Woom 4 sky blue
The Woom 4 introduces children aged 6 years and up to the world of gear-shifting. 7-speed gears in combination with an easy-to-operate twist grip shifter expand the bike's range of use and increase the child's mobility.
Weighing in at only 7.7 kg, the Woom 4 is a real lightweight. Whether they want to ride their bikes into the woods or up hills – the new-found freedom of gears makes longer adventures on two wheels child's play!
Innovative frame design
A superlight aluminium frame is the heart of the bike and ensures a fun and safe riding experience. Woom's cleverly designed age-specific geometry offers excellent control over the bike and gives young riders maximum safety while exploring new horizons.
Child-specific hand-operated brakes
The front and rear V-brakes are easy to operate thanks to their ergonomically adapted brake levers with reach adjustability. The levers require minimal effort to bring the bike to a safe halt.
Individually adjustable Vario stem
With Woom's adjustable Vario stem, you can set not only the height of the handlebar but also the length, to suit the rider. This flexibility means the bike grows with your child to ensure an optimal riding position at all times.
Cranks with a narrow Q-factor
The crank length and distance between the pedals are ergonomically adapted to fit children's bodies. This results in an optimum stance and very natural movements. Also, there's no risk of your child getting their trouser leg caught thanks to the chainguard ring.
Twist shifter for intuitive shifting
The easy-to-operate microSHIFT twist shifter enables riders to shift intuitively through the 7 gears with minimal hand strength requirements.
Practical quick-release skewer
The Woom 4 features a quick-release front wheel. Quick-release wheel skewers make installing and removing wheels from the frame a quick and easy job.
Having wheels out of the frame makes it much easier to transport the bike in a car. Quick removal and installation of the wheels is also super helpful if you get a flat tyre.
Ergonomically formed 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. This is why Woom's saddle is designed to fit the pelvis of children in this age group and give them a slightly stretched-out riding position. Perfect for a unique riding experience!
Practical quick-release seatpost clamp
The quick-release seatpost clamp offers a simple, quick and tool-free way to adjust the saddle height. It's even easy enough to be operated by children. On your pedals, ready, go!
Grippy, low-resistance tyres
Tyres have a major influence on how a bike rides. This is why Woom have chosen tyres that can be used for a broad variety of terrain. Whether your child is cycling on tarmac, gravel or dirt, straight ahead or making turns, these lightweight tyres will ensure maximum grip in any weather and on any surface.
Seven gears
Precise and easy-to-use gear-shifting makes riding more fun and enables children to go on longer rides while remaining simple enough for youngsters to understand. The microSHIFT system has 7 gears at the back (11-28T) designed for a wide range of gradients combined with a 28-tooth chain ring at the front.
- Frame: Aluminium alloy / AL 6061 series / Butted tubes
- Fork: Aluminium alloy / Straight & slightly tapered leg
- Headset: Fully integrated threadless 1" alloy A-head / Sealed industrial-grade bearings
- Shifter: microSHIFT MS29 twist-grip / 1x7 speed
- Rear Derailleur: microSHIFT M21
- Freewheel: Cassette / 11-28T / 7 speed
- Chain: KMC
- Chainset: Woom 28T narrow-wide chainring / Woom forged 110mm alloy crank arms
- Chainguard: Single-sided aluminium
- Pedals: Woom non-slip narrow flat platform with reflectors
- Bottom Bracket: 3-piece crank system / square taper / Sealed cartridge
- Rims: Woom 'Soopa-Doopa-Hoops' superlight aluminium / 20H
- Front Hub: Woom 'HubCore' hollow alloy / Sealed bearing / Quick-release / 20H
- Rear Hub: Woom 'Hub 'N' Roll' hollow alloy / Sealed bearing / 5mm Allen hex bolt internal fixing / 20H
- Spokes: Stainless steel 14G
- Tyres: Schwalbe Little Joe folding 'Woom Edition' with K-Guard / 20" x 1 ⅜" / black with reflective stripe
- Front Brake: C-Star alloy linear pull V-type
- Rear Brake: C-Star alloy linear pull V-type
- Brake Levers: Alhonga junior alloy/resin with adjustable reach
- Handlebar: Woom sandblasted anodized aluminium / 520mm wide / Lo-rise / 22mm diameter
- Grips: Woom 'Kid Safe Plus' ergonomic / Lock-on with reinforced bumpers
- Stem: Forged aluminium A-head / Vario adjustable / 2 bolt clamp
- Saddle: Woom junior comfort / Ergonomically formed
- Seatpost: Anodized aluminium micro-adjust / Quick-release