ tires offer a good balance of grip and low rolling resistance.

While it is recommended for ages 8-12, riders that are 53” to 62” tall can fit on the Diamondback Hook while making it suitable for shorter adults too.

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Specialized Riprock 24

Specialized Riprock 24

MSRP: $700

  • Tire size: 24″
  • Suitable for 47″ – 56″ height


Specialized RipRock 24 is a big upgrade compared to off-brand kids mountain bikes. The RipRock 24 is a kids’ mountain bike with 24″ wheels suitable for ages 7-11 and riders who are 47-56″ tall.

The RipRock weighs around 23 lb, which is reasonably lightweight for a mountain bike of this caliber.

Specialized RipRock 24 is filled with fantastic features, which is to be expected from this brand. Made from 6061 aluminum alloy, the frame is durable and comfortable, just like most of the other frames on this list.

The microShift Advent rear derailleur offers 9 wide-range gears, which is perfect for climbing, and more than other similar affordable models.

Moreover, this bike rolls on 24 x 2.35″ tires with low rolling resistance and fantastic shock absorption. As you can see from the image, the RipRock does not have front suspension, so it lacks some vibration absorption, but at least it’s pretty lightweight.

The seat and handlebars are specifically designed for kids, while the hydraulic disc brakes will provide lots of stopping power.

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Co-op Cycles REV DRT 24

Co-op Cycles REV DRT 24

MSRP: $529

  • Tire size: 24″
  • Suitable for ages 8-12


Co-op Cycles REV DRT is very similar to the Co-op Cycles REV kids bike, though there are a number of important differences.

First of all, the Co-op Cycles REV DRT is a 24″ kids bike designed for ages 8-12. There is also front suspension in the SR Suntour XCT JR24 fork that is common among kids’ mountain bikes.

See more: Full Overview of REV Series

There is an 8-speed Shimano Tourney drivetrain and hydraulic disc brakes which provide lots of stopping power. REV DRT comes with extra-wide tires for a kid’s mountain bike in the Slant Six Sport 24 x 2.6″ tires.

The frame is a bit heavy at 31lbs which is hardly lighter than comparable kids’ electric mountain bikes. However, the frame and components are incredibly durable.

Co-op Cycles REV DRT can hold up to 120lbs including the rider and everything carried on the bike.

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woom OFF AIR 6

woom OFF AIR 6

MSRP: $1,049

  • Tire size: 26″
  • Suitable for ages 10-14


With 26″ tires, the woom OFF AIR 6 is suitable for ages 10-14, but it also fits riders 55-65″ tall. Without an electric motor, the woom OFF AIR 6 is much lighter than other woom electric bikes – the woom OFF AIR 6 weighs just 24.3lbs.

In fact, woom OFF AIR 6 is known for being one of the lightest kids’ mountain bikes on offer. Its lightweight aluminum frame is as durable as ever and features “sporty” geometry including a long wheelbase and flat steering angle.

Like other woom frames, the OFF AIR 6 has a kink in the top tube that makes mounting and dismounting much easier.

SRAM X5 shifting is high-quality for a kids’ mountain bike, and the OFF AIR 6 comes with 9 speeds and an SRAM trigger shifter. At the front of the bike is a hydraulic air suspension fork with 90mm travel and adjustable compression.

Like other woom kids mountain bikes, OFF AIR 6 comes with 26 x 2.35″ Schwalbe Rocket Ron tires with ADDIX SPEED rubber compounds. The saddle, handlebars, and grips are kids-specific.

For stopping power in all conditions, woom OFF AIR 6 has hydraulic disc brakes from PromaxDisc with 160mm (front) and 140mm (rear) rotors and levers specifically designed for children’s hands.

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Cannondale Habit 26

Cannondale Habit 26

MSRP: $1,650

  • Tire size: 26″
  • Suitable for ages 10-14


The first full-suspension kids’ mountain bike on our list is the Cannondale Habit 26. Built with Cannondale’s SmartForm C3 aluminum, this 26″ kids’ mountain bike is light, snappy, and versatile. Its frame features a threaded bottom bracket and internal cable routing, which is high-quality for a kids’ mountain bike.

One of the standout features of the Cannondale Habit 26 is its dual suspension setup. The SR Suntour XCR34 fork is air-sprung and offers 120mm of travel, while the X-Fusion O2 Pro rear shock features rebound adjustment.

The microShift Advent X rear derailleur provides 10 wide-range gears combined with an 11-48T cassette that is perfect for climbing, descending, and everything in between. But Tektro provides hydraulic disc brakes.

Finally, the WTB Vigilante 26×2.4″ tires are pretty wide and versatile, so the Cannondale Habit 26 can be used for different riding styles, including trail, XC, and light enduro.

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Giant STP 24 FS

Giant STP 24 FS

MSRP: $650

  • Tire size: 26″
  • Suitable for ages 10-14


This kid’s mountain bike is made from lightweight Aluxx-grade aluminum and comes with a Suntour XCT L24 suspension fork.

The fork offers 80 mm travel and comes with a lockout feature. MicroShift provides the drivetrain with its Acolyte derailleur and trigger shifters. There is 8-speed shifting on the Giant STP 24 FS, which features an 12-42T cassette.

One of the standout features of this kids’ mountain bike is the rack and fender mounts around the frame. This adds plenty of versatility for off-road trail use and even bikepacking trips for kids.

StraightShot hidden cable routing is an added bonus to the aesthetic frame, and the Tektro hydraulic disc brakes with 160mm rotors provide plenty of stopping power.

Lastly, the tires on the Giant STP 24 FS are 2.2″ wide, which will make this bike stable on most off-road terrains.

See more: Best Bikes for Teenagers

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What to Consider

Mountain bikes for kids tend to have less travel than adult mountain bikes. Travel allows the suspension to compress. The more travel you have, the more bumps and jumps your bike can handle. However, most kids’ full-suspension mountain bikes aren’t meant for tackling gnarly trails (yet), so the added travel wouldn’t have much of a benefit.

Longer travel also means heavier and more expensive suspension set-ups, which are rarely necessary on a kids’ mountain bike.

Most kids’ mountain bikes have kids-specific components and features such as smaller-reach levers, narrower handlebars, and smaller seats.

These features are specifically designed for smaller riders and they can make the riding experience much more comfortable for kids.

Overall, kids mountain bikes are definitely worth purchasing for the improved riding experience and kids-specific features.

For those getting into mountain biking for the first time, it can be extremely difficult to learn how to ride on an adult mountain bike which might not be the correct size or have the features that you need.


Sizing for Kids Mountain Bikes

Kids mountain bikes come in all shapes and sizes, just like adult ones

One of the trickiest parts of purchasing a kids’ mountain bike is getting the sizing right. Kids can grow fast, and you certainly don’t want them to outgrow their brand new MTB in just a few months.

When it comes to sizing a boys’ mountain bike or girls’ mountain bike, let’s start with the basics. You need to measure the rider’s height first. After that make sure that they can comfortably stand over the bike without hitting the frame or balancing on their tip toes. If they cannot stand over the frame comfortably, then the frame is too big.

In talking about frame sizes, we are talking about the inches advertised for a specific kids’ bike. As opposed to most adult bicycles, especially road bikes or hybrids, kids’ mountain bikes are not designated by Small, Medium, Large, or 52cm, 56cm, or 60cm frames.

Instead, kids’ bikes are sized based on their wheel size in inches. That is why each mountain bike on our list is either 20″, 24″, or 26″.

Here is a rough guide to kids’ mountain bike sizing based on the rider’s height:

  • 20″ wheels: rider height of 42″ to 52″ (ages 6-10)
  • 24″ wheels: rider height of 50″ to 58″ (ages 8-12)
  • 26″ wheels: rider height of 52″ to 64″ (ages 10-14)


Of course, these are not hard-and-fast rules as every rider will be built differently, such as longer or shorter legs, etc. But you can use this chart as a rough guide to start looking at mountain bikes for kids.

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