Woom OFF AIR 4 Bike 20"

$999.10
By Woom

Color

The ultralight and durable 20″ mountain bike with front suspension, 9 gears and disc brakes designed for children aged 6 years and over.

 

Specifications

Frame

  • Frame material: lightweight, high-quality 6061-T6 aluminum with butted and hydroformed tubes
  • 20″ wheels
  • Easy-access low top tube to assist dismounting
  • Long wheelbase and low center of gravity to aid balancing
  • Featuring woom-specific molded chainstay protector 

Gears

  • 9 speeds
  • SRAM X5 trigger shifter
  • SRAM X5 rear derailleur

Suspension Fork

  • RST SPEX hydraulic air suspension fork with 60 mm travel, adjustable compression, and rebound damping, plus lock-out
  • 1 – 1 ⅛″ tapered steerer tube
  • 100 x 15 mm thru axle
  • Post mount for disc brake

Wheels

  • Tubeless-compatible Alexrims wheelset
  • Aluminum hubs with sealed industrial bearings
  • Thru axles for maximum torsional strength (100 x 15 mm front and 135 x 12 mm rear)
  • 20 G14 spokes, double-crossed spoking
  • Aluminum nipples

Headset

  • Fully integrated 1 – 1 ⅛" headset
  • Sealed industrial bearings

Tires

  • 20 x 2.25″ Schwalbe Rocket Ron with ADDIX SPEED rubber compound
  • Quality mountain bike tires with low rolling resistance, maximum grip, good shock absorption, and excellent durability
  • Presta valves, tubeless conversion ready

Stem

  • Forged aluminum
  • CNC-machined
  • Handlebars attached via two clamps
  • Rise/drop: +/-15° with flip-flop design to adjust the handlebar height
  • Length: 50 mm

Saddle

  • Ergonomically designed to fit a child’s anatomy
  • Streamlined, mountain-bike-specific saddle design 
  • Side protection to lean against walls

Handlebars

  • Wide, ergonomically adapted and lightweight aluminum bars for more control
  • Tapered end to fit a child’s hand
  • Sandblasted and silver anodized
  • Width: 570 mm
  • Rise: 20 mm

Seatpost

  • 27.2 x 250 mm
  • Anodized aluminum seatpost with insertion marks that indicate the minimum insertion depth
  • Quick-release seatpost clamp

Grips

  • Child-friendly because of a small diameter
  • Single-clamp grip to prevent twisting
  • Safety zone: extra rubber on the palm-facing portion of the grip for added comfort
  • 100% silicone for maximum grip

Seatpost Clamp

  • Quick-release seatpost clamp for easy adjustments
  • Made from aluminum

Drivetrain

  • Lightweight, forged aluminum, 4.3" (110 mm), kid-specific 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 fiber-reinforced nylon
  • Chromoly axle and sealed industrial ball bearings

Brakes

  • Hydraulic disc brakes by Promax
  • Rotor diameter front/back: 140/140 mm
  • Ergonomic brake levers designed for a child’s hands

Weight

  • Bike weight: 20.9 lbs
  • Max weight: 110 lbs combined weight of the Rider and cargo

Colors

  • Black
  • Terra Coppa

Enclosed Tools

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

Shipping Dimensions

45 x 26 x 9”