Woom Off Air 4 20" 9 Speed Kid's Mountain Bike (Recommended for Height 3'10" - 4'3")
Rare AIR
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The newly upgraded Woom Off Air 4 20 Inch 9 Speed Kid's Hardtail Mountain Bike will take its Rider beyond the beginning stages of their mountain biking journey. The Woom Off Air 4 20 Inch is stable, responsive, and equipped with a high-performance front suspension system, durable components, and tubeless-compatible rims and tires.Ā The Woom Off Air 4 20 Inch provides best-in-class value in its category. Off-road capable and kid-tested, this mountain bike was ergonomically designed for growing bodies and developing abilities. The Woom OFF AIR 4 is more than capable on cross-country trails yet, uncompromising on gravel, pavement, or wherever the spirit leads your Rider.
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Ā
Specifications
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Ā
Frame
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- Frame material: lightweight, high-quality 6061-T6 aluminum with butted and hydroformed tubes
- 20ā³ wheels
- Easy-access low top tube to assist dismounting
- Long wheelbase and low center of gravity to aid balancing
- Featuring woom-specific molded chainstay protectorĀ
Ā
Gears
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- 9 speeds
- SRAM X5 trigger shifter
- SRAM X5 rear derailleur
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Suspension Fork
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- RST SPEX hydraulic air suspension fork with 60 mm travel, adjustable compression, and rebound damping, plus lock-out
- 1 ā 1 ā ā³ tapered steerer tube
- 100 x 15 mm thru axle
- Post mount for disc brake
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Wheels
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- Tubeless-compatible Alexrims wheelset
- Aluminum hubs with sealed industrial bearings
- Thru axles for maximum torsional strength (100 x 15 mm front and 135 x 12 mm rear)
- 20 G14 spokes, double-crossed spoking
- Aluminum nipples
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Headset
Ā
- Fully integrated 1 ā 1 ā " headset
- Sealed industrial bearings
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Tires
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- 20 x 2.25ā³ Schwalbe Rocket Ron with ADDIX SPEED rubber compound
- Quality mountain bike tires with low rolling resistance, maximum grip, good shock absorption, and excellent durability
- Presta valves, tubeless conversion ready
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Stem
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- Forged aluminum
- CNC-machined
- Handlebars attached via two clamps
- Rise/drop: +/-15° with flip-flop design to adjust the handlebar height
- Length: 50 mm
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Saddle
Ā
- Ergonomically designed to fit a childās anatomy
- Streamlined, mountain-bike-specific saddle design
- Side protection to lean against walls
Ā
Handlebars
Ā
- Wide, ergonomically adapted and lightweight aluminum bars for more control
- Tapered end to fit a childās hand
- Sandblasted and silver anodized
- Width: 570 mm
- Rise: 20 mm
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Seatpost
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- 27.2 x 250 mm
- Anodized aluminum seatpost with insertion marks that indicate the minimum insertion depth
- Quick-release seatpost clamp
- 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
Ā
Seatpost Clamp
Ā
- Quick-release seatpost clamp for easy adjustments
- Made from aluminum
- Drivetrain
- Lightweight, forged aluminum, 4.3" (110 mm), kid-specific cranks with narrow tread (Q-factor)
- Narrow-wide chainring with 28 teeth in the front
- Cassette with 11-32 teeth in the back
- Flat pedals made from fiber-reinforced nylon
- Chromoly axle and sealed industrial ball bearings
Ā
Brakes
Ā
- Hydraulic disc brakes by Promax
- Rotor diameter front/back: 140/140 mm
- Ergonomic brake levers designed for a childās hands
Ā
- Weight -Ā Bike weight: 21 lbs 11 oz
- Max weight: 110 lbs combined weight of the Rider and cargo
Ā
Enclosed Tools
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- 4 mm hex key for the stem and seatpost clamp
- 8 mm hex key for the front wheel and pedals
Ā
Ā
- Shipping Dimensions - 45 x 26 x 9ā
Original: $999.99
-70%$999.99
$300.00Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Rare AIR
Ā
The newly upgraded Woom Off Air 4 20 Inch 9 Speed Kid's Hardtail Mountain Bike will take its Rider beyond the beginning stages of their mountain biking journey. The Woom Off Air 4 20 Inch is stable, responsive, and equipped with a high-performance front suspension system, durable components, and tubeless-compatible rims and tires.Ā The Woom Off Air 4 20 Inch provides best-in-class value in its category. Off-road capable and kid-tested, this mountain bike was ergonomically designed for growing bodies and developing abilities. The Woom OFF AIR 4 is more than capable on cross-country trails yet, uncompromising on gravel, pavement, or wherever the spirit leads your Rider.
Ā
Ā
Specifications
Ā
Ā
Frame
Ā
- Frame material: lightweight, high-quality 6061-T6 aluminum with butted and hydroformed tubes
- 20ā³ wheels
- Easy-access low top tube to assist dismounting
- Long wheelbase and low center of gravity to aid balancing
- Featuring woom-specific molded chainstay protectorĀ
Ā
Gears
Ā
- 9 speeds
- SRAM X5 trigger shifter
- SRAM X5 rear derailleur
Ā
Suspension Fork
Ā
- RST SPEX hydraulic air suspension fork with 60 mm travel, adjustable compression, and rebound damping, plus lock-out
- 1 ā 1 ā ā³ tapered steerer tube
- 100 x 15 mm thru axle
- Post mount for disc brake
Ā
Wheels
Ā
- Tubeless-compatible Alexrims wheelset
- Aluminum hubs with sealed industrial bearings
- Thru axles for maximum torsional strength (100 x 15 mm front and 135 x 12 mm rear)
- 20 G14 spokes, double-crossed spoking
- Aluminum nipples
Ā
Headset
Ā
- Fully integrated 1 ā 1 ā " headset
- Sealed industrial bearings
Ā
Tires
Ā
- 20 x 2.25ā³ Schwalbe Rocket Ron with ADDIX SPEED rubber compound
- Quality mountain bike tires with low rolling resistance, maximum grip, good shock absorption, and excellent durability
- Presta valves, tubeless conversion ready
Ā
Stem
Ā
- Forged aluminum
- CNC-machined
- Handlebars attached via two clamps
- Rise/drop: +/-15° with flip-flop design to adjust the handlebar height
- Length: 50 mm
Ā
Saddle
Ā
- Ergonomically designed to fit a childās anatomy
- Streamlined, mountain-bike-specific saddle design
- Side protection to lean against walls
Ā
Handlebars
Ā
- Wide, ergonomically adapted and lightweight aluminum bars for more control
- Tapered end to fit a childās hand
- Sandblasted and silver anodized
- Width: 570 mm
- Rise: 20 mm
Ā
Seatpost
Ā
- 27.2 x 250 mm
- Anodized aluminum seatpost with insertion marks that indicate the minimum insertion depth
- Quick-release seatpost clamp
- 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
Ā
Seatpost Clamp
Ā
- Quick-release seatpost clamp for easy adjustments
- Made from aluminum
- Drivetrain
- Lightweight, forged aluminum, 4.3" (110 mm), kid-specific cranks with narrow tread (Q-factor)
- Narrow-wide chainring with 28 teeth in the front
- Cassette with 11-32 teeth in the back
- Flat pedals made from fiber-reinforced nylon
- Chromoly axle and sealed industrial ball bearings
Ā
Brakes
Ā
- Hydraulic disc brakes by Promax
- Rotor diameter front/back: 140/140 mm
- Ergonomic brake levers designed for a childās hands
Ā
- Weight -Ā Bike weight: 21 lbs 11 oz
- Max weight: 110 lbs combined weight of the Rider and cargo
Ā
Enclosed Tools
Ā
- 4 mm hex key for the stem and seatpost clamp
- 8 mm hex key for the front wheel and pedals
Ā
Ā
- Shipping Dimensions - 45 x 26 x 9ā














