Woom

Woom OFF 4

Minimal weight. Maximum fun.

The woom OFF 4 (second generation, 2023 model) is an ultralight and durable 20" mountain bike, built for young riders aged 6 to 8 years and 118 - 130 cm tall. Weighing just 8.1 kg, it features a carbon fork for added strength and agility, 9 gears for tackling varied terrain, and disc brakes for maximum stopping power. Designed with child-specific geometry, an ergonomic saddle and grips, tubeless-ready wheels, and a flip-flop stem, the Woom OFF 4 gives kids total control and confidence on their off-road adventures.

Price
€859,00
€859,00
Color
Available Out Of Stock
14 Days Return Policy
Woom OFF 4
  • Overview
  • Specifications
Made for children, made for adventure

Bike life begins here

safety first

Very cool features

  • Superlight Frame
    The superlight aluminum frame has capable off-road geometry with a long wheelbase and slack steering angle for improved stability and smooth, responsive handling. Extra confidence comes from the kink in the top tube, which makes it easy to dismount quickly in any situation.
  • Durable carbon fork
    Superlight and super stylish – the carbon fork balances 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.
  • Ergonomic contact points
    The age-appropriate MTB saddle and ergonomically profiled handlebar grips add comfort, while the hard-wearing platform pedals with metal pins provide the necessary grip for all-terrain riding.
  • Precise shifting
    The precise and intuitive SRAM X5 rear derailleur has nine gears and a wide gear range thanks to the 28-tooth chainring up front and an 11–32 cassette at the rear. The easy-to-operate trigger shifter operates smoothly and reliably to make light work for children’s thumbs.
  • Reliable disc brakes
    Easy-to-modulate disc brakes are teamed with child-specific, reach-adjustable brake levers to provide maximum stopping power and control in every situation including steep slopes and wet conditions.
  • Grippy tubeless-ready MTB tires
    High-quality Schwalbe mountain bike tires combine low rolling resistance with superior grip and proven durability. With Tubeless Easy technology and tubeless-ready rims, it’s a straightforward transition to go tubeless and benefit from added comfort and grip.
  • Lightweight flip-flop 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.
Specs

Product Specifications

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 center of gravity and long wheelbase provide good balance and make for a fun, safe ride
Hard-wearing plastic chainstay protector to prevent scratches
Fully integrated 1 1/8″ – 1″ headset
Sealed industrial-grade bearings
Wide, lightweight aluminum bars with tapered ends
Width: 570 mm
Rise: 20 mm
Lightweight forged aluminum 110 mm cranks with
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
8.1 kg (without pedals)
9-speed gearing
SRAM X5 trigger shifter
SRAM X5 rear derailleur
20 x 2.25" Schwalbe Rocket Ron
ADDIX SPEED rubber compound and Tubeless Easy technology
Tubeless-ready
Presta valves
27.2 x 250 mm
Anodized aluminum seatpost with minimum insertion mark
Hydraulic disc brakes by Promax
Rotor diameter front/back: 140/140 mm
Ergonomic brake levers designed for children's hands
50 kg (maximum combined weight of bicycle, rider and cargo)
Lightweight woom carbon fork
Multidirectional carbon fibers for high torsional stiffness
1 1/8″ – 1″ baby taper steerer tube
100 x 15 mm thru-axle
Post mount for disc brake
Forged aluminum
CNC-machined
Handlebars attached via two clamps
+/-15° flip-flop design to adjust handlebar height
Length: 50 mm
Child-friendly thanks to small diameter
Ultra comfortable thanks to reinforced contact surface for palms
100% silicone for maximum grip
Lock-on design to eliminate twisting
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
MTB-specific saddle
Trail-ready design
Ergonomic and age-appropriate design to fit the rider's pelvis
Side protection for leaning against walls
Quick-release aluminum seatpost clamp
Extra-long quick-release lever, easy to operate requiring only minimal strength
No risk of turning and/or twisting
black
terra coppa
tutorials

Assembly instructions

FAQ

Frequently Asked Questions

Woom bikes are designed for kids aged 18 months to 8 years. Check the product specifications to find the right size and recommended age.
We offer a standard 2-year warranty that applies automatically from the day you buy a new woom bike. You need to provide the purchase receipt to make a claim under the warranty. Make sure you keep it somewhere safe.
On a new bike, the Bowden cable is still pretty tight. It will stretch by itself after applying the brakes a few times. If the brakes are too tight, you can easily loosen them by turning the adjustment barrel on the Bowden cable. This will release the tension and open up the brakes. If only one brake pad is rubbing, you can adjust the spring tension on the brake. Our mechanic Tim explains exactly what you need to do in our video about adjusting the brakes.
Ready to upcycle your current woom bike that’s less than three years old? Visit our shop, and we’ll repurchase it for up to 40% of its original price, helping you size up to the next model.
reviews

Our happy clients

5/5

Pro and super friendly. Love the bikes!

Charles
5/5

This bike has been perfect for our 2 year old twin grand sons. It is just perfect for them to ride!

Tonya
5/5

The quality is outstanding and it was easy to put together. I love the look!

Kim
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