Ridgeback Dimension 20 Kids Bike in Bengal Blue
The Ridgeback Dimension 20 is a lightweight kids bike for riders aged roughly 5½ and upwards who are ready to move up to gears. If your child has outgrown a smaller single-speed bike and wants to go further, tackle hills, and ride with more independence, this 20-inch kids bike is built for that step up.
The move to gears
This is where things get exciting for young riders. The Dimension 20 comes with a 7-speed Shimano drivetrain, giving children a wide enough gear range to handle hills without grinding to a halt and flat sections without spinning out. As a kids bike with gears in the UK, it's a proper introduction to shifting rather than a token extra, and the Shimano setup is reliable enough that it won't need constant fiddling. For parents looking for the best kids bike with gears at this age, the Dimension 20 handles that transition well.
Still properly light
The light aluminium frame, fork, and components keep weight down, which matters even more once children start riding longer distances. A lightweight aluminium kids bike is easier to pedal, easier to steer, and easier to pick up when it inevitably gets dropped at the park. At this age, a heavy bike can be the difference between a child who wants to ride and one who doesn't.
Sized for children
Ridgeback carry the same child-specific sizing from their smaller bikes into the Dimension 20:
- Easy-pedal cranks proportional to a child's leg length, positioned closer to the centre of the bike for smooth, natural pedalling
- Narrower handlebars and smaller-diameter grips that fit growing hands properly, with good brake reach
- A lowered frame for easier mounting and more standover clearance
- A steering limiter to help prevent over-steering while coordination is still developing
Tyres
The puncture-resistant Nutrak by Vee Speedster tyres have a gravel-bike style tread that rolls well on roads, paths, and park tracks. They're also reflective, which adds visibility on darker afternoons during the school run or winter rides.
At a glance
- Frame: lightweight aluminium
- Fork: aluminium
- Wheel size: 20 inch
- Gearing: Shimano 7-speed
- Tyres: Nutrak by Vee Speedster, puncture resistant, reflective
- Chain case: included
- Steering limiter: yes
- Colour: Bengal Blue
Who is it for?
A 20-inch bike for a 6-year-old or a tall 5-year-old who's ready for gears and longer rides. The Ridgeback Dimension 20 kids bike suits children who have the confidence to ride independently and want a bike that can keep up as they start covering more ground. It's a solid choice as a kids bike for age 5 and up that won't need replacing in six months.
The Ridgeback Dimension 20 is for sale in the UK through our shop. If you need help choosing between the 16 and 20 inch sizes or want to try one for fit, our team is always happy to help.