Woom OFF

Availability: PRE-ORDER

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.

Head for the mountains!

The woom OFF 5 gives children aged seven years and older a superlight and durable mountain bike perfect for challenging rides on tough terrain. The hydraulic disc brakes make it easy for children to negotiate even steep descents without getting tired. Full speed uphill, full control downhill!

Follow the call of the trails

The woom OFF 6 offers children aged ten years and older a superlight and durable mountain bike which they can use to rock every trail. Tough terrain is no longer an intimidating obstacle but instead a fun challenge to be overcome. The special chainring ensures that the chain stays in place no matter how rough things get. A love of cycling becomes a passion for mountain biking.


Size 26″
Weight 20.5 lbs
Age 10 – 14 years
Size 55” – 65”
Available editions
Follow the call of the trails
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.
Bike geometry

A Tire / Wheel 26“
B Cockpit / Handlebar height 37.8"
C Steering angle 69°
D Top tube horizontal 22”
E Wheelbase 42“

F Seat tube angle 71°
G Minimum saddle height 30.9”
H Maximum saddle height 38.4”
I Crank length 5.90“
J Handlebars adjustability Angle +/-15°; Height +/- 0.47″


Frame material: lightweight, high-quality 6061 T6 aluminum with butted and hydroformed tubes
26″ 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


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


Fully integrated 1″ – 1 1/8″ headset
Sealed industrial bearings


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


Wide, ergonomically adapted and lightweight aluminum bars for more control
Sandblasted and silver anodised
Width: 680 mm - Rise: 20 mm


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


Lightweight, forged 150 mm aluminum cranks with narrow tread (Q-factor)
Narrow-wide chainring with 28 teeth in the front
Cassette with 11-36 teeth in the back
Flat pedals made from fibre-reinforced nylon
Cr-Mo axle and sealed industrial ball bearings


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


9 speeds
SRAM trigger shifter
SRAM X5 derailleur


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)
28 G14 spokes, double-crossed spoking
Aluminum nipples


26 x 2.35″ 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 for easy filling at any gas station


Ergonomically designed to fit children's pelvis
Side protection to lean against walls


27.2 x 300 mm
Anodised aluminum seatpost with insertion marks that indicate the minimum insertion depth

Seatpost clamp

Made from aluminum
No risk of turning and/or twisting

Enclosed tools

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


20.50 lbs (without pedals)



Shipping dimensions

57 x 30.7 x 9 inches

Bike Information

Max weight: 175 lbs (80 kg). At woom bikes USA, we reserve the right to make changes to the information on our website at any time. Weights are based on time of information publication and are up-to-date. Weights may vary slightly, as we are always improving our bikes.

Questions about assembly?

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