WOOM
Woom OFF AIR 4
Kids bike Woom OFF AIR 4
The ultralight and durable 20″ mountain bike with front suspension, 9 gears and disc brakes designed for children aged 6 years and over (115-130cm).
Welcome to the world of flow!
The next-generation woom OFF AIR 4 is an ultralight, durable hardtail mountain bike with serious all-terrain capabilities for kids aged six and up. With high-quality front suspension and powerful disc brakes, it teams maximum comfort with full control for the ultimate performance on XC trails, gravel tracks, tarmacked lanes and beyond.
Superlight Frame
The superlight aluminum frame has capable off-road geometry with a long wheelbase and slack head angle for improved stability and smooth, responsive handling. Extra confidence comes from the kink in the top tube, which makes it easy to dismount quickly in any situation.
Premium suspension fork
Comfort and control on the bumpiest terrain is a given thanks to the fully tunable suspension fork, which can be adjusted to the rider’s weight. With adjustable compression and rebound damping, the fork can be tuned precisely for any terrain or conditions and features a lock-out function that basically switches off the suspension when not needed – meaning full fun on the trails and a faster ride up hills or on the way home!
Ergonomic contact points
The age-appropriate MTB saddle and ergonomically profiled handlebar grips add comfort, while the hard-wearing platform pedals with metal pins provide the necessary grip for all-terrain riding.
Precise shifting
The precise and intuitive SRAM X5 drivetrain has nine gears and a wide gear range thanks to the 28-tooth chainring up front and an 11–32 cassette at the rear. The easy-to-operate trigger shifter operates smoothly and reliably to make light work for children’s thumbs.
Reliable disc brakes
Easy-to-modulate disc brakes are teamed with child-specific, reach-adjustable brake levers to provide maximum stopping power and control in every situation including steep slopes and wet conditions.
Grippy tubeless-ready MTB tires
High-quality Schwalbe mountain bike tires combine low rolling resistance with superior grip and proven durability. With Tubeless Easy technology and tubeless-ready rims, it’s a straightforward transition to go tubeless and benefit from added comfort and grip.
Lightweight flip-flop stem
Specially developed from forged aluminum, this stem pairs the ultimate stiffness with the lowest possible weight. Thanks to its flip-flop design, there’s the option to raise the height of the bars simply by inverting it.
| Frame | - | lightweight, high-quality 6061 T6 aluminum with butted and hydroformed tubes. 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 |
| Wheel size | - | 20" |
| Gears | - | 9 (1x9) |
| Suitable for length | - | 115-130cm |
| Suspension fork | - | Aluminum air-sprung suspension fork from RST; Rebound and compression damping adjustment, plus lockout function; 60 mm travel; 1 1/8″ – 1″ baby taper steerer tube; 100 x 15 mm thru-axle; Post mount for disc brake |
| Brake system | - | Hydraulic disc brakes by Promax; Disc diameter (front/back): 160/140 mm. Ergonomic brake levers designed for children's hands. |
| Rear derailleur | - | SRAM X5 |
| Shifters | - | SRAM X5 |
| Crankset | - | Lightweight, forged 110 mm aluminium cranks with narrow tread (Q-factor). Narrow-wide chainring with 28 teeth in the front |
| Cassette | - | 11-32; 9 speed |
| 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. 50 mm |
| Handlebar | - | Wide, lightweight aluminum bars with tapered ends; Width: 570 mm; Rise: 20 mm |
| Grips | - | Child-friendly thanks to small diameter. 100% silicone for maximum grip. Ultra comfortable with reinforced contact surface for palms. Clamped design to eliminate twisting. |
| Rims | - | Lightweight, tubeless-ready aluminum rims from Alexrims |
| Front hub | - | Aluminum hubs with sealed industrial bearings. Through axles for maximum torsional strength 100x15mm |
| Rear hub | - | Aluminum hubs with sealed industrial bearings Through axles for maximum torsional strength 135x12mm |
| Tyres | - | 20 x 2.25″ Schwalbe Rocket Ron with ADDIX SPEED rubber compound and Tubeless Easy technology |
| Saddle | - | MTB-specific saddle; Trail-ready design; Ergonomic and age-appropriate design to fit the rider's pelvis; Side protection to lean against walls |
| Seat post | - | 27.2 x 250 mm. Anodised aluminum seatpost with insertion marks that indicate the minimum insertion depth |
| Pedals | - | Platform pedals made from fiber-reinforced nylon with metal pins for added grip. Cr-Mo axle and sealed industrial-grade ball bearings. |
| Weight | - | 9,2 kg |
*Because of ongoing problems in the delivery chain, the bike can be delivered with modifications.
Outside of Estonia we send bikes only in bike box and it will need an assemble by client.
Average bike order processing time is 2-3 business days + shipping.