Woom 4 Original Kids Bike (20" 7-Speed)
Gear it up!
The woom 4 introduces children aged six years to the world of gear-shifting. The bike's seven speeds in combination with the easy-to-operate twist shifter expand the bike's range of use and increase the child's mobility. Whether they want to ride their bikes into the woods or up hills – the new-found freedom of gears make longer adventures on two wheels child's play.
Specifications
Frame
- Made 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
Wheels
- Ultralight 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
Tires
- 20 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
Stem
- Lightweight 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
Handlebars
- Wide, ergonomically adapted, light aluminum bars offer more control
- Sandblasted and black anodized
- Width: 54 cm
Grips
- woom 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
Drive
- Lightweight, forged 4.3" (110 mm) aluminum cranks with narrow tread (Q-factor)
- Narrow-wide chainring with 28 teeth
- Cassette with 11-28 teeth
- Narrow, flat platform plastic pedals
- Sealed cartridge
Gears
- 7 speeds
- microSHIFT MS29 twist shifter
- microSHIFT M21SS rear derailleur
Fork
- Light unicrown fork made out of aluminum
- 1″ shaft
- Generous trail angle for easy handling
Headset
- Fully-integrated 1″ headset
- Sealed industrial bearings
- Integrated ahead clamp
Seat
- Ergonomically designed to fit children's pelvis
- Non-toxic
- Side protection to lean against walls
Seatpost
- Anodized aluminum seatpost
- Minimum insertion point marked, plus integrated guide in seat tube
Seatpost clamp
- Secure aluminum seatpost clamp eliminates risk of turning/twisting
- Extra-long quick-release skewer makes it easier for kids to release and close
Brakes
- Two 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
Enclosed tools
- 15 mm spanner for pedals
- 5 mm hex key for stem
Colors
- woom Red, Sky Blue, woom Green, Sunny Yellow, Purple Haze
Weight
- 7.7 kg / 16.9 lbs (without pedals)
Weight limit
- 155 lbs (70 kg)
Shipping Details
- Box dimensions: 43.7” x 23.2” x 6.9”
Geometry
| A | Wheel / Tire size | 20" | F | Wheelbase | 825 mm |
| B | Cockpit / Grip height | 745 mm | G | Crank length | 110 mm |
| C | Steering angle | 68° | H | Seattube angle | 71.5° |
| D | Medium standing height | 21.65" (550 mm) | I | Minimum Seat Height | 21.65" (550 mm) |
| E | Horizontal toptube length | 430 mm | J | Maximum Seat Height | 27.6" (700 mm) |
Assembly Instructions
In this video, you'll find comprehensive instructions on assembling your woom 4.
Guarantee
Inspiring children to love riding their bikes is our mission at woom. That's why we guarantee the premium quality of every bike down to the last detail with innovative technology and long-lasting materials.
We have full confidence in our bikes, which is why we offer a 10-year warranty on the aluminum frames, rigid forks, bars and stem once you've registered online.
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My kid loves this bike.
So far it’s a great bike. My kid has been riding it whenever she gets a chance and does really good on it. Her other bike was a bike shop bike and had pedal brakes and she never was really able to ride it but with the woom she started riding really quick. I know some reviews have said the grip shift can have issues but so far our shifter has been working fine.
United StatesGreat bike
Light weight and confidence inspiring!
Great engineering
Wonderful bike. Super lightweight and VERY well made with quality components. Brakes are easy to use by a child and the 8 gears change smoothly. Tires are great for city/light trail duty.
Woom 4 Bike
Very fast shipping.
Excellent Bike & Equally Matched Service
Bike goes together easily and great transition from bike with coaster brakes. Great quality.
Wish Woom made an adult version
Quick response from Ready, Set, Pedal! (& Woom) for a minor customization. Terrific bike (Woom 4). The kid picked up on shifting gears in no time and can climb hills the we were pushing him up last week on a standard 1-spd bike. Easier to get on & off. V-brakes work well. Light, well tuned little machine. Love it. Looking forward to miles and miles on the C&O with the kid. Wish Woom made one my size!
Great product, great service
I am very satisfied with the bike and service I received from Pedal! Ready set.