The Ultimate Guide to Buying a Kids' Bike
Austin, TX
woom GO 4 Kids' Bike
$639.00
Members get an est. $63.90 in rewards
Designed for kids ages 6 to 8 years old, this woom bike is superlight for easy pedaling. The child-friendly brakes and BMX-style bars help them steer and stop with confidence.
Key Details
Wheel Size
20 inches
Number of Gears
7 gear(s)
- Lightweight aluminum frame
- Superlight aluminum stem and handlebars
- Fully integrated 1 in. headset with sealed bearings
- BMX-style bars
- Ultraslim, child-specific ergonomic and protective handlebar grips
- Child-friendly mini V-brakes
- 7 easy-to-operate gears
- Ergonomic saddle
- Anodized aluminum seatpost
- 20 in. ultralight aluminum wheels
- Schwalbe tires
- Dimensions: 42 x 33 x 9.4 in.
- Recommended for ages 6 to 8 yrs.
- Recommended rider weight: 155 lbs.
- NOTE: Specs and images are subject to change based on component availability
Imported.
This bike comes with Coast to Coast Support, which includes:
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
View all woom Kids' Bikes- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
| Best Use | Cycling |
|---|---|
| Frame | AA 6061 aluminum |
| Step-Through | No |
| Bike Suspension | No Suspension |
| Fork | Aluminum |
| Crankset | woom 18T |
| Bottom Bracket | Square Taper |
| Shifters | microSHIFT Ds45 |
| Rear Derailleur | microSHIFT M21SS |
| Rear Cogs | microSHIFT |
| Number of Gears | 7 gear(s) |
| Brake Type | Rim |
| Brakes | woom mini V-brakes |
| Brake Levers | woom ergo brake levers |
| Rims | woom ultralight aluminum |
| Front Hub | woom Lightweight |
| Rear Hub | woom |
| Wheel Size | 20 inches |
| Tires | Schwalbe Little Joe |
| Tire Width | 1.4 inches |
| Handlebar Shape | BMX Bar |
| Handlebar | woom aluminum bars |
| Stem | woom superlight aluminum |
| Seat Post | Anodized aluminum |
| Saddle | Ergonomic saddle |
| Pedals | woom kids' platform |
| Headset | Fully integrated 1 in. headset with sealed bearings |
| Chain | woom |
| Weight | 17 lbs. 3.2 oz. |
| Bike Weight | Bike weight is based on median size, as sold, or the average of two median sizes. |
| Gender | Kids' |
woom Bikes (253629)
| 20 IN | |
|---|---|
| Height Range | 45" - 51" |
| Effective Top Tube | 17.4 |
| Standover Height | 19.3 |
| Head Tube Angle (degrees) | 68 |
| Seat Tube Angle (degrees) | 72 |
| Wheelbase | 33.1 |
Sizing Notes
Measurements are stated in inches unless otherwise indicated.
How we measure bikes
- Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
- Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
- Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
- Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
- Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
- Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
- Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
- Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
- Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
- Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
- Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
- Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.
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