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woom OFF AIR 4

Profile view of the woom OFF AIR 4 mountain bike for children aged 6 years and up.
Child-specific geometry
Side front view of the woom OFF AIR 4 mountain bike for children aged 6 years and up.
From the age of 6 and up
Detailed view of the front Schwalbe mountain bike tire on the woom OFF AIR 4 children's mountain bike.
Premium suspension fork
Detailed view of the flip-flop stem on the woom OFF AIR 4 children's mountain bike.
Height-adjustable stem
Detailed view of the saddle on the woom OFF AIR 4 children's mountain bike.
Ergonomic saddle
Detailed view of the front disc brake on the woom OFF AIR 4 children's mountain bike.
Powerful disc brakes
Detailed view of the SRAM X5 rear derailleur on the woom OFF AIR 4 children's mountain bike.
Smooth shifting from SRAM
Detailed view of the right-hand grip and trigger shifter on the woom OFF AIR 4 children's mountain bike.
Child-specific MTB grips
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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.

Almost sold out - don't hang around!
OFFOFF AIR
Colour: terra coppa
Free returns incl. VAT plus shipping 4.399,00 PLN
  • Free Returns
  • Free Shipping €99+
  • Two-year Warranty
Size: 20″
Weight: 9,2 kg (20,3 lb)
Top features: Child-specific geometry, air-sprung suspension fork, ergonomic saddle, disc brakes, tubeless-ready wheels, flip-flop stem
Age: 6 – 8 Years
Height: 118 - 130 cm (46 - 51 in)
Find the right bike

The woom OFF AIR is for…

… fearless trailblazers ready to move mountains.

Close-up of the head tube and frame of a copper-colored woom OFF AIR mountain bike.Superlight frameAluminium frame for off-road outings with improved stability and top handling. 
Close-up of the black suspension fork and front wheel on a woom OFF AIR mountain bike.Premium suspension forkFully tunable for ultimate comfort and control on even the toughest terrain.
Close-up of the black saddle and rear tire on a copper-colored woom OFF AIR mountain bike.Ergonomic contact pointsAge-appropriate MTB saddle and profiled handlebar grips with all-terrain pedals.
Close-up of the rear derailleur and cassette on a black woom OFF AIR mountain bike frame.Precise shiftingEasy-to-use SRAM X5 rear derailleur with nine gears for smooth shifting. 
Close-up of the silver disc brake rotor on the front wheel of a woom OFF AIR mountain bike.Reliable disc brakesComfortable to use and teamed with easy-reach brake levers for maximum control.
Close-up of the Schwalbe mountain bike tire with knobby tread on a woom OFF AIR.Grippy tubeless-ready MTB tyresDurable Schwalbe MTB tyres with low-rolling resistance and superior grip.
Close-up of the black stem and handlebars on a woom OFF AIR mountain bike.Lightweight flip-flop stemAdjustable and made of forged aluminum for robust reliablity without the weight.

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.

Specifications

Frame

  • 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

Gears

  • 9-speed gearing
  • SRAM X5 trigger shifter
  • SRAM X5 rear derailleur

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

Wheels

  • 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

Headset

  • Fully integrated 1 1/8″ – 1″ headset
  • Sealed industrial-grade bearings

Tires

  • 20 x 2.25" Schwalbe Rocket Ron
  • with ADDIX SPEED rubber compound and Tubeless Easy technology
  • Tubeless-ready
  • Presta valves

Stem

  • Forged aluminum
  • CNC-machined
  • Handlebars attached via two clamps
  • +/-15° flip-flop design to adjust handlebar height
  • Length: 50 mm

Saddle

  • MTB-specific saddle
  • Trail-ready design
  • Ergonomic and age-appropriate design to fit the rider's pelvis
  • Side protection to lean against walls

Handlebars

  • Wide, lightweight aluminum bars with tapered ends
  • Width: 570 mm
  • Rise: 20 mm

Seatpost

  • 27.2 x 250 mm
  • Anodised aluminum seatpost with insertion marks that indicate the minimum insertion depth

Grips

  • Child-friendly thanks to small diameter
  • Ultra comfortable with reinforced contact surface for palms
  • 100% silicone for maximum grip
  • Clamped design to eliminate twisting

Seatpost clamp

  • Quick-release aluminum seatpost clamp
  • Extra-long quick-release lever, easy to operate requiring minimal strength
  • No risk of turning and/or twisting

Drivetrain

  • 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

Brakes

  • Hydraulic disc brakes by Promax
  • Disc diameter (front/back): 160/140 mm
  • Ergonomic brake levers designed for children's hands

Included tools

  • 4 mm hex key for stem
  • 8 mm hex key for front wheel and pedals

Weight

  • 9.2 kg (without pedals)

Weight limit

50 kg (maximum combined weight of bicycle, rider and cargo)

Colors

  • black
  • terra coppa

Shipping dimensions

112 x 64 x 23 cm

Geometry

What's in the box?

Our woom bikes don't come with any additional accessories. You need to add optional extras like kickstands and mudguards on our equipment page.

If your child plans on cycling on public roads and streets, their bike may need to meet certain standard requirements before it can be considered legal in your country of residence. In many countries, bikes must be equipped with a bike bell, front and rear lights, and wide-angle Z reflectors. As rules for cyclists and their equipment vary from country to country, find out about the regulations applicable to riding a woom bike in road traffic in your country or region, particularly regarding the use of lights, reflectors and other obligatory safety equipment.

Guarantee information

Our standard 2-year warranty applies to the frame and components automatically from the day you purchase your woom bike. Members of our woom Riders Club can extend the warranty on aluminum frames, rigid forks, handlebars, stems and cranks to 10 years for free by registering their bike within 9 weeks of buying it.

Click here to join the woom Riders Club.

Click here to find out more about our extended warranty and to read the full terms and conditions.

Legal right to cancel goods & services

assembly

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Find the perfect woom bike for your child

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.

€999.00
6 – 8
Years
46 - 51 in
118 - 130 cm
Size 20 inches
9,2 kg
20,3 lb
View details
woom GO 3

The superlight bike with 16″ wheels and a safety-conscious design for kids aged 4 and up.

€499.00
4 – 6
Years
41 - 47 in
105 - 120 cm
Size 16 inches
5,4 kg
11,9 lb
View details

Simple assembly for simple rides

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.

Assembly instructions

Instructions for useService & Info

Ratings & Reviews

4.60Based on 8 reviews
Satisfied

Great bike, fits like a glove and moves with the child. But it came with too few spacers so the headset was loose. Fortunately, my husband worked as a bike mechanic and immediately noticed the defect. Woom has compensated us in an accommodating manner. What's a pity is that it's too wide for s follow-me.

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2 people found this helpful
Was this review helpful?

Always impressed by the quality with Woom. We have the Go 3 Automagic as well. The bike is light weight, brakes feel great. Suspension is dialed in appropriately for their weight. The copper color also looks fantastic in person. It’s expensive but the quality is as great if not better than my $1200 cannondale hardtail mtb. For anyone who likes to bike a lot I think it’s well worth the price!

1 person found this helpful
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Top bike

So our child absolutely enjoys it! The price may be a bit excessive, but okay. Built-in components are really good. I think it's a shame that there are no original fenders for it!

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Woom Off Air 5 - absolutely brilliant

We bought the woom 5 for our son. It is well thought out down to the last detail — light, sturdy, safe. As a former cyclist, I immediately see what's right here: Geometry, brakes, sitting position — everything is neatly intertwined. You can tell that there were people at work who take children seriously. The service was also quick and friendly. A product that delivers what it promises.

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Woom Off Air 4

Our son loves the Woom Off Air and gets along great with it. Top workmanship and appearance. Dispatch and delivery went smoothly. Unfortunately, there is a star deduction for the very high price.

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2 people found this helpful
Was this review helpful?

My son rides this bike and is super happy with it - that's why we've been cycling a lot more often lately. Whether just to the outdoor pool or along the dirt roads and hills in the surrounding area. He enjoys both. Clear recommendation!

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The Best Bike Ever

Great air suspension great tires and every thing about this bike is just so so good but just maybe a little bit over priced but that doesn’t make the bike worse even though I don’t have it does not mean I can’t love it

4 people found this helpful
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