Is WOOM 4 A Good Choice? – [WOOM 4 Review]

Share with friends
We use affiliate links and may receive a small commission on purchases.

WOOM 4 Review

  • Price: $499
  • Frame: Aluminum
  • Tires: 20 x 1.4″ Schwalbe Little Joe folding tires
  • Gear: 1×8

What we like about it: Ergonomic crank length and pedal positioning, suitable for children’s bodies.

What we don’t like about it: Rim brakes provide average braking performance and accumulate excess heat, potentially damaging the bike.

Rating: (4.6/5)


The WOOM 4 can help you ignite your child’s passion for cycling, fostering a closer parent-child relationship. Furthermore, it offers outstanding performance and comfort, making it easy for your child to enjoy cycling and exercise. The WOOM 4 has a significant impact on a child’s growth.

Below, we analyze the riding experience, key features, components, specifications, and other versions of the WOOM 4. In the latter part of this article, we also compare several top bicycle models. If you want to learn more about bike reviews, feel free to follow us.

Riding Experience

Off-Road Riding

On a sunny weekend, my son Eric and I set out on an adventure. Eric rode his WOOM 4 bike, leading the way, while I followed on another bike. We embarked on an exciting off-road journey, determined to explore the wonders of nature and relish the joy of cycling.

Eric felt the comfort of the seat and the firm grip of the handlebars on his WOOM 4 bike. The bike’s gears allowed him to effortlessly tackle uphill and downhill challenges. The brakes responded promptly, ensuring stability and control as he maneuvered through rough trails, with beautiful natural scenery unfolding before him.

I rode on the other bike, closely following Eric. I watched him confidently navigate the trails, knowing that the WOOM 4 bike was reliable and safe. Hnoestly, I had no worries about Eric’s ride. When facing uphill sections, Eric smoothly adjusted the gear system on his WOOM 4 bike, making climbing a breeze. I also adjusted the bike’s gears, choosing the right gear to keep up. Together, we conquered steep hills, passing nature’s tests with unity and understanding between father and son.

Moving On

On downhill stretches, Eric adjusted his speed, feeling the exhilarating rush of wind against his cheeks. I gripped the handlebars tightly, steering agilely to keep up with Eric. The WOOM 4 bike’s brakes were responsive, allowing Eric to confidently control his downhill speed, while I easily applied the brakes to follow suit.

During our ride, we not only savored the excitement of speed but also relished the beauty and serenity of nature. Eric occasionally looked back to check if I was keeping up, and I responded with a bright smile, urging him to explore uncharted paths ahead. The design of the WOOM 4’s saddle and wheels provided Eric with a comfortable and stable riding experience.

Finally, we reached our destination, a lakeside meadow. Here, we parked our bikes for a picnic. After our meal, we rode back home together, and I could sense our bond growing even stronger.


The WOOM 4 is an exceptional all-purpose youth bike with a lightweight, high-quality frame made from AA 6061 aluminum. Its geometry design with 20-inch wheels makes the bike agile and easy to control. The lower seating position, nimble steering, and relaxed geometry provide excellent control and comfort.

This bike features super-light SOOPA DOOPA HOOPS aluminum rims. It comes equipped with aluminum hubs with sealed bearings and supports for Woom snap-on mudguards, ensuring comfortable riding even in wet conditions. Notably, the reflective stripes on the tire sidewalls ensure optimal visibility even in low-light conditions.


Other Versions

After numerous tests, we have gained a deeper understanding of this bike. It is a highly versatile youth bike.

However, many riders have specific requirements for its performance and components. So, we conducted further research with bikes of similar type.

Woom 4 (Microshift)

Woom 4 (Microshift)

The Woom 4 (Microshift) weighs 17.0 lbs and features an aluminum frame, aluminum fork, and 20″ aluminum wheels. The regular Woom 4 shares the same configuration but is slightly heavier at 17.9 lbs. The primary difference between these two bikes lies in the components. The Woom 4 (Microshift) uses microshift components, while the regular Woom 4 uses SRAM components.

Furthermore, the distinction between these two component sets is that SRAM employs an 8-speed drivetrain, whereas Microshift uses a 7-speed drivetrain. However, the overall gear range remains the same, making Microshift the lighter option.

What do we like about it?

  • Ergonomically designed crank length and pedal positioning suitable for children’s bodies.
  • Chain guard prevents pants from getting caught.
  • The WOOM 4’s 8-speed drivetrain, combined with an easy-to-operate twist shifter, allows children to conquer various terrains effortlessly.
  • Saddle contact points are designed for children following ergonomic principles.

What don’t we like about it?

  • Rim brakes provide average braking performance, and accumulate excess heat, potentially damaging the bike.


  • Is this bike suitable for beginners?

This bike is suitable for both beginners and experienced riders.

  • What is the weight limit for this bike?

The weight limit for this bike is 155 lbs.

  • How many color options are available for this biken?

It is available in five colors: WOOM Red, Sky Blue, WOOM Green, Sunny Yellow, and Purple Haze.

  • What age group is this bike suitable for?

This bike is suitable for children aged 6-8.



FrameMade from light, high-quality AA 6061 aluminum material, Geometrically designed with 20″ wheels with agile and easy handling in mind, Low entry, lower sitting position, and forgiving steering geometry provide control and comfort, %[woom]% LEGGIE Kickstand pre-installed
ForkLight unicrown fork made out of aluminum, 1″ shaft, Generous trail angle for easy handling
HeadsetFully-integrated 1″ headset, Sealed industrial bearings, Integrated ahead clamp
StemLightweight stem made out of forged aluminum, Adjustable height and reach mean the stem can be adjusted for optimal riding position as the child grows. Handlebars attached via two clamps and fixed with two 5 mm hex bolts, Integrated headset bolt allows for easy compression adjustment
HandlebarWide, ergonomically adapted, light aluminum bars offer more control, Sandblasted and black anodized, Width: 54 cm
SaddleErgonomically designed to fit children’s pelvis, Non-toxic, Side protection to lean against walls
SeatpostAnodized aluminum seatpost, Minimum insertion point marked, plus integrated guide in seat tube
Gripswoom Ergogrip – designed specifically for kid’s hands, Ergonomically formed gripping surface, non-toxic, Handlebar ends with extra-large diameter for greater protection, Screw-in grips ensure secure attachment to handlebars


BrakesTwo independently operated V-brakes with braking power adapted for children, Brake levers are ergonomically adapted, reach-adjustable, and suitable for kid’s hands, High-quality Jagwire cables provide reduced friction and smooth performance


RimsUltralight SOOPA DOOPA HOOPS aluminum rims, Aluminum hubs with sealed bearings and mounts for woom click-on fenders, Quick-release skewers for easy installation and removal, 20 lightweight, stainless steel spokes, double-crossed spoking
Tires20 x 1.4″ Schwalbe Little Joe folding tires – woom edition, High-quality, light tires for low rolling resistance and maximum grip, Schrader (car-type) valves, Reflective striping on tire sidewall for optimal visibility even in low-light conditions

Comparison Table

BikesClick viewTiresDrivetrainFrame MaterialGroupset
Merida MATTS J.20 DiscClick ViewKenda Small Black 8, 20×1.95″1 x 7AluminumShimano Altus
CUBE ACID 200 ALLROADClick ViewCUBE IMPAC Smartpac, 2.11 x 7AluminumShimano Tourney
HOY Bonaly 20 Inch Wheel Kids Lightweight BikeClick ViewKENDA 60TPI casing wire bead1 x 6AluminumShimano Tourney
Cannondale Kids Cujo 20Click ViewKenda Slant 6, 20 x 2.6″1 x 7AluminumShimano Tourney

WOOM 4 vs. Merida MATTS J. 20 Disc

Merida MATTS J. 20 Disc
Merida MATTS J. 20 Disc

The Merida MATTS J. 20 Disc weighs 20.9 lbs and is a hardtail bike. It features 40mm of front travel, providing good suspension for added comfort during rides. Additionally, this bike is equipped with hydraulic disc brakes, offering excellent braking performance, although maintenance and repairs might not be very convenient. The bike also comes with a 1×7 drivetrain, which provides decent but not exceptional shifting capabilities.

On the other hand, the WOOM 4 weighs only 17.9 lbs, lacks a suspension system, and uses rim brakes. It’s worth noting that rim brakes tend to accumulate excess heat during prolonged downhill rides, potentially causing damage to both the brakes and wheel rims. However, the WOOM 4 features a 1×8 drivetrain. Compared to the 1×7 drivetrain on the Merida MATTS J. 20 Disc, the 1×8 drivetrain offers smoother shifting and a broader range of gear options.



The CUBE ACID 200 ALLROAD weighs 23.6 lbs, while the WOOM 4 is incredibly lightweight at only 17.9 lbs. This weight difference may be attributed to the CUBE ACID 200 ALLROAD having a steel fork, whereas the WOOM 4 features an aluminum fork. Aluminum forks are cost-effective, rust-resistant, and easy to repair if damaged. However, they can be brittle at welded joints and prone to fractures. On the other hand, steel forks are heavier, rigid, and offer better shock absorption. Their downside is susceptibility to rust, and maintenance might not be as straightforward.

Both of these bikes come with 20″ aluminum wheels and are equipped with rim brakes. However, the CUBE ACID 200 ALLROAD features a 1×7 drivetrain, while the WOOM 4 is equipped with a 1×8 drivetrain. The 1×8 drivetrain offers a broader range of gear options, smoother shifting, and quicker adaptation to the right gear for complex road conditions compared to the 1×7 drivetrain.

WOOM 4 vs. HOY Bonaly 20 Inch Wheel Kids Lightweight Bike

HOY Bonaly 20 Inch Wheel Kids Lightweight Bike
HOY Bonaly 20 Inch Wheel Kids Lightweight Bike

The HOY Bonaly 20 Inch Wheel Kids Lightweight Bike is priced at $483 and features an aluminum frame constructed from three sets of aluminum alloys. It boasts a lightweight design and maintains high strength where needed. Additionally, it comes with 20-inch wheels. However, its drivetrain is limited to a 1×6 system. With 6 gears and a 32-tooth chainring designed for kids, the crankset is shorter than that of adult bikes, making the riding position more suitable for children.

On the other hand, the WOOM 4 is slightly more expensive, priced at $499. It is equipped with an aluminum frame, aluminum fork, and aluminum wheels. However, its rim brakes offer only average performance and are not suitable for extended braking periods. Nevertheless, it features a 1×8 drivetrain, providing smooth and efficient shifting.

Learn More: HOY Bonaly 20 Inch Wheel Kids Lightweight Bike Worth Buying?

WOOM 4 vs. Cannondale Kids Cujo 20

Cannondale Kids Cujo 20
Cannondale Kids Cujo 20

The Cannondale Kids Cujo 20 comes with a 1×7 drivetrain, which offers decent performance. It features an all-aluminum structure, making it lightweight, but it’s priced slightly higher at $534. The Cannondale Kids Cujo 20 is equipped with mechanical disc brakes, which are convenient for maintenance. While their braking performance may not match hydraulic disc brakes, they are better than the rim brakes on the WOOM 4 in terms of safety.

On the other hand, the WOOM 4 offers a more affordable price with decent value, but its rim brakes may not be as safe. However, it features a 1×8 drivetrain. Compared to the 1×7 drivetrain of the Cannondale Kids Cujo 20, the 1×8 drivetrain offers a wider range and smoother shifting.

Learn More: Is Cannondale Kids Trail 20 Worth Buying?-[ Cannondale Kids Trail 20 Review]


This is our review of the WOOM 4. It is an excellent all-purpose youth bike that can cater to your child’s off-road interests. Considering all factors, we rate it at 4.6. If you’re interested in more bicycle-related information, please check out our other reviews.

Lastly, if you enjoy our content, feel free to share it with your friends. If you find our content helpful, you can subscribe via the email subscription button below. Thank you for your support!

Leave a Comment

Scroll to Top
Scroll to Top