woom bike mountainbike WOOM OFF/ OFF AIR 4 20" Pedal Bike – WeeBikeShop
SKU: 40471060471
woom bike mountainbike

woom bike mountainbike WOOM OFF/ OFF AIR 4 20" Pedal Bike – WeeBikeShop

$24.94 $27.71
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USA
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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Description

woom bike mountainbike WOOM OFF/ OFF AIR 4 20" Pedal Bike – WeeBikeShopWoom OFF 4 Get out and explore The 20" woom OFF 4 is the perfect first mountain bike for kids age 6 8 years and height 46 51 inches. Whether they're taking on the pump track or exploring forests and fields, this superlight and sturdy bike will help them progress in their mountain biking journey. With high quality components and tubeless compatible rims and tires, the woom OFF 4 offers exceptional value in its category. Don't miss out on this

Woom OFF 4

Get out and explore 

The 20" woom OFF 4 is the perfect first mountain bike for kids age 6-8 years and height 46-51 inches. Whether they're taking on the pump track or exploring forests and fields, this superlight and sturdy bike will help them progress in their mountain biking journey. With high-quality components and tubeless-compatible rims and tires, the woom OFF 4 offers exceptional value in its category. Don't miss out on this opportunity to inspire and empower your young rider!

Woom OFF Air 4 comes with front suspension, 9 gears and disc brakes designed for children aged 6 years and over.

Geometry:

Tire/Wheel  20"
Handlebar height   31.5"
Steering Angle   68°
Top Tube Horizontal    18.1"
Wheelbase   33.5"
Seat Tube Angle  70°
Minimum Saddle Height   22.8"
Maximum Saddle Height  28.7"
Crankarm Lenght  4.33"
Handlebars adjustability   Angle +/-15°; Height +/- 0.47″

Specification

Frame
Frame material: lightweight, high-quality 6061 T6 aluminum with butted and hydroformed tubes.
20″ wheels
Sporty handling: an easy-access low top tube, low centre of gravity and long wheelbase provide good balance and make for a fun, safe riding experience
Fork
Light carbon fork
1″ – 1 1/8″ baby taper shaft
100 x 15 mm through axles
Post mount for disc brake
Gears
9 speeds
SRAM trigger shifter
SRAM X5 derailleur
Headset
Fully integrated 1″ – 1 1/8″ headset
Sealed industrial bearings
Stem
Forged aluminum
CNC-machined
Handlebars attached via two clamps - +/-15° flip-flop design to adjust handlebar height
Length: 50 mm
Handlebars
Wide, ergonomically adapted and lightweight aluminum bars for more control
Sandblasted and silver anodised
Width: 580 mm
Rise: 20 mm
Grips
Child-friendly thanks to small diameter
100% silicon for maximum grip
Single-clamp grip to prevent twisting
Safety zone: extra rubber on the palm-facing portion of the grip for added comfort
Drive
Lightweight, forged aluminum, 4.3" (110 mm), kid-specific cranks with narrow tread (Q-factor)
Narrow-wide chainring with 28 teeth in the front
assette with 11-32 teeth in the back
Flat pedals made from fiber-reinforced nylon
Chromoly axle and sealed, industrial ball bearings
Brakes
Hydraulic disc brakes from Promax
Disc diameter front/back: 140/140mm
Ergonomic brake levers designed for children's hands
Wheels
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
Tires
20 x 2.25″ 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
Saddle
Ergonomically designed to fit children's anatomy
Side protection to lean against walls
Seatpost
27.2 x 250 mm
Anodised aluminum seatpost with insertion marks that indicate the minimum insertion depth
Seatpost clamp
Quick-release seatpost clamp for easy adjustments
Enclosed tools
4 mm hex key for stem and seatpost clamp
8 mm hex key for front wheel and pedals
Bike Weight
Bike weight: 18.5 lbs | OFF Air Bike weight: 20.9 lbs.
Max weight: 110 lbs combined weight of the Rider and cargo
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 40471060471

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    4.1 ★★★★★
    Based on 997 reviews
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    M
    Verified Purchase
    Mary Freeman
    Port Orchard, US
    ★★★★★ 5
    amazing
    Color: Large Set of 4
    good buy worked well
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 13, 2026
    S
    Verified Purchase
    Steve
    Chelsea, US
    ★★★★★ 4
    3.5, Not 3.0
    Color: Medium Set of 6
    These balls were almost exactly what I needed. I was replacing my boy’s favorite ball, which is the 3” squeaky, spikey ball that fits in the chuck it launcher. Unfortunately I saw the shiny object next to it and because there were SIX balls and a dollar less, I failed to see that these are 3.5” balls instead of 3”…. Great balls but no fitty in the slingy. Buyer beware. No chuck it no problem. Save a buck.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 9, 2026
    H
    Verified Purchase
    HollisHoHo
    Bozeman, US
    ★★★★★ 5
    MY CHIHUAHUA LOVES THESE BALLS!!
    Color: Samll Set of 8
    My little chihuahua, BamBam, is addicted to balls, especially little balls that squeak! However, any balls that have material on them, BamBam will tear them apart, swallow the material and then get an upset tummy! These balls saved the day! BamBam LOVES them & she cannot tear them apart! They hold up so well! No matter how much BamBam plays with them, they keep squeaking away!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on July 15, 2025
    L
    Verified Purchase
    Laurens springerslng
    Bozeman, US
    ★★★★★ 5
    Great thick squeaky ball
    Color: Large Set of 2
    These are good thick rubbery squeaky balls. My boy loves them! He's 75lbs. Strong chewer. I hav hard time squeezing to squeak, but he doesn't... He loves it!!!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 24, 2026
    G
    Verified Purchase
    g a ross
    Whiting, US
    ★★★★★ 5
    Squeaky ball
    Color: Large Set of 4
    Perfect squeaky ball. Dogs love them. I love that they're durable and their thickness aids their durability. My Great Dane will play alone for hours with a ball.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 20, 2025

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