The newly upgraded 20" woom OFF AIR 4 will take its Rider beyond the beginning stages of their mountain biking journey. Stable, responsive, and equipped with a high-performance front suspension system, durable components, and tubeless-compatible rims and tires, it 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.
Frame material: lightweight, high-quality 6061-T6 aluminum with butted and hydroformed tubes
Easy-access low top tube to assist dismounting
Long wheelbase and low center of gravity to aid balancing
Ergonomic brake levers designed for a child’s hands
Bike weight: 20.9 lbs
Max weight: 110 lbs combined weight of the Rider and cargo
4 mm hex key for the stem and seatpost clamp
8 mm hex key for the front wheel and pedals
45 x 26 x 9”
Lightweight Aluminum Frame
The ultralight aluminum frame with butted hydroformed tubes has a long wheelbase, sporty geometry, and a slack steering angle. The bend in the top tube makes it easy to dismount quickly in any situation.
Riders are comfortable even on the bumpiest terrain thanks to the high-quality suspension fork, which can be adjusted to the Rider’s weight. With adjustable compression and rebound damping, the fork can be tuned for the terrain and the day’s conditions. Plus its lock-out function is a bonus on climbs or flat roads. Whether conquering long days on the trail or taking on an off-road shortcut, good times are right around the bend!
Ergonomic Contact Points
Comfort is important for the riding experience, and that's why the contact points on our bike are made specifically for kids. woom’s custom-sized saddles are unique to each model and designed to accommodate the biomechanics of young Riders. The tapered handlebar ends and custom grips are ergonomically designed for kids’ hands, with off-road riding in mind. The pedals are durable, reflective, and feature slip-resistant pins for extra traction.
Thanks to its flip-flop design, the stem can be turned over and mounted upside down to adjust the handlebar height, helping assure the perfect hand position and fit. The quick-release seatpost clamp allows the saddle to be adjusted with ease while remaining secure.
The precise and easy-to-operate SRAM X5 gear system has nine gears suitable for a wide range of gradients thanks to 28 teeth in the front and an 11-32 cassette in the back.The easy-to-use SRAM trigger shifter allows Riders to shift smoothly and reliably through the gears using their thumb and index finger.
Innovative Braking System
With their excellent modulation combined with special brake levers designed for a child’s hands, the hydraulic disc brakes increase safety and control in all situations, including on rough terrain and in wet conditions.
The high-quality Schwalbe mountain bike tires with ADDIX SPEED rubber compound offer an ideal combination of low-rolling resistance, maximum grip, good shock absorption, and excellent durability. Together, the OFF rims and Schwalbe tires are ready to be set-up as a tubeless system.
Your OFF-road adventure can begin shortly!
In just a few steps, your woom OFF will be ready for its first ride. Check out this video to find out exactly what to do.
If you buy a product directly from us that does not meet your expectations for any reason, you can return it within 30 days of the purchase — no questions asked. We will refund the full cost of the product and pay to have it shipped back to woom. Please note: We are unable to refund the original shipping cost from when you first purchased the product. The refund for the cost of the product and return shipping cost will be processed within 5-7 business days upon receiving the shipment.
If you are returning a product, please initiate a return by clicking the link below. Please read through the following tips if you are returning multiple items or upcycling to ensure your return process goes as smoothly as possible. Thank you!
Keys to Success
If you are returning a combination of any of the following items that cannot fit in the same box, please do this in 2 separate returns. Items include: Any model bike, helmet, rack, freewheel, or fenders. For example, if you are returning a woom bike and helmet/large accessory, one return would contain the bike, and the other return would contain the helmet/ large accessory.
The same rule applies if you are returning multiple bikes. Please do a separate return for each bike.
Please ensure you are choosing the correct reason for return in order to get the correct return label.