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Top 5 things to look for when choosing a children’s bike.


Imagine riding a bike that’s half your own body weight? That’s what lots of kids’ bikes are like. It’s hard for a small child to control or right a heavy bike once it starts to topple. A lightweight bike is easier for children to balance, control and enjoy, and faster to ride! It means they can carry their own bike up steps and terrain that’s too tricky to ride. It’s also easier for parents to carry or load onto a roof-rack. From balance bikes to 26" road bikes Frog Bikes are all lightweight aluminium frames and high quality light weight components. This makes them some of the very lightest bikes on the market.


To get the right size bike for your child, the most important measurement is inside leg. Stand your child against a wall, with their heels right against the wall. Put a book between their legs, as high as is comfortable. Ask them to step away from the wall, allowing you to measure from the floor to the top of the book (in cm). Check our size guide to see what size of bike will best fit your child. Don’t be tempted to go for a larger bike, it’s not safe for a child to ride a bike that they can’t easily control, or where their legs don’t comfortably reach the ground. Frog Bikes are designed to grow with your child so you should get at least 18 months’ use out of the bike: the saddle height is easily adjusted, seat posts are long. 

The Q factor and other child specific components

All Frog bikes are designed with the child in mind. They continually modify frames and components in collaboration with sports scientists at the University of Brunel. Uniquely Frog bikes use a fine tuned crank design developed by the engineer responsible for Team GB Olympic frames, Dimitris Katsanis. This design reduces the space between the pedals – called the Q-Factor – which allows children to push down more directly on the pedals, getting more propulsion for energy used. Frog also use brakes and gears designed to make them easy for children to operate.

Frog bijke


If your child only rides their bike around town, to school or the local park chances are they don’t need a mountain bike. Chunky tyres and heavy suspension slow them down and make riding tough.  Frog only make specialist mountain bikes for 8 years plus, until that age their weight is too low for suspension to work and the Hybrid work as well. However, for older children who regularly ride on forest or mountain trails a mountain bike makes sense.

Road bikes are great if you regularly ride long distances on paved cycle paths or roads. The Frog road bikes are fast and light and come with two sets of tyres. They're perfect if your child is into racing or triathlons, cycling long distances at weekends or just has a longer road commute to school. They come with two sets of tyres so can also be ridden on rougher terrain.

If your child prefers a more upright riding position, the hybrid works well on and off road. Frog hybrids also come with two sets of tyres. Light weight and easy to ride. We'd reccomend these for less experienced cyclists as they are easier to handle than the specialist bikes.


Whilst it’s import to decide with your child what type of bike will be best for them. Kids like to choose. Colour is something they can choose without any adverse effect on performance. However, given the cost of decent bike if you have more than one child you may want to encourage them to opt for a colour that will also be acceptable to their sibling when the bike is handed down.


Frog bikes recommend children try their bikes before you buy. If you live near Cambridge, you can call us on 01223 789606 to arrange an appointment to try one of our wide range of Frog Bikes.

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