New Arrival
OFF 5 24in Mountain Bike - Kids'
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The woom OFF 5 is a 24" kids' mountain bike built for riders who are progressing on real trails
What Our Gearhead® Experts Are Saying:
"The dropper seatpost-ready frame is the detail that tells you woom is thinking about where a 7 to 11 year old rider is headed, not just where they are. Pair that with the wider 2.35" Rocket Ron tires, 160mm rotors, and longer 130mm cranks proportioned for this age group, and the OFF 5 is a bike that grows with a developing trail rider rather than one they outgrow before they outgrow the frame."
The OFF 5's 6061-T6 aluminum frame uses butted and hydroformed tubes sized for the 7 to 11 age range, with a low top tube for easy dismounts and a dropper seatpost-ready seat tube for riders who want more capability as their skills develop. The light carbon fork runs a 100 x 15mm thru axle and stays stiff and responsive through varied terrain. SRAM X5 trigger shifters index through 9 speeds backed by an 11-34T cassette and 28T narrow-wide chainring, a wider range than the OFF 4 for the longer climbs that come with bigger trails. Promax hydraulic disc brakes run 160mm rotors front and rear, proportionally sized for riders moving faster and carrying more weight than the OFF 4 age range. Schwalbe Rocket Ron 24 x 2.35" tires with ADDIX SPEED compound deliver low rolling resistance on hardpack and real traction on loose and rooty surfaces. The 130mm child-specific cranks maintain a narrow Q-factor appropriate for this age group. The flip-flop stem adjusts handlebar height without additional hardware, and the Alexrims tubeless-compatible wheelset with thru axles front and rear is ready for a tubeless setup when the rider wants it.
Heads up - We do our best to keep bike specs and images current, but occasional component changes can happen without warning-and sometimes the photos might not show the exact build you'll receive. If you want to double-check the details, our Gearheads are always here to help.
Details
- Dropper seatpost-ready frame means kids aged 7 to 11 can add one as their trail riding progresses
- Wider 24 x 2.35" Rocket Ron tires grip loose terrain and absorb trail chatter better than narrower options
- 160mm rotors front and rear deliver proportionally more stopping power for bigger, faster riders
- Carbon fork keeps the front end light and responsive on varied terrain
- Nine speeds with an 11-34T cassette cover a wider range for longer climbs at this age
- Flip-flop stem adjusts handlebar height in two positions without extra parts
- Tubeless-compatible rims are ready to run without tubes when the rider is ready
- Item #WOO000K
- Frame Material
- 6061 T6 aluminum
- Suspension
- hardtail
- Fork
- carbon
- Headset
- integrated 1 1/8 - 1in
- Shifters
- SRAM X5 trigger
- Rear Derailleur
- SRAM X5
- Crankset
- forged aluminum
- Chainring Sizes
- 28t
- Crank Arm Length
- 130mm
- Cassette Range
- 11 - 34t
- Brakeset
- Promax
- Brake Type
- hydraulic disc
- Rotors
- 160mm
- Handlebar
- lightweight aluminum
- Handlebar Width
- 585mm
- Grips
- silicone
- Stem
- forged aluminum
- Stem Length
- 50mm
- Saddle
- ergonomic
- Seatpost
- aluminum
- Wheelset
- Alexrims
- Hubs
- aluminum
- Front Axle
- 15 x 100mm thru
- Rear Axle
- 12 x 135mm thru
- Tires
- Schwalbe Rocket Ron, ADDIX SPEED
- Tire Size
- 24 x 2.35in
- Pedals
- platform
- Claimed Weight
- 20.1lb (9.1kg)
- Activity
- trail
- Manufacturer Warranty
- 2 years
Built For Real Terrain Riding

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Built For Confident Riding

Lightweight Trail Frame
A lightweight aluminum frame keeps handling responsive and durable for confident riding on trails

Disc Brakes
Powerful disc brakes with adjustable levers provide consistent stopping power and control in mud, dirt, and wet conditions

9-Speed Drivetrain
A wide-range 9-speed drivetrain delivers smooth, precise shifting and reliable pedaling across climbs and descents

Grippy Trail Tires
Tubeless-ready tires balance low rolling resistance with strong grip for confident riding on loose and uneven terrain

Dropper-Ready Frame
Designed so riders can upgrade to a dropper post for more control and confidence on descents
Choose Your Ride

OFF Carbon Fork — Smooth Trails
A lightweight carbon fork keeps the bike efficient and responsive while reducing vibration on smoother trails

OFF AIR Suspension Fork — Rough Terrain
An adjustable suspension fork absorbs bumps and improves traction for more control on rough terrain
Find The Right Size



Geometry Chart

Size Chart

Complete Your Setup

Made To Grow With Every Ride
woom started in a Vienna garage when two bike‑obsessed dads reimagined kids’ bikes from the ground up, engineering superlight, child‑specific designs that turned first wobbles into real, joyful riding. Today their award‑winning lineup evolves with kids, moving from tiny first bikes to more advanced models that keep pace as skills, confidence, and ride ambitions grow.