Shifting
Mechanical
9 of 321 bicycles with this information use electronic shifting.
woom OFF AIR 4
1 of 3
woom OFF AIR 4
1 of 3
- $1,249
- 60
- 20″
- 9.84
- Aluminum
- Hydraulic disc
Sizes
Size guide- One Size
Components
Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.
Frame and fork
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Frame
Frame material: lightweight, high-quality 6061-T6 aluminum with butted and hydroformed tubes, 20″ wheels, Easy-access low top tube to assist dismounting, Long wheelbase and low center of gravity to aid balancing, Featuring woom-specific molded chainstay protector
Suspension
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Fork
Brakes
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Brakes
Wheels and tires
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Rims
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Tires
Cockpit and contact points
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Grips
Child-friendly because of a small diameter, Single-clamp grip to prevent twisting, Safety zone: extra rubber on the palm-facing portion of the grip for added comfort, 100% silicone for maximum grip
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Handlebar
Wide, ergonomically adapted and lightweight aluminum bars for more control, Tapered end to fit a child’s hand, Sandblasted and silver anodized, Width: 570 mm, Rise: 20 mm
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Headset
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Saddle
Ergonomically designed to fit a child’s anatomy, Streamlined, mountain-bike-specific saddle design, Side protection to lean against walls
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Seatpost
27.2 x 250 mm, Anodized aluminum seatpost with insertion marks that indicate the minimum insertion depth, Quick-release seatpost clamp
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Stem
Forged aluminum, CNC-machined, Handlebars attached via two clamps, Rise/drop: +/-15° with flip-flop design to adjust the handlebar height, Length: 50 mm
Sizes and geometry
Size explorer
Specifications
Frame and fork
- Intended fit
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- Unisex
- Frame material
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- Aluminum
- Bicycle weight
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- 9.84 kg
- 21.7 lb
Suspension
- Suspension configuration
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- Hardtail
- Front travel
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- 60 mm
Wheels and brakes
- Wheel configuration
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- Same size
- Brake type
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- Hydraulic disc
Fit and controls
- Seatpost
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- Rigid seatpost
- Shifting
-
- Mechanical
Additional specifications
- Fork spring
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- Air
- Tire width
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- 2.25″
- Wheel material
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- Aluminum
- Wheel size
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- 20″
Technical analysis
How these figures sit among bicycles of the same class and model year. Context, not a ranking.
Lineup changes
The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.
Differences across 2026 builds
Similar bicycles
Same category, closest configuration.
