How to Size a Child for a Lightweight Frog Bike ?

Sizing Up

In contrast to many kid’s bikes, Frog bikes are sized by leg length rather than age, as this is the most reliable way of getting the right size of bike for each child. Age alone isn’t a reliable measure as there is a large spread of “normal” leg lengths & heights for each age. Follow our Frog Bike Size Guide to find the right size for your child.

We recommend taking the time to measure the rider’s inside leg – it’s easy to do using our Frog Bike Size Guide:

  • Stand the child in socks against a wall.
  • Place a small book between their legs, as high as is comfortable.
  • Ask the child to move away and measure from the top of the book to the floor.

Once you have measured the inside leg, use the table below to find the right size of bike for your child. Please note we give the AVERAGE inside leg length for each bike, with the saddle at its lowest setting (please be aware there is tolerance on each side of this).

At this height, the child will safely and comfortably be able to get their feet on the ground. Don’t worry – Frog Bikes have long seat posts, so the saddle can be raised a long way as the rider grows.

If your child is halfway between Frog bike sizes we recommend you size up to the larger bike to maximize how long it will last them.
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This method of measurement is intended as a guide and we recommend you call into our shop to be correctly sized up, all bikes ordered in-store will receive a comprehensive safety check, followed up with a 6-week check over and ongoing support should any problems arise at a later date.

Frog Bikes Available

Average Inside Leg in cm (in)Approx AgeWheel SizeFrame Size
Tadpole Mini24cm (9″)1-210″  –
Tadpole31cm (12″)2-312″ –
Tadpole Plus38cm (15″)3-414″
Frog 4040cm (16″)3-414″9″
Frog 4448cm (19″)4-516″9.5″
Frog 52S (single Speed)52cm (20″)5-620″10″
Frog 5352cm (20″)5-820″10″
Frog 6262cm (24″)8-1024″12″
Frog 6969cm (27″)10-1226″14″
Frog 7373cm (29″)12-1426″16″
Frog 78 78cm (31″)13+ 26″ 18″ 
Frog Road/Track 5858cm (23″)6-720″11″
Frog Road/Track 6767cm (26″)8-1224″14″
Frog Road/Track 7070cm (27″)11-1426″17″
Frog MTB 6262cm (24″)8-1024″12.5″ 
Frog MTB 69 69cm (27″)10-1226″15″
Frog MTB 72 72cm (28″) 13+ 26″ 16″

Check out some of our kids bikes here. Call instore to find out about other bikes that we can order

Dont forget to add a Frog Kick stand to the bike, its a great way to keep the bike safe from scratches and store neatly in the garage.

Frog Kick Stands

Frequently asked questions about frog bikes

Where are Frog Bikes Made?

Frog Bikes are manufactured in the UK (Pontypool factory in South Wales).

Originally they were made in China but production was moved to the UK in 2016.

Are frog bikes worth the money?

Cyclo Monster has been retailing Frog Bikes since they first became available, their quality vs price was exactly the sort of child’s bike we were looking for to stock after we first opened. We have been selling them ever since and we feel they are one of the best brands around to start your children riding. Our staff’s kids all ride Frog Bikes.

Why are frog bikes so expensive?

Frog Bikes are certainly more expensive than some basic bikes. However, if you compare the weights and specifications it will soon become apparent why it’s worth spending extra to buy a Frog Bike. Weight is one of the most important elements when choosing a children’s bike.

It could be the difference between your child loving or hating the cycling experience.

You wouldn’t strap a rucksack full of weights to your child’s back before sending them out for a bike ride and expect them to ride very far. That’s why we believe it’s worth spending a little extra on a bike. Frog Bikes hold up very well in the second-hand market and they are very easy to sell privately and often for a very good price.

What is the smallest frog bike?

The smallest frog bike available is the 40, this is suitable for children with an inside leg measurement of around 40cm, typically suitable for kids aged 3-6, which is equivalent to around a 14-inch bike. This bike is very light and very easy for a small child to ride. It could also be used as a balance bike by removing the pedals until they have learned to balance properly on the bike.

What is a frog bike paint plaster?

When you buy a new frog bike you usually get a pack of stickers in the same colour as the bike, these can be used to stick over any scratches should your little one decided not to be as careful with the bike as you might like.

Do frog bikes come with 2 sets of tyres

Frog bikes no longer come with 2 sets of tyres, instead, they now come with a general-purpose tyre suitable for most types of riding on or off-road.

Are there any alternatives to Frog Bikes

There are some alternatives to Frog Bikes including Squish Bikes, Cuda Bikes, Raleigh, Cube and Scott

We hope our Frog Bike Size Guide article was helpful, please get in touch with any questions

About Frog Bikes

Frog Bikes are a British company that designs and manufactures children’s bicycles. Founded in 2012 by Jerry Lawson, a former professional cyclist and father of two, the company’s mission is to create bikes that are lightweight, easy to ride, and fun for kids.

One of the key features of Frog Bikes is their lightweight design. Traditional children’s bikes can weigh up to twice as much as adult bikes, making them difficult for kids to maneuver and control. Frog Bikes, on the other hand, use lightweight aluminum frames and components, making them much easier for kids to handle. This not only makes riding more enjoyable for kids, but it also helps to improve their balance and control, which is crucial for their safety.

Another important aspect of Frog Bikes is their attention to detail. The company takes great care to ensure that their bikes are designed and built to the highest standards, with a focus on safety, durability, and performance. This includes things like using high-quality materials, such as lightweight aluminum, and incorporating features like v-brakes and suspension forks to improve the bike’s handling and stability.

Frog Bikes also offer a wide range of models to suit different ages and riding styles. They have balance bikes for toddlers, pedal bikes for young children, and even hybrid bikes for older kids. This allows parents to choose the perfect bike for their child, whether they are just learning to ride or are ready for more advanced terrain.

One of the most popular models from Frog Bikes is the Frog 53. This bike is designed for children between the ages of 5 and 8, and is the perfect choice for kids who are just learning to ride. It features a lightweight aluminum frame, v-brakes, and a simple, easy-to-use single speed drivetrain. The bike also comes with a kickstand, a bell, and a set of reflectors, making it safe and easy for kids to ride.

For older kids, the Frog 62 is another good option. This bike is designed for children between the ages of 9 and 12, and features a lightweight aluminum frame, suspension fork, and 8-speed Shimano gears. It also comes with a kickstand, a bell, and a set of reflectors, making it safe and easy for kids to ride.

For older kids, the Frog Hybrid is a perfect option. This bike is designed for children between the ages of 12 and 16, and features a lightweight aluminum frame, suspension fork, and 8-speed Shimano gears. It also comes with a kickstand, a bell, and a set of reflectors, making it safe and easy for kids to ride.

Frog Bikes also offer a wide range of accessories to help make riding even more fun and enjoyable for kids. These include things like water bottles, bags, and even a special light that attaches to the bike’s handlebars. This helps to make riding even more fun and enjoyable for kids, and also helps to encourage them to ride more often.

In conclusion, Frog Bikes are a great choice for parents who want to give their kids the best possible start when it comes to cycling. With their lightweight design, high-quality materials, and attention to detail, these bikes are not only fun and easy for kids to ride, but they are also safe and durable.

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