Woom

Woom OFF AIR 4

Welcome to the world of flow!

The woom OFF AIR 4 is an ultralight and durable 20" hardtail mountain bike, built for young riders aged 6 to 8 years and 118 - 130 cm tall. Weighing 9.2 kg, it features an air-sprung suspension fork for a smooth ride, 9 gears for tackling varied terrain, and disc brakes for powerful stopping. Designed for adventure, it boasts child-specific geometry, an ergonomic saddle and grips, tubeless-ready wheels, and a flip-flop stem, delivering ultimate comfort, control, and performance on any trail.
Price
€989,00
€989,00
Color
Available Out Of Stock
14 Days Return Policy
Woom OFF AIR 4
  • Overview
  • Specifications
Made for children, made for adventure

Bike life begins here

safety first

Very cool features

  • Superlight Frame
    The superlight aluminum frame has capable off-road geometry with a long wheelbase and slack steering 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!
  • Durable carbon fork
    Superlight and super stylish – the carbon fork balances maximum stability with minimum weight. Multidirectional carbon fibers ensure plenty of torsional strength when steering and braking. That makes the bike strong and stable even on the roughest terrain.
  • 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 rear derailleur 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, the 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.
Specs

Product Specifications

Frame material: lightweight, high-quality 6061 T6 aluminum with butted and hydroformed tubes
20″ wheels
Confidence-inspiring handling: an easy-access low top tube, low centre of gravity and long wheelbase provide good balance and make for a fun, safe ride
Hard-wearing plastic chainstay protector prevents scratches
Fully integrated 1 1/8″ – 1″ headset
Sealed industrial-grade bearings
Wide, lightweight aluminum bars with tapered ends
Width: 570 mm
Rise: 20 mm
Lightweight forged aluminum cranks
110 mm length, narrow Q-factor
Narrow-wide chainring with 28 teeth
Cassette with 11–32 teeth
Platform pedals made from fiber-reinforced nylon with metal pins for added grip
Cr-Mo axle and sealed industrial-grade ball bearings
50 kg (maximum combined weight of bicycle, rider and cargo)
9-speed gearing
SRAM X5 trigger shifter
SRAM X5 rear derailleur
20 x 2.25" Schwalbe Rocket Ron
with ADDIX SPEED rubber compound and Tubeless Easy technology
Tubeless-ready
Presta valves
27.2 x 250 mm
Anodised aluminum seatpost with insertion marks that indicate the minimum insertion depth
Hydraulic disc brakes by Promax
Disc diameter (front/back): 160/140 mm
Ergonomic brake levers designed for children's hands
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
Forged aluminum
CNC-machined
Handlebars attached via two clamps
+/-15° flip-flop design to adjust handlebar height
Length: 50 mm
Child-friendly thanks to small diameter
Ultra comfortable with reinforced contact surface for palms
100% silicone for maximum grip
Clamped design to eliminate twisting
Lightweight, tubeless-ready aluminum rims from Alexrims
Size: 20″
Aluminum hubs with sealed industrial bearings
Thru-axles for maximum torsional strength (100 x 15 mm front / 135 x 12 mm rear)
20 spokes, double-crossed spoking
Aluminum nipples
MTB-specific saddle
Trail-ready design
Ergonomic and age-appropriate design to fit the rider's pelvis
Side protection to lean against walls
Quick-release aluminum seatpost clamp
Extra-long quick-release lever, easy to operate requiring minimal strength
No risk of turning and/or twisting
9.2 kg (without pedals)
black
terra coppa
tutorials

Assembly instructions

FAQ

Frequently Asked Questions

Woom bikes are designed for kids aged 18 months to 8 years. Check the product specifications to find the right size and recommended age.
We offer a standard 2-year warranty that applies automatically from the day you buy a new woom bike. You need to provide the purchase receipt to make a claim under the warranty. Make sure you keep it somewhere safe.
On a new bike, the Bowden cable is still pretty tight. It will stretch by itself after applying the brakes a few times. If the brakes are too tight, you can easily loosen them by turning the adjustment barrel on the Bowden cable. This will release the tension and open up the brakes. If only one brake pad is rubbing, you can adjust the spring tension on the brake. Our mechanic Tim explains exactly what you need to do in our video about adjusting the brakes.
Ready to upcycle your current woom bike that’s less than three years old? Visit our shop, and we’ll repurchase it for up to 40% of its original price, helping you size up to the next model.
reviews

Our happy clients

5/5

Pro and super friendly. Love the bikes!

Charles
5/5

This bike has been perfect for our 2 year old twin grand sons. It is just perfect for them to ride!

Tonya
5/5

The quality is outstanding and it was easy to put together. I love the look!

Kim
product recommendations

You will also like