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New Arrival

Woom
EXPLORE 4 20in Bike - Kids'

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$769.00
Color:Jungle Green

Size:

Geometry

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The woom EXPLORE 4 runs on child-specific geometry, disc brakes, and 7 speeds

What Our Gearhead® Experts Are Saying:

"The hydraulic disc brakes and Shimano drivetrain on the EXPLORE 4 punch well above the price point for a kids' bike. I'd put this in front of a parent who wants their rider growing into real technique, not just surviving until they're big enough for a grown-up bike."


The EXPLORE 4's AA 6061 aluminum frame is butted for weight reduction without sacrificing stiffness, and the child-specific geometry positions riders in a lightly stretched stance that builds proper form from the start. Promax hydraulic flat-mount disc brakes with 140mm rotors front and rear deliver consistent stopping force in all weather with child-tuned lever reach. The Shimano SL-RV300 Revoshift twist shifter gives a clear gear indicator and tactile click through all seven cogs, paired with a narrow-wide 28T chainring and 11-28T cassette that handles both flat sprints and gradual climbs. The forged aluminum stem adjusts in both height and reach, and woom's ABC fit guide on both the stem and seatpost makes dialing in the right position straightforward for any parent.


Heads up - We do our best to keep bike specs and images current, but occasional component changes can happen without warning-and sometimes the photos might not show the exact build you'll receive. If you want to double-check the details, our Gearheads are always here to help.




Details

  • Hydraulic disc brakes stop safely without a strong squeeze
  • Shimano 7-speed lets kids shift up and back intuitively
  • Schwalbe Billy Bonkers tires grip pavement, gravel, and dirt
  • Adjustable stem grows with the rider, no new bike needed yet
  • Child-specific crank length protects knees on every pedal stroke
  • Ergonomic grips reduce hand fatigue on long rides
  • LEGGIE kickstand included, easy to park and go
  • woom's 10-year frame warranty backs every ride ahead
  • Item #WOO0006
Frame Material
AA 6061 aluminum
Suspension
hardtail
Fork
aluminum
Headset
integrated 1in
Shifters
Shimano SL RV300 Revoshift
Rear Derailleur
Shimano
Crankset
forged aluminum
Chainring Sizes
28t
Crank Arm Length
110mm
Cassette Range
11 - 28t
Brakeset
hydraulic disc
Brake Type
hydraulic disc
Rotors
140mm
Handlebar
aluminum riser
Handlebar Width
550mm
Stem
aluminum (adjustable)
Saddle
ergonomic (developed with Selle Royal)
Seatpost
aluminum
Wheelset
aluminum
Front Axle
quick release
Rear Axle
bolt-on
Tires
Schwalbe Billy Bonkers Performance Line
Tire Size
20 x 1.5in
Pedals
platform
Extras
LEGGIE kickstand
Claimed Weight
18lb (8.16kg)
Activity
trail
Manufacturer Warranty
[registered] 10 years

Explore On Any Terrain

Kid wearing helmet riding down paved road with graffitied wall and trees in the background.

graphic icon showing two kids representing age.

icon showing height of kids.

icon showing height of wheel size.

Built For Confident Riding

Detail shot of disc brake caliper and rotor.

Disc Brakes

Powerful disc brakes with adjustable levers provide strong, reliable stopping in all conditions with less hand effort

Detail shot of right hand twist shifter.

Twist Shifting

A twist shifter lets kids change gears easily with a simple motion for smooth, controlled riding

Detail shot of tread on Schwalbe all-terrain tires.

All-Terrain Tires

Grippy tires with fast-rolling tread provide traction on pavement and dirt without slowing riders down

Detail shot of Woom Explore bike from side profile view.

Child-Specific Frame

Kid-specific geometry with a slightly extended riding position improves comfort, stability, and control on longer rides

Detail shot of Woom Explore bike handlebar adjustment markers.

Dialed Fit System

ABC markings on the stem and seatpost make it easy to adjust and maintain the correct fit as kids grow

Find The Right Size

Kid riding Wom Explore 4 bike down a dowtown walkway with his family following behind in the background.

6–8 years

20" wheels

woom Explore 4
Kid riding Wom Explore 4 bike down a paved road trhough a park with his family following behind in the background.

7–11 years

24" wheels

woom Explore 5
Kid riding Wom Explore 6 bike down a paved road with the sun shining in the background.

10–14 years

26" wheels

woom Explore 6

Geometry & Size Chart

Gif rotating trhough geo chart graphic for Woom Explore 4 bike.

Size chart for Woom explore 4, 5, and 6 models.

Complete Your Setup

Tiny rider on a balance wearing superhero cape being pushed by an adult running alongside them.

Made To Grow With Every Ride

woom started in a Vienna garage when two bike‑obsessed dads reimagined kids’ bikes from the ground up, engineering superlight, child‑specific designs that turned first wobbles into real, joyful riding. Today their award‑winning lineup evolves with kids, moving from tiny first bikes to more advanced models that keep pace as skills, confidence, and ride ambitions grow.

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