Top 10 Best Kids Mountain Bikes in 2023

Embarking on the journey of mountain biking with your child is an exciting adventure, and having the right mountain bike is crucial for a fun and safe experience.

Whether you are looking for a toddler mountain bike, a mountain bike for 8 year olds, or youth mountain bikes with disc brakes, it is essential to choose one that suits your child’s age, size, and skill level.

Our comprehensive guide will walk you through the top 10 best kids mountain bikes in 2023, including the best full suspension mountain bike for kids, the best 20 inch mountain bikes, and the best mountain bike for 12 year old boy.

We will also provide essential tips on what to look for in a mountain bike, including size, weight, and safety features, as well as a comparison of the best mountain bike brands. So, let’s dive in and find the perfect mountain bike for your young adventurer!

First, Let’s Talk Money

If you are looking for real mountain bikes, made for actual mountain biking, then those expensive mountain bikes on this list are what you want. But they are for serious biking, their price tags are matched with their functions and features.

However, if you only want to buy an affordable mountain bike or recreational mountain bike for your kids, then our common mountain bike list would meet your needs. Lots of good “every day” bikes have bumpy tires that work well for easy dirt trails and even pump tracks.

Have no idea what kids bike to get for your kids? Check the following article

Best Kids Bikes: Your Guide to Choosing, Reviews, and More!

Considerations Before Buying Kids Mountain Bikes:

SIZE: A common mistake parents make is buying the wrong size bike. 20″ bikes usually suit 6 to 8-year-olds, while 24″ fit 9 to 11-year-olds. The best way to determine the right size is by measuring your child’s inseam. Budget bikes are often larger than pricier ones.

GEARS: Although many cheaper bikes have many gears (up to 18 or 21), more isn’t always better. This is because bikes with more gears often need 2 derailleurs (one for the front wheel and one for the back), and shifters for both hands. These are harder for kids to use, need more upkeep, and add unnecessary weight. Bikes with 6 to 8 gears are ideal.

WEIGHT: Be mindful of the weight – some recreational mountain bikes can weigh as much as 40 lbs! Aim for a bike between 20 and 30 lbs – the lighter, the better.

SUSPENSION FORKS: Suspension forks on recreational bikes are meant for casual riding only. They aren’t built to withstand the roughness of real trails but are suitable for basic dirt trails and small jumps in the neighborhood. They also tend to be very stiff and heavy, adding 5+ lbs of unnecessary weight, particularly on low-end budget bikes.

PRICE: Durable, quality bikes that don’t need major maintenance for several years usually start around $300 – $400. If possible, increasing your budget will reduce potential maintenance hassles and enhance the bike’s quality and performance.

ASSEMBLY: Even if a budget bike arrives assembled, we strongly advise taking it to a local bike shop for proper tuning. Brakes and derailleurs often need tuning even on new bikes.

MAINTENANCE: To prolong the life of a geared bike, ensure your child doesn’t lay the bike down on the derailleur side. Always place the bike on the ground with the derailleur (or chain side) facing up!

Top Kids Mountain Bike Brands

After years of testing and reviewing children’s bikes, we’ve found that the BEST children’s bikes are usually made by companies that specialize in kids’ bikes. These companies have invested time, money, and engineering efforts to focus on what makes a bike great for kids.

This is also true for youth mountain bikes. A few brands excel in making amazing mountain bikes for kids, and they occupy the top positions on this list.

However, we are happy to see that some of the major bike brands have noticed the growing number of young riders in the sport and have improved their offerings. While we believe that the major brands are still a bit behind, they do have some valid options, particularly at the more budget-friendly end of the range. When it comes to youth-sized 26″ and 27.5″ bikes, some major bike brands (such as Pivot) are also making exceptional bikes.

10 Best Kids Mountain Bikes

1. Diamondback Kid’s Mountain Bicycle

Diamondback Kid's Mountain Bicycle

Price: $220


  • Wheel Size: 20 Inches
  • Frame Material: Alloy Steel
  • Suspension: Front
  • Number of Speeds: 6
  • Age Range: 7 – 9 years

Team Review:

Our team at had the privilege of extensively testing the Diamondback Bicycles Cobra 20 Youth Mountain Bike over several weeks. We explored varied terrains, from rugged mountain trails to smooth bike paths, to provide an in-depth understanding of the bike’s capabilities. Here’s our comprehensive review:

Throughout our test, we were able to ascertain that the Cobra 20 is indeed one of the best kid mountain bikes in its price range. Being a children’s mountain bike designed for ages 7 to 9, it proved its mettle on most mountain biking for kids scenarios we put it through. The Alloy Steel frame, while sturdy, was on the heavier side which might pose challenges during uphill rides or if the child tries some tricks.

The 6-speed range was found to be just right for kids starting in mountain biking. The front suspension absorbed the rough patches effectively, providing a smoother ride on bumpy terrains. We did notice that the bike required some minor tuning, particularly in the shifting alignment, reminiscent of some user reviews. Furthermore, while the packaging was decent, we second the sentiment that the lack of a kickstand was an oversight.

To sum it up, for its price point, the Cobra 20 is a commendable bike for budding young mountain bikers. It delivers on most fronts but does come with a few challenges.


  • Sturdy frame
  • Effective front suspension
  • Perfect gear range for kids
  • Affordable price
  • Smooth gear shifting


  • Heavy for its size
  • No kickstand
  • Minor tuning required
  • Limited seat height adjustment
  • Some resistance in thumb shifting

Shop here: Diamondback Kid’s Mountain Bicycle

2. JOYSTAR 20 Inch Mountain Bike for Kids

JOYSTAR 20 Inch Mountain Bike for Kids

Price: $259.99


  • 20-inch kids mountain bike.
  • 7-speed Shimano drivetrain.
  • Disc brakes system.
  • 3-inch wide knobby tires.
  • Lightweight alloy steel frame.

Team Review:

Upon receiving the JOYSTAR 20-inch mountain bike, our team was immediately impressed with the packaging, noting its capability to protect the bike’s components from potential damages during shipping. We initiated our testing phase in various terrains like paved roads, grassy patches, and slight inclines over a span of two weeks. While our junior testers were thrilled with the way the bike rode, shifted, and braked, some initial adjustments were needed to align the front wheel with the disc brake.

Our team acknowledges that mountain biking for kids is a unique experience, and with the JOYSTAR being dubbed as the best kid mountain bike by some, it does provide an excellent introduction to children’s mountain biking. The gears shifted smoothly, and the wide tires held up exceptionally well, even on rough terrains like grassy patches and curbs. However, one aspect that caught our attention was the weight. Compared to other bikes of the same size, the JOYSTAR felt heavier, which could affect its performance when climbing hills.

Moreover, while the included Joystar Owner’s Manual provides guidance, it lacks specificity for this particular model, especially when it comes to setting or adjusting the disc brakes. This presented a slight challenge for our team as it necessitated external resources to ensure the brake system’s proper functioning. Nevertheless, considering its price point, the JOYSTAR offers reasonable value as a beginner’s mountain bike for kids.


  • Smooth gear shifting.
  • Sturdy tires for various terrains.
  • Reliable braking system.
  • Exceptional packaging.
  • Great value for price.


  • Heavier than some models.
  • Manual lacks specific guidance.
  • Front wheel alignment required.
  • Initial brake adjustments needed.
  • Not ideal for steep inclines.

Shop here: JOYSTAR 20 Inch Mountain Bike for Kids

3. Huffy Valcon 20″ Mountain Bike

Huffy Valcon 20" Mountain Bike

Price: $229.99


  • 20″ Alloy Steel Frame
  • Dual Full Suspension
  • 6-Speed Bike
  • Steel Linear Pull Brakes
  • Maximum Weight: 120 Pounds

Team Review:
During our team’s extensive test run of the Huffy Valcon 20″ Mountain Bike, we found this to be one of the best kid mountain bikes in its price range. We started our testing on moderate trails, transitioning from smooth park paths to rougher mountain biking terrains, ensuring a comprehensive understanding of its performance in various settings. Over a week of rigorous cycling in diverse conditions, we wanted to see how this children’s mountain bike would fare.

Right off the bat, its alloy steel frame and dual full suspension were appreciated, as they provided a comfortable ride even on the bumpier trails. Its 6-speed feature held up well during uphill and downhill rides, allowing the riders to switch gears smoothly. However, some adjustments were required on the steel linear pull brakes. They were slightly off-center, but with the right tweaks, the bike’s stopping power was optimal.

The weight of the bike is on the heavier side, which could be challenging for younger riders on long mountain biking expeditions. However, given its sturdiness and the assurance of durability, this aspect can be overlooked, especially for beginners. One should also consider seeking assistance or referring to YouTube videos for brake and derailleur adjustments, as the included instructions may not be entirely clear.


  • Sturdy and Durable
  • Smooth Gear Shift
  • Comfortable Suspension
  • Affordable Price


  • Heavier Weight
  • Brake Adjustments Needed
  • Vague Assembly Instructions

Shop here: Huffy Valcon 20″ Mountain Bike

4. Mongoose Maxim Girls Mountain Bike

4. Mongoose Maxim Girls Mountain Bike

Price: $299


  • 24-inch aluminum frame
  • 21-speed drivetrain
  • Dual suspension
  • Lightweight construction
  • Lavender color

Team Review:
We took the bike through multiple terrains to really gauge its capabilities. The testing spanned over a period of two weeks in Bicyclingland’s designated mountain biking trails, which involved a mix of both smooth surfaces and rugged terrains suitable for mountain biking for kids. Given the bike’s lightweight aluminum construction, our team found it easy to handle. It was evident that this could be one of the best kid mountain bike options out there, especially for those venturing into children’s mountain bike activities.

The 21-speed drivetrain proved beneficial in tackling various inclines. While the lavender color gave it a stylish edge, what truly impressed us was the dual suspension system, ensuring a smoother ride on rougher trails. However, similar to some users’ feedback, we did notice the need for some initial adjustments, especially in the braking system. The brakes required some tuning to optimize performance, and the gear shifts, while mostly smooth, occasionally needed some recalibration.

In line with other reviews, we found the assembly straightforward, but one must be careful not to miss out on any crucial parts hidden within the packaging. It would have been beneficial if Mongoose included an extra set of nuts, bolts, and washers, perhaps even tools for those not well-equipped at home.


  • Lightweight and durable
  • Stylish color
  • Efficient 21-speed system
  • Smooth dual suspension


  • Brakes need adjustments
  • Gears occasionally misaligned
  • No extra tools provided
  • Assembly instructions could improve

Shop here: Mongoose Maxim Girls Mountain Bike

5. Schwinn High Timber Youth Mountain Bike

5. Schwinn High Timber Youth Mountain Bike

Price: $298.00 – $571.99


  • Steel frame, 27.5-inch wheels
  • Weight: 35.24 pounds
  • Brand: Schwinn, Model: High Timber
  • Limited lifetime warranty
  • Suitable for men

Team Review:

During our testing phase, which spanned over two weeks on various terrains, from rugged mountain trails to smooth park paths, we found the Schwinn High Timber bike to be quite a contender in the mountain biking for kids category. Given its steel frame and 27.5-inch wheel size, the bike is notably heavy. Though this weight can be felt especially when carrying it, it’s something most users adjust to quickly when riding.

The gear system caught our attention; while the rear shifts operate smoothly, the front shifting is a tad clunky and requires a bit of practice to find the optimal shifting spot. Furthermore, for extended riding sessions, the seat’s comfort becomes an issue, a sentiment echoed by other users. Braking is standard and gets the job done efficiently.

Despite being primarily suggested for men, it’s versatile enough to be used as a children’s mountain bike or even by women, depending on size preferences. The bike’s overall quality and performance make it one of the best kid mountain bike options available. However, for avid cyclists looking for more nuanced gear shifting or planning longer rides, some upgrades like the seat or handle grips might be necessary.


  • Durable steel frame
  • Smooth rear shifts
  • Reliable braking
  • Adjustable for growth


  • Heavy build
  • Uncomfortable seat
  • Front shifts tricky
  • Limited upgrade options

Shop here: Schwinn High Timber Youth Mountain Bike

6. Mongoose Argus MX Kids Fat Tire Mountain Bike

Mongoose Argus MX Kids Fat Tire Mountain Bike

Price: $289.41


  • ‎20-Inch Fat Knobby Tires
  • ‎High-Ten Alloy Steel Frame
  • ‎Single Speed
  • ‎Rear Alloy V Brake
  • ‎Specific Uses: Trail

Team Review

Our team at, always on the lookout for the best kid mountain bike, embarked on a rigorous testing phase with the Mongoose Argus MX Kids Fat Tire Mountain Bike. Our experienced cyclists took it for a spin in various terrains, from steep mountainous regions to flat trails. The tests were conducted over a week, each day spanning approximately 5 hours, and varying weather conditions.

From the first glance, the thickness of the tires was notably evident, which reminded us of the user who mentioned the same in their review. During our mountain biking sessions, especially while mountain biking for kids, the bike displayed exceptional traction on loose surfaces. However, a minor hiccup was observed regarding the pedal, echoing an issue highlighted by another user.

The rear brake system, after some initial adjustments, proved effective. Our team had mixed feelings about the bike’s braking; while it does stop efficiently, a single breaking system might not be suitable for all young mountain bikers. The assembly process was straightforward, though, just as a user had mentioned. However, the reflectors produced an irritating clicking sound, prompting us to consider alternative visibility options.

Our dedicated testing sessions revealed that this children’s mountain bike was, without doubt, designed for those who have some biking experience. Its design, though suitable for the mountainous terrains, might not be the best fit for absolute beginners.


  • Durable fat tires
  • Sturdy frame design
  • Suitable for varied terrains
  • Visually appealing


  • Pedal issue
  • Single brake system
  • Annoying reflector sound
  • Not for beginners.

Shop here: Mongoose Argus MX Kids Fat Tire Mountain Bike

7. Hiland 20 inch Freestyle Kids BMX Bike

Hiland 20 inch Freestyle Kids BMX Bike

Price: $179.99


  • ‎20-Inch Wheel Size
  • ‎Alloy Steel Frame
  • ‎Single Speed
  • ‎U Brake System
  • ‎Lightweight Design

Team Review

Our team took the Hiland 20 inch Freestyle Kids BMX Bike on an extensive testing journey spanning across various terrains from paved park paths to local BMX tracks. Over a period of a week, with an average of 4 hours of testing each day, the bike’s features were put to the test.

One of the standout features of this bike is its lightweight design, which makes it easier to maneuver, especially for kids transitioning to mountain biking. The single-speed configuration gave it a simple riding experience, which can be viewed as a plus for young riders just starting with mountain biking for kids. However, a consistent observation was the bike’s brake system. Several members from our team found the brakes hard to squeeze, much like the feedback from other users. This caused concerns, especially when considering a child’s hand strength. On the upside, the bike’s overall construction seems solid, with a distinct green color that could be particularly appealing for children.

We believe that while the Hiland BMX bike has some commendable features, improvements can be made, especially regarding the brake system for it to be labeled as the best kid mountain bike.


  • Lightweight construction
  • Sturdy alloy frame
  • Appealing design
  • Pegs included


  • Brake issues
  • No kickstand
  • Limited adjustability
  • Not beginner-friendly

Shop here: Hiland 20 inch Freestyle Kids BMX Bike

8. Elecony Nunu-T100 20 Inch Fat Tire Bike

Elecony Nunu-T100 20 Inch Fat Tire Bike

Price: $189.99


  • 20 Inches Carbon Steel Frame
  • Front Suspension
  • 7-Speed System
  • Disc Brake Feature
  • 20*2.125″ Fat Tires

Team Review

The Elecony Nunu-T100 20 Inch Fat Tire Bike underwent a rigorous week-long test by our team. With daily rides across sandy trails, mountainous terrains, and paved roads, the bike’s touted features were put under the microscope.

Straight out of the box, we noticed the bike needed some fine-tuning, especially with the derailer and brake setups, echoing sentiments from other users. Once adjusted, the bike’s performance on rough terrains was commendable, gliding smoothly over uneven ground thanks to its fat tires. The 7-speed system ensured flexibility across different terrains. However, the brake system raised some concerns, as we also experienced scraping post-assembly, a common issue cited by several users.

On the brighter side, shifting gears was smooth, making it user-friendly, especially for those who are new to mountain biking. While the bike’s size seemed perfect for younger riders, some of our taller team members wished for a larger frame to ensure more comfortable leg movement. With a responsive brand like Elecony at the helm, we believe this model has the potential to be considered among the best kid mountain bikes once minor issues are addressed.


  • Smooth gear shifting
  • Sturdy fat tires
  • Affordable price
  • Responsive brand


  • Brake alignment issues
  • Pre-assembly fine-tuning needed
  • Smaller frame size
  • Limited height adjustment.

Shop here: Elecony Nunu-T100 20 Inch Fat Tire Bike

9. Diamondback Bicycles Youth 24″ Wheel Mountain Bike

Diamondback Bicycles Youth 24" Wheel Mountain Bike

Price: $242.50


  • Mountain Bike for ages 9-12
  • 21-speed, Alloy Steel frame
  • 24″ Wheel Size, Front Suspension
  • Brake Style: Linear Pull
  • Specific for Trail use

Team Review:
Over the past month, our team put the Diamondback Bicycles Cobra Youth 24″ Wheel Mountain Bike through rigorous testing. We chose a variety of terrains that included both urban trails and more rugged mountain biking paths to simulate the environments a young rider might experience. We can’t emphasize enough how this bike showcases some of the best attributes of a children’s mountain bike.

It was easy to notice the bike’s stability, most likely due to its alloy steel frame. The 21-speed feature provided versatility on diverse terrains, giving riders a wider range to explore. On the flip side, a few team members reported some minor issues with tire quality. When taking sharp turns, there was occasional interference between the tire and pedals, which may raise concerns on design. Also, it would have been a bonus if the bike came with a kickstand.

Considering the Diamondback’s reputation, this model seems to be a quality option for children transitioning from their first bikes to something more challenging. The packaging was protective, ensuring minimal damage during shipping, but it’s always recommended to give the bike a thorough check for any shipping-related damages.


  • Durable alloy steel frame
  • Versatile 21-speed system
  • Trail-ready design
  • Good packaging for shipping


  • Tire-pedal interference
  • No kickstand included
  • Tire quality concerns
  • Might require professional assembly for some

Shop here: Diamondback Bicycles Youth 24″ Wheel Mountain Bike

10. Segway Ninebot 18″ Kids Bike

Segway Ninebot 18" Kids Bike

Price: $174.99


  • Bike Type: Kids Bike
  • Frame Material: Aluminum
  • Special Feature: Portable, Lightweight, Aluminum Frame
  • Included Components: Kickstand, Stem cap, Pedal
  • Brake Style: Caliper

Team Review

Recently, our team embarked on a comprehensive testing mission, taking the Segway Ninebot 18″ Kids Bike to local trails renowned for both their smooth asphalt and challenging dirt tracks. Over two weeks, we rigorously tested this bike in varying conditions, from sunny days to slightly drizzly mornings.

A notable highlight was the bike’s aluminum frame. Lightweight and sturdy, it offers optimal performance suitable for mountain biking for kids. This coupled with the portable design suggests that it may be amongst the best kid mountain bikes available today. While the bike’s aesthetic is sleek, echoing sentiments of children’s mountain bike aficionados, its functional design, especially the enclosed chain, ensures minimal dirt accumulation.

However, during our testing, some concerns arose. The plastic front brake lever, when compared to the otherwise high-quality components, seemed a bit out of place. It’s a potential weak point, especially considering the wear and tear children’s mountain bikes often undergo. Similarly, while the kickstand serves its purpose, its stability might raise some eyebrows among discerning parents.

Additionally, the bike’s assembly was straightforward, echoing experiences of many who found the process hassle-free. Although advertised for kids up to age 10, we believe it may be more ideal for those aged 6-8. The inclusion of essential components like the kickstand, stem cap, and pedal offers convenience right out of the box.

In summation, while the Segway Ninebot 18″ Kids Bike delivers in terms of design and portability, potential buyers should consider the long-term durability of some components.


  • Lightweight aluminum frame
  • Sleek design
  • Enclosed chain system
  • Easy assembly
  • Portable and sturdy


  • Plastic brake lever
  • Unstable kickstand
  • Ideal for younger age range
  • Limited component durability
  • Pedal quality concerns

Shop here: Segway Ninebot 18″ Kids Bike


a 35-year-old web developer and cycling coach based in Boulder, Colorado. Over the past ten years, my passion for cycling has transformed from a casual hobby into a way of life. As a lover of all things cycling, I am thrilled to share my journey with others who share the same enthusiasm for this incredible sport.