Name: woom OFF 4 - 00 / black
Brand: woom
SKU: 501010190406
Price: 649.00 EUR
Availability: OutOfStock

Child-specific geometry

From the age of 6 and up

Durable carbon fork

Grippy MTB tires

Adjustable stem

1/5

woom OFF 4

The ultralight, durable 20" mountain bike (model year 2021, first gen) with a carbon fork, 9 gears and disc brakes designed for children aged 6 years and over.

Temporarily out of stock - Join the waitlist below.

1. generation 2. generation

color: black

Delivery time: 5–10 working days incl. VAT plus shipping Plus customs fees where applicable*

Plus customs fees where applicable*

€649.00 €799.00

woom OFF 4

€649.00 €799.00

Out of stock

Size: 20″

Weight: 7.8 kg (17.2 lbs)

Top features: Child-specific geometry, carbon fork, adjustable stem

Age: 6 - 8 years

Height: 118 - 130 cm (3.87 - 4.3″)

Find the right bike

Endless off-road fun!

The first-generation woom OFF 4 (model year 2021) gives children aged six years and older a superlight and durable mountain bike for their first go on the pump track and easy cruising through forests and fields. The kink in the top tube makes it easy to get on and off quickly in any situation, thereby giving kids greater safety out and about on the trails. The perfect introduction to mountain biking.

Frame

Frame material: lightweight, high-quality 6061 T6 aluminum with butted and hydroformed tubes
20″ wheels
Confidence-inspiring handling: low entry, low center of gravity and long wheelbase provide good balance and make for a fun, safe ride

Gears

9 gears
SRAM X5 trigger shifter
SRAM X5 rear derailleur

Fork

Lightweight carbon fork
1 1/8″–1″ baby taper steerer tube
100 x 15 mm thru-axle
Post mount for disc brake

Wheels

Superlight woom OFF DISCO TEC double-chamber aluminum rims
Aluminum hubs with sealed industrial-grade bearings
Thru-axles for maximum torsional strength (100 x 15 mm front/135 x 12 mm rear)
20 G14 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
Quality MTB tires with low rolling resistance, maximum grip, good shock absorption and excellent durability
Car-type valves allow the tires to be pumped up at petrol stations

Stem

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

Saddle

Ergonomically designed to fit children's pelvises
Side protection for leaning against walls

Handlebars

Wide, ergonomically adapted and lightweight aluminum bars for more control
Sandblasted and anodized in silver
Width: 580 mm
Rise: 20 mm

Seatpost

27.2 x 250 mm
Anodized aluminum seatpost with minimum insertion mark

Grips

Child-friendly thanks to small diameter
100% silicone for maximum grip
Screwed-in end plugs

Seatpost clamp

Made of aluminum
Extra-long quick-release lever, easy to operate requiring only minimal strength
No risk of turning and/or twisting

Drivetrain

Lightweight, forged 110 mm aluminum cranks with narrow tread (Q-factor)
Narrow-wide chainring with 28 teeth
Cassette with 11–32 teeth
Platform pedals made from fiber-reinforced nylon
Cr-Mo axle and sealed industrial-grade ball bearings

Brakes

Hydraulic disc brakes by Promax
Rotor diameter front/back: 140/140 mm
Ergonomic brake levers designed for children's hands

Included tools

4 mm hex key for stem and seatpost clamp
8 mm hex key for front wheel and pedals

Weight

7.8 kg (without pedals)

Weight limit

80 kg

Colors

Black

Shipping dimensions

112 x 64 x 23 cm

woom Frame

The superlight aluminum frame with butted hydroformed tubes has impeccable MTB genes with modern geometry, a long wheelbase and a slack head tube angle.

The kink in the top tube makes it easy to dismount quickly in any situation.

woom Carbon Fork

Superlight and super stylish – the carbon fork offers 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.

Brakes

The easy-to-modulate disc brakes ally with the special brake levers designed for children's hands to increase safety and control in all situations, including on rough terrain and in wet conditions.

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.

woom saddle

The saddle is one of the most important points of contact between the child and the bike. It significantly affects the feeling when riding. That is why we have designed our saddle to fit the pelvis of children and give them a slightly stretched riding position. Perfect for getting the most out of their ride!

During a redesign of our products, the security seatpost clamp shown here was replaced with a quick-release seatpost clamp. The result: quick and easy saddle height adjustments – no tools required.

Gears

Smooth shifting comes courtesy of our precise and easy-to-operate transmission. The SRAM X5 drivetrain has nine gears and a wide range 11–32T cassette combined with a 28T chainring up front.

Tires

Built with the ADDIX SPEED rubber compound, the valued Schwalbe mountain bike tires deliver the ultimate performance, uniting a low rolling resistance with superior grip, cushioning and durability.

Trigger shifter

The easy-to-operate SRAM trigger shifter makes light work for children’s thumbs by shifting efficiently through the nine gears with precision.

Sticker Set

Ride in style! Every woom OFF is delivered complete with a set of stickers in four colors. Personalize your rims and top tube to ride in your unique style!

Our woom bikes don't come with any additional accessories. You can find useful extras, including kickstands and mudguards, in our online shop.

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.

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.

If you buy a woom product and are not 100% satisfied, or if you didn't order the right size, you have 60 days to send it back to us free of charge from within the EU for either a refund or an exchange.

This also applies to your new woom bike, even if your child has already ridden it.
We will cover the return shipping costs and either refund the full amount you originally paid or send you a new bike in the requested size.

Everything you need to know about our cancellation policy can be found here.

woom OFF 4

Endless off-road fun!

Specifications

Geometry

Assembly Instructions

Features & Highlights

What's in the box?

Guarantee information

Legal right to cancel goods & services