Get out and explore!
The woom OFF 4 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.

woom frame
The superlight aluminum frame with butted hydroformed tubes has a sporty geometry, long wheelbase and flat steering angle. The kink in the top tube makes it easy to dismount quickly in any situation.

Fork
Superlight and super stylish – the carbon fork offers maximum stability with minimum weight. Multidirectional carbon fibres ensure plenty of torsional strength when steering and braking. That makes the bike strong and stable even on the roughest terrain.

Brakes
The disc brakes with their excellent modulation combined with special brake levers designed for children's hands increase safety and control in all situations, including on rough terrain and in wet conditions.

Stem
The specially developed stem from forged aluminum guarantees maximum stiffness with minimal weight. Thanks to its flip-flop design it can be turned over and mounted upside down to adjust the handlebar height.

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 a unique riding experience!

Gears
The precise and easy-to-operate gear system allows smooth shifting. The SRAM X5 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.

Tyres
The high-quality Schwalbe mountain bike tyres with ADDIX SPEED rubber compound offer an ideal combination of low rolling resistance, maximum grip, good shock absorption and excellent durability.

Specifications

Frame
Frame material: lightweight, high-quality 6061 T6 aluminum with butted and hydroformed tubes
20" wheels
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

Gears
9 speeds
SRAM trigger shifter
SRAM X5 derailleur

Fork
Light carbon fork
1" – 1 1/8" baby taper shaft
100 x 15 mm through axles
Post mount for disc brake

Wheels
Superlight woom OFF DISCO TEC double-chamber aluminum rims
Aluminum hubs with sealed industrial bearings
Through 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 1/8" headset
Sealed industrial bearings

Tyres
20 x 2.25″ Schwalbe Rocket Ron with ADDIX SPEED rubber compound
Quality MTB tyres with low rolling resistance, maximum grip, good shock absorption and excellent durability
Car-type valves for easy filling at any gas station

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 pelvis
Non-toxic
Side protection to lean against walls

Handlebars
Wide, ergonomically adapted and lightweight aluminum bars for more control
Sandblasted and silver anodised
Width: 600 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
100% silicon for maximum grip
Non-toxic
Screwed-in end plugs

Seatpost Clamp
Made from aluminum
No risk of turning and/or twisting

Drive
Lightweight, forged 110 m aluminum cranks with narrow tread (Q-factor)
Narrow-wide chainring with 28 teeth in the front
Cassette with 11-32 teeth in the back
Flat pedals made from fibre-reinforced nylon
Cr-Mo axle and sealed industrial ball bearings

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

Weight
17.2 lbs (without pedals)

Colours
Happy Mole black

Shipping dimensions
45.28" x 25.59" x 9.06"