Popup schließen
woom off 4
woom off 4
woom off 4
woom off 4
woom off 4
woom off 4
woom off 4
woom off 4
woom off 4
woom off 4
woom off 4
woom off 4
Zoom Icon

OFF

Bike   20"  •  17.2 lbs
Child   6 - 8 years  •  46" – 51"
$ 669.00
ships same or next business day
Shipping free of charge to USA customers
OFF

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.

    Size 20″
    Weight 17.2 lbs
    Age 6 – 8 years
    Size 46” – 51″
    Available editions
    OFF / ORIGINAL
    Get out and explore

    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.

    OFF

    Bike geometry

    • A Tire / Wheel 20“
    • B Cockpit / Handlebar Reach 30.3“
    • C Steering Angle 68°
    • D Top Tube Horizontal 18”
    • E Wheelbase 33“
    • F Seat Tube Angle 70°
    • G Minimum Saddle Height 23.9"
    • H Maximum Saddle Height 29.5"
    • I Crankarm Length 4.33“
    • J Handlebars adjustability Angle +/-15°; Height +/- 0.47″

    OFF

    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
    Fork
    • Light carbon fork
    • 1″ – 1 1/8″ baby taper shaft
    • 100 x 15 mm through axles
    • Post mount for disc brake
    Headset
    • Fully integrated 1″ – 1 1/8″ headset
    • Sealed industrial bearings
    Stem
    • Forged aluminum
    • CNC-machined
    • Handlebars attached via two clamps - +/-15° flip-flop design to adjust handlebar height
    • Length: 50 mm
    Handlebars
    • Wide, ergonomically adapted and lightweight aluminum bars for more control
    • Sandblasted and silver anodised
    • Width: 580 mm
    • Rise: 20 mm
    Grips
    • Child-friendly thanks to small diameter
    • 100% silicon for maximum grip
    • Non-toxic
    • Screwed-in end plugs
    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
    Gears
    • 9 speeds
    • SRAM trigger shifter
    • SRAM X5 derailleur
    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
    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 for easy filling at any gas station
    Saddle
    • Ergonomically designed to fit children's anatomy
    • Non-toxic
    • Side protection to lean against walls
    Seatpost
    • 27.2 x 250 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
    Weight
    • 17.2 lbs (without pedals)
    Colors
    • black
    Shipping dimensions
    • 45 x 26 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.

    Customer Reviews

    Based on 4 reviews Write a review