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These are the Best 20″ Boys Bikes For 5 to 9 Year-olds

By Sam Millers   /  Last updated - November 18, 2021   /  Best-Of-Reviews, Kids, Mountain Bikes

Children grow up quickly, which means they may need a new bike every 2 or 3 years. Just like with adults, it’s important to fit the right bike size for kids so they avoid strain or injury and get the most enjoyment out of bike riding. The correct 20-inch bike age is usually somewhere between 5 to 9 years old, and once children reach 5 years of age, they have usually learned to pedal and balance on their own. At this point, you can upgrade from a 16-inch training bike to their first real 20-inch bike.

boy jumping a mountain bike

Anyways, if you are looking for the best 20-inch bike for a boy, take a look at the sections down below to find you the most suitable deal out there



Mountain bikes

BMX bikes

Urban bikes

*Related – 7 Best Kids Full-Suspension Mountain Bikes


Why To Get A Mountain Bike For Boys?

Boys tend to be rough with their toys and they like getting dirty, so a mountain bike is a perfect answer. Boy’s mountain bikes are built tough to handle abuse and have thicker tires for better shock absorption, so they’ll want to ride more often. Statistics show that kids who ride bikes have a far less chance of developing obesity in adulthood.

BMX vs Urban vs Mountain Bike

BMX bikes are designed specifically for use in parks to do tricks and jump on ramps and half-pipes. Although they can be ridden elsewhere on streets and in nature, they usually aren’t as comfortable as mountain bikes over long distances. BMX bikes usually only have one gear so it can be difficult to ride up long hills with them.

You won’t be able to do the same tricks and jumps on mountain bikes, but you can tackle varied terrain, explore the mountains and charge downhill with front suspension.

Urban bikes have lighter frames and thinner, smoother tires than mountain bikes, so they’re easier to ride on pavement. However, they are weaker and rarely have any suspension, so they aren’t as fun for off-road riding.


Quick Round-Up:

Best 20″ Mountain bikes:

  • Best Full-Suspension MTB: Norco – Fluid
  • Best Equipped Hardtail MTB: Prevelo – Zulu Three / woom
  • Most Popular: Cannondale Trail 4
  • Best Value: Co-op Cycles – REV

Editor’s Recommendation 🏆

For best quality, you can’t beat the Norco Fluid. It has the best selection of parts and will provide the most fun ride. However, it is the most expensive.

For the best value for money, I’d choose either the woom – OFFAIR or the Prevelo Zulu Three. Both these bikes, while relatively expensive, provide a host of excellent components that will last a long time and provide top performance.

Best 20″ BMX bike:

  • Mongoose – Legion





Prevelo – Zulu Three (+Three Heir)

Best in overall parts & performance

boys 20 inch bike

MSRP: $949 – $1,249

This high-quality 20-inch bike from Prevelo Bikes is quite pricey for a kids’ hardtail and best suited to boys who are serious about their riding. The 10-speed Shimano Deore drivetrain has Rapidfire shifters and features a Shadow rear derailleur with an 11-36T cassette and a 30T alloy sprocket on an HEIR crank. Sadly, the groupset doesn’t expand to the brakes, featuring only Tektro rather than Shimano hydraulic discs. 

Up front, you get an impressive SR Suntour XMC air-sprung fork with 80mm of travel, decent enough for some big jumps or serious downhill charging. The wheelset is fairly basic, featuring standard alloy rims and Kenda Small Block 20×2.1″ tires.

If you want to upgrade your Zulu Three you can go for the slightly more price Zulu Three HEIR at $1,249. This benefits from some significant upgrades, including an HEIR 20 80mm carbon/alloy fork with adjustable rebound, Shimano SLX drivetrain with HG500 cassette, and VEE Crown Gem tires on Stan’s Crest tubeless-ready rims. It’s basically a professional-level MTB for small people!

Optional extras include a dropper post, custom color grips, bicycle bell, personalization, rechargeable USB lights, and an official Prevelo team jersey.

80mm travel / 10-speed Shimano Zee / Hydraulic Disc Brakes

Recommended Age Range: 5½ to 9 years




Co-op Cycles – REV 20″

Best Value!

boys 20 inch mountain bike

MSRP: $339
REI Co-op

The Co-op REV 20 is a mid-range REI kids bike that would make a great introductory MTB or an upgrade from a 16″. It’s light, simple, and affordable without coming across as cheap and has everything a kid needs in his first MTB.

The 6061 aluminum frame hosts a basic 6-speed Shimano Tourney gearset with Logan mechanical disc brakes and simple Revo twist shifters. There’s no suspension so clearly, this is not intended for downhill or park riding but will provide hours of entertainment riding around local parks and trails.

6-Speed Shimano Tourney / Mechanical Disc Brakes / 2.6″ extra-wide tires

Maximum weight limit: 80lbs 




Cannondale – Trail 20″

cannondale trail 20 mountain bike

MSRP: $450
REI Co-op

This 20″ mountain bike from Cannondale is an excellent introductory MTB from a well-known and trusted brand. It features a quality C2 alloy frame and Suntour suspension fork with 40mm of travel. This is great for kids wanting to hit ough trails and experiment with some basic downhill riding.

  • Kickstand
  • 20 x 1.95″
  • V-Brakes

The drivetrain is fairly simple – a 7-speed Shimano Tourney with a single Revo twist-shifter which is more than enough for a kids’ bike. However, the use of alloy V-brakes rather than disc brakes is a bit disappointing, especially on a mountain bike.

7-speed Shimano Tourney Revo / 40mm travel / 3 different designs

Recommended Age Range: 5-9




woom – OFF AIR 4

woom mountain bike

MSRP: $869

Woom’s OFF AIR may be the best 20-inch bike on our list, with a lightweight aluminum frame and impressive carbon fork. The top-quality 9-speed SRAM X5 drivetrain is a standout feature and not something you usually find on a kids’ bike!

  • 20 x 2.25″ tires

Keeping up with the quality you also get fat 2.25″ Schwalbe Rocket Ron tires on superlight Woom rims, paired with Promax hydraulic disc brakes. Sure, it’s not the cheapest but even at $869, this bike offers excellent value for money.

9-speed SRAM X5 / Hydraulic Disc Brakes

Recommended age range: 6- 8 yo / 46″ – 51″




Early Rider – Limited Seeker

boys chrome mountain bike

MSRP: $829
REI Co-op

This boy’s 20-inch mountain bike from Easy Rider looks very professional with its brushed aluminum finish and extra-fat 2.25″ tires. It doesn’t mess around with cheap parts either, featuring a killer 10-speed Prime 8 drivetrain from Californian gear manufacturer Box Components.

  • 20 x 2.25″ tires
  • Box 4 P8 Clutch Equipped Derailleur
  • 6061 Aluminum Frame

This is complemented by Promax hydraulic disc brakes set on Easy Rider alloy rims with Vee Crown Gem tires. Finished off with some Ritchey and Samox components, this is a unique bike with a high-quality feel.

10-speed / Mechanical Disc Brakes / 160mm disc rotors

Recommended Age Range: 5.5 – 8




Quietkat – Ripper

quietkat ripper kids ebike

MSRP: $2,499

QuietKat wanted to be able to equip the whole family with quality E-MTBs.

The ripper is a children’s E-Bike that’s no less capable than their adult models. Designed with extra fat 20”x4” tires, the Ripper works well as a kids electric hunting bike because of it’s ability to take down different riding surfaces. A 100mm fork softens things up and helps younger riders manage difficult terrain. With a maximum range of 42 miles, it’s a great ride for young adventurers getting out onto their first expeditions.

The Ripper is a perfect introductory E-MTB for riders up to 5’6” looking for fast paced fun.




Norco – Fluid 2.2 FS ‘2021

boys blue full-suspension mountain bike

MSRP: $1,599
Jenson USA

The Fluid is a full-suspension 20-inch mountain bike from leading MTB brand Norco. It’s a great way to introduce young boys to the benefits of full suspension in parks or on downhills. The lightweight aluminum frame is kitted out with a RockShox Monarch rear shock and a 60mm RST First 24 fork.

  • Alex DP17 Aluminum wheels
  • Tektro HD-M286 Hydraulic Disc Brakes
  • 20 x 2.0″

At the price, you’d expect quality and you won’t be disappointed. A top-range 10-speed Shimano Deore drivetrain is complemented by Tektro hydraulic disc brakes on Alex DP17 rims with Maxxis MaxxDaddy 2 inch tires. That’s a lot of bike for a little kid, hopefully, they deserve it!

10-Speed Shimano Deore / 60mm travel f / r / Tektro Hydraulic Disc Brakes

Recommended Height Range: 3’8″ – 4’3″




Mongoose – Argus

mongoose boys fat tire bike

Check Price at Amazon.com

Mongoose has long been a leader in BMX and MTB bikes and now they’re breaking into the popular fat bike scene. This new boy 20-inch fat tire bike is perfect for cycling on any terrain, from snow to sand. 

The Argus features a steel frame with a 7-speed Shimano Tourney gearset and mechanical disc brakes. You don’t get any suspension but the fat 4-inch tires will provide more than enough padding on bumpy trails. The Fat Bike scene is getting more popular every day because it’s a great way to explore the new territory where normal MTB bikes can’t go – get involved!

20 x 4″ / 7-Speed Shimano Tourney

Recommended height range: 4′ – 5′ (6 years and up)


Trek – Roscoe 20

Not available online, order in-store

trek black boys mountain bike

MSRP: $450
Trekbikes (Available in-store only)

The Roscoe is a 20″ Trek bike with 2.8″ mid-fat tires that are wide but not too heavy, making it ideal for exploring some wild terrain without sacrificing pedal power. Fat tire bikes can be notoriously heavy to pedal so this makes for a nice middle-ground introduction to bigger tires for smaller riders. 

It has a lightweight Alpha Aluminum frame with a rigid fork and Shimano Tourney 8-speed drivetrain. The Tektro mechanical disc brakes aren’t the best but they get the job done, and the wheelset includes basic alloy rims with Chen-Shin tires.

8-Speed Shimano Tourney / 20 x 2.8″ / Mechanical disc brakes

Recommended height range: 3’8″ – 4’4″




Scott – Scale 20

scott boys mountain bike

This kids 20-inch mountain bike from legendary manufacturer Scott would make an excellent upgrade for a budding rider. The alloy frame includes an SR Suntour fork with 40mm of travel and a 7-speed Shimano drivetrain.

  • 20 x 2″ tires

We would’ve liked to see disc brakes rather than alloy V-brakes which are quickly becoming redundant but they do the job. The Kenda 2.2″ Booster tires are decent quality and overall it’s a nice bike although it lacks any outstanding features.

7-Speed Shimano Tourney / V-brakes / 40mm travel







Haro – Annexi SI 20″

MSRP: $270
Jenson USA

Available in green and black, the Annexi SI is built on a lightweight yet durable 6061 aluminum frame and steel fork. Haro bikes is known for making dirt jump and bmx bikes so there more than enough to rely on the brand.

The bike has got a 1-piece 165mm crank with USA loose ball bottom bracket for a more agressive street-style riding. If you think your kid really wants to evolve in cycling, this could be the right tool to get him to the next level!




Mongoose – Legion Freestyle

Park / Street / Dirt

boys black bmx bike

Check Price on Amazon

This kids’ BMX bike from Mongoose looks cool with army-brown tires and grips on a black, steel frame. The 25T alloy chainring drives a 9T rear cog on aluminum rims with 2.3″ tires. 

Related: Best BMX Bikes (+ Dirt Jump Bikes)

  • 20×2.3″
  • V-brake on the rear
  • Hi-Tensile steel frame
  • 25x9t gearing

A single rear U-brake provides precision stopping and speed control and the 50mm stem and threadless headset gives maximum steering performance. All you need to do is bring the style!

Suggested rider height: 5’0″ – 5’6″


Elite – 20” & 16″ BMX Bicycle The Stealth Freestyle Bike

boys bmx bike

Check Price at Amazon.com

This boys’ 20 inch BMX bike looks awesome, with a gunmetal black paint job and eye-catching blue tires. It’s made from hi-tensile steel which is a bit heavy but super strong. It’ll handle anything the park or dirt jumps can throw at it.

  • Steel frame
  • Includes 1 set of pegs

The single-speed drivetrain has a 25T sprocket matched with a 9T rear cog, giving you quick and instant power. On the wheels are fat 2.5″ tires and with only a rear caliper brake you won’t accidentally go over the handlebars.





Maintenance-free belt-drive gearing 🏆

Priority – Start 20″

priority bicycles 200

MSRP: $369
Priority Bicycles

Priority Bicycles are a no-nonsense brand of high-quality, belt drive bikes from New York City. This top-of-the-range kids belt drive bike is the perfect hassle-free 3-speed hybrid bike for your young one to get out and get exploring.

  • 3-speed internal gearing
  • Kickstand
  • Dual hand-brakes

It has thick tires for urban and gravel terrain plus front and rear V-brakes and an awesome Gates Carbon drivetrain which is super easy to clean and maintain. Lightweight, rust-proof, and comfortable, it’s the perfect bike for adventurous city kids.

Fits riders with inseam: 22″ – 28.5″




Cannondale – Quick 20 Kids’ Bike

cannondale boys mountain bike with a rigid fork

MSRP: $380
REI Co-op

This bike for 6-year-olds is the perfect upgrade from training wheels and introduction to gears. The simple 1×7 drivetrain is easily controlled by Shimano’s REVO twist shifter, with easy braking from Promax V-brakes.

  • Shimano Tourney 7-speed derailleur
  • Kickstand
  • Fast 20 x 1.5″ tires
  • V-brakes

The KT Alloy freehub allows you to coast along, absorbing bumps with the 1.5″ Kenda Small Block tires and light Cannondale 20″ rims. An impressive first hybrid bike for kids that should provide them many years of fun cycling.




Co-op Cycles – REV 20 Kids’ Bike

rei co op kids bike

MSRP: $209
REI Co-op

This Co-op kids city bike is a great introductory bike for getting around town, enjoying the parks, and visiting friends. It’s lightweight aluminum frame and steel fork are tough enough for urban streets, while the 1.75″ Kenda Kontact tires keep you safe from punctures.

  • Chainguard
  • Single-speed
  • Steel frame
  • Reflective tires
  • Kickstand
  • V-brakes

Single-speed pedal power is provided by a 36T alloy crank and 16T KT coaster hub with a Tektro rear caliper brake. It’s a decent introductory bike for simple trips around the neighborhood.

Max weight limit: 80 lbs




Schwinn – Stingray

blue boys bike

Check Price at Amazon.com

This iconic cruiser-style Schwinn kids bike will have heads turning as your son rolls down the road on it. The super-cool, extra-long handlebars, and chrome-finish make it look like an old skool prop from a 90’s MTV music video.

  • Chainguard
  • Steel frame
  • Single-Speed

The steel frame rolls on fat 2.1″ tires and uses a single-speed drivetrain with a simple coaster brake for stopping. It sticks to the classics, using genuine vintage parts for a real nostalgic look and feel.

Age recommendation: 6+ / Height range: 4’0″ – 5’0″


Electra – Sprocket 20 Kids’ Bike

electra boys black cruiser bike

MSRP: $320
REI Co-op

This Electa kids 20-inch bike has a funky beach-cruiser style, great for slow and comfortable rolling around town. The hi-tensile frame has a single-speed freewheel hub running 18T off a 32T crank, with both front and rear rim brakes on alloy rims.

  • Single-speed
  • Aluminum frame & steel fork
  • 20 x 2.15″ tires

The 2.15″ tires are puncture-resistant, saving you effort and money on repairs and giving you more time for fun. All you need to do is head out and explore the world!

Recommended Age Range: 5 – 8 (3’8″ – 4’5″)




Electra – Firetail 1

red electra bike

MSRP: $340
REI Co-op

Oh wow, look at this funky machine! Your son will be the talk of the town on this stylish. 20″ boys cruiser bike in eye-catching metallic red with dragon decals.

  • Steel frame
  • 20 x 2.15″
  • Kickstand

The steel frame has a comfortable, low-slung geometry and extra-wide 2.15″ tires, making it the coolest, smoothest bike in town. With only one 1-speed, it’s best suited to slow, easy rides along flat town roads. Includes a coaster and rim brake, plus a comfy sprung-saddle and a noisy bell to wake the neighborhood.




Huffy – Stone

4.1 / 5 out of 1,000+ ratings on Amazon

blue boys mountain bike

Check Price at Amazon.com

This Huffy kids bike comes with a 6-speed Shimano drivetrain so your young cyclist can tackle hills and pick up speed on the flats. The strong steel frame will handle all sorts of terrain and the 1.95″ tires eat up vibration for extra comfort.

  • 20 x 1.95″
  • Steel frame
  • 6-speed

The adjustable handlebars and seat make it easy to fit kids from 5 to 9 years old, meaning it’ll provide you many years of service. An excellent bike for school commutes, play dates, or recreational weekend rides.

Recommended age range: 5-9 / 44-56″ in length


Strider – 20″ Sport Balanace Bike

Strider Sport 20 Inch Balance Bike

MSRP: $219

The Strider is a 20″ balance bike that makes a fun upgrade from a kids’ bike with training wheels. You get all the fun of a full-size bike without having to worry about pedaling and you can learn to balance at the same time.

  • Available in black and white
  • Steel frame & fork
  • 20 x 1.75″

Kids can push along using their feet to accelerate and then balance on the foot platforms while they zoom down the street. It’s the most fun you can have on two wheels while learning a new skill!





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