Woom 4 (20")

Name: Woom 4 (20")
Brand: Woom

kids

Origin

The Woom 4 is the gear-shift graduation: the first woom model with multiple speeds, marking a child's move from neighborhood loops to longer, varied rides. Cycling Weekly described it as "the major step up" in the lineup.

Specifications

Frame: Lightweight AA 6061 aluminum with butted tubes, child-specific angular tube profile
Weight: kg
Drivetrain: 7-speed; Shimano gripshift (twist) right-side shifter; Shimano rear derailleur; child-specific crank length 110 mm
Brakes: V-brakes front and rear; child-specific ergonomic levers with adjustable reach
Wheels: 20-inch — standard woom 4 wheel size

The verdict

+Strengths

Introduction of gears opens up real terrain variety for growing riders
Gripshift operation is well-matched to 6–8 year old fine motor skill level
Low weight makes it easy for children to manoeuvre without adult help

−Weaknesses

Gripshift can feel imprecise compared to trigger shifters older kids may prefer
V-brakes less powerful in wet/muddy conditions vs disc brakes on higher-end models
Premium price relative to 20-inch bikes at this age bracket