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Kid's Bikes 20" Wheel (5-9yrs/108-129cm)

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22% Off Full Price
Merida Matts J20 20" Kids Mountain Bike Purple/Black

Merida

Merida Matts J20 - 20" Kids Mountain Bike Purple/Black

Regular price $699.00 Full price
Sale price $699.00
Club price
Regular price $899.00 Full price
21% Off Full Price
Pedal Bam 20" Kids Bike Blue/Black

Pedal

Pedal Bam 20" Kids Bike Blue/Black

Regular price $299.00 Full price
Sale price $299.00
Club price
Regular price $379.00 Full price
Pedal Strike 20" Kids Bike Steel Silver/Green

Pedal

Pedal Strike 20" Kids Bike Steel Silver/Green

Regular price $269.00 Full price
Sale price $269.00
Club price
Regular price $299.00 Full price
21% Off Full Price
Pedal Bam 20" Kids Bike Purple Lilac

Pedal

Pedal Bam 20" Kids Bike Purple Lilac

Regular price $299.00 Full price
Sale price $299.00
Club price
Regular price $379.00 Full price
22% Off Full Price
Pedal Zap 20" Kids Bike Pink/White

Pedal

Pedal Zap 20" Kids Bike Pink/White

Regular price $349.00 Full price
Sale price $349.00
Club price
Regular price $449.00 Full price
22% Off Full Price
Silverback Spyke D 20” Kids Mountain Bike Vibrant Berry

Silverback

Silverback Spyke D 20” Kids Mountain Bike Vibrant Berry

Regular price $539.00 Full price
Sale price $539.00
Club price
Regular price $699.00 Full price
22% Off Full Price
Pedal Zap 20" Kids Bike Red/Grey

Pedal

Pedal Zap 20" Kids Bike Red/Grey

Regular price $349.00 Full price
Sale price $349.00
Club price
Regular price $449.00 Full price
Pedal Chomp Steel 20" Kids Bike Lilac Night

Pedal

Pedal Chomp Steel 20" Kids Bike Lilac Night

Regular price $319.00 Full price
Sale price $319.00
Club price
Regular price $359.00 Full price
Pedal Chomp Steel 20" Kids Bike Sulphur Spring

Pedal

Pedal Chomp Steel 20" Kids Bike Sulphur Spring

Regular price $319.00 Full price
Sale price $319.00
Club price
Regular price $359.00 Full price
Pedal Strike 20" Kids Bike Aqua

Pedal

Pedal Strike 20" Kids Bike Aqua

Regular price $269.00 Full price
Sale price $269.00
Club price
Regular price $299.00 Full price
22% Off Full Price
Merida Matts J20+ 20" Kids Mountain Bike Blue/Dark Blue

Merida

Merida Matts J20 Plus - 20" Rigid Fork Kids Mountain Bike Blue/Dark Blue

Regular price $699.00 Full price
Sale price $699.00
Club price
Regular price $899.00 Full price
22% Off Full Price
Silverback Spyke 20D 20" Kids Bike Orange

Silverback

Silverback Spyke 20D 20" Kids Bike Orange

Regular price $539.00 Full price
Sale price $539.00
Club price
Regular price $699.00 Full price
19% Off Full Price
Silverback Skid 20" Kids Bike Red

Silverback

Silverback Skid 20" Kids Bike Red

Regular price $379.00 Full price
Sale price $379.00
Club price
Regular price $469.00 Full price
27% Off Full Price
Apollo Neo 20" Kids Bike 6-Speed Brushed Alloy/Black/Orange

Apollo

Apollo Neo 20" Kids Bike 6-Speed Brushed Alloy/Black/Orange

Regular price $349.00 Full price
Sale price $349.00
Club price
Regular price $479.99 Full price
21% Off Full Price
Pedal Hyena 20" Kids Bike Cobalt Chrome

Pedal

Pedal Hyena 20" Kids Bike Cobalt Chrome

Regular price $549.00 Full price
Sale price $549.00
Club price
Regular price $699.00 Full price
22% Off Full Price
Silverback Spyke D 20” Kids Mountain Bike Metallic Blue/Lime

Silverback

Silverback Spyke D 20” Kids Mountain Bike Metallic Blue/Lime

Regular price $539.00 Full price
Sale price $539.00
Club price
Regular price $699.00 Full price
23% Off Full Price
Merida Matts J20 - 20" Kids Bike Black/Red

Merida

Merida Matts J20 - 20" Kids Bike Black/Red

Regular price $435.00 Full price
Sale price $435.00
Club price
Regular price $569.00 Full price
23% Off Full Price
Merida Matts J20 20” Kids Mountain Bike Red/Orange/Black

Merida

Merida Matts J20 - 20" Kids Mountain Bike Red/Orange/Black

Regular price $435.00 Full price
Sale price $435.00
Club price
Regular price $569.00 Full price
Merida Matts J20+ 20" Kids Bike Fall Green/Red

Merida

Merida Matts J20 Plus - 20" Rigid Fork Kids Bike Fall Green/Red

Regular price $799.00 Full price
Sale price $799.00
Club price
Regular price $899.00 Full price
19% Off Full Price
Silverback Skid 20" Kids Bike Pink

Silverback

Silverback Skid 20" Kids Bike Pink

Regular price $379.00 Full price
Sale price $379.00
Club price
Regular price $469.00 Full price
19% Off Full Price
Silverback Skid 20" Kids Bike Blue

Silverback

Silverback Skid 20" Kids Bike Blue

Regular price $379.00 Full price
Sale price $379.00
Club price
Regular price $469.00 Full price
19% Off Full Price
Silverback Skid 20" Kids Bike Teal

Silverback

Silverback Skid 20" Kids Bike Teal

Regular price $379.00 Full price
Sale price $379.00
Club price
Regular price $469.00 Full price
23% Off Full Price
Merida Matts J20 Kids Mountain Bike Orange

Merida

Merida Matts J20 - 20" Kids Mountain Bike Orange

Regular price $435.00 Full price
Sale price $435.00
Club price
Regular price $569.00 Full price

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What to consider when shopping for 20 Wheel Kids Bikes

When shopping for 20-inch wheel kids bikes, the most important starting point is making sure the bike suits your child's size and confidence level. This collection is designed for children roughly aged 5 to 8, making it a popular choice for parents looking to upgrade from a smaller starter bike to something their child can grow into. Consider how your child will use the bike most, whether that's riding to school, exploring the neighbourhood, or joining the family on weekend rides, as this can help guide your choice between more basic models and those with added features like gears or hand brakes. Brand quality and value both matter here, so it's worth comparing options across the range to find the right balance. Many bikes in this collection are available for in-store pickup, making it easy to get your child fitted before you buy. Read our FAQs further down to learn what to look for when choosing the right 20-inch kids bike.

Commonly Asked Questions about Kid's Bikes 20" Wheel (5-9yrs/108-129cm)

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Expert Advice

Kid's Bike Buying Guide
Buying Guides

Kid's Bike Buying Guide

Whether it’s your kids first bike, or they’ve outgrown their old set of wheels; buying a kids bike can be difficult if you don’t know how to pick the right one. Kids bikes are sized according to their wheel size, not their frame size. Size is the most important consideration when choosing bicycles for kids. The right size bike will help keep your child safe, comfortable and get the most enjoyment from their bike. Another important consideration is the frame weight. A lightweight frame that places the child in a stable, comfortable riding position will be easier to pedal and more enjoyable to ride, meaning it will get ridden much more! Bikes made with alloy frames are typically more expensive than bikes with steel frames. The benefits of alloy are that it is lighter and easier for the child to ride, as well as being less prone to rust.An alternative for older kids are BMX bikes. BMX frames are generally more heavy duty, but this does make them slightly heavier so they’re better suited to more experienced riders.All kids bikes at 99 Bikes are professionally assembled by a trained bike mechanic according to a rigorous safety checklist. This ensures both a safer and less frustrating experience than assembling the bike yourself. KID’S BIKE SIZING The height of the child more important than the child’s age, however, for simplicity this guide refers to the suitability of the bike relative to approximate age groups. Age Height Wheel Size Under 2 Up to 95 cm 12 inch balance bike Ages 2 - 4 78 cm - 94 cm 12 inch kid’s bike Ages 3 - 6 84 cm - 112 cm 16 inch kid’s bike Ages 6 - 9 108 cm - 129 cm 20 inch kid’s bike or BMX bike Ages 8 - 11 125 cm - 148 cm 24 inch kid’s bike Ages 10+ 145 cm - 160 cm 26 inch kids bike or extra small adults bike TODDLERS - BALANCE BIKES Balance bike all come in a 12 inch wheels size and are suitable for kids up to 2 years old. Balance bikes are two wheeled bike without pedals that allow children to sit and coast, helping them develop the balance and skills required to ride a bicycle. The perfect introduction to bikes Balance bikes come with a 12 inch wheel Suitable for kids up to 2 years old No pedals, so they help develop important balance and skills required for riding SEE ALL BALANCE BIKES AGES 2-4 YEARS OR 78-94CM - 12” KIDS BIKE 12 inch bikes are generally suitable for kids 2 – 4 years old. These bikes come with training wheels, and may feature a push steerer so the child can be assisted or directed when needed. 12 inch kids bikes are best suited to young children ages 2-4 years old These bikes come with training wheels May feature a push steerer so the child can be assisted or directed where needed SEE ALL 12" BIKES AGES 3-6 YEARS OR 84-112CM - 16” KIDS BIKE 16 inch bikes are generally suitable for kids aged 3 – 6 years old. Typically bikes this size will have training wheels and no gears. Around this age children may not have developed a lot of the strength required for riding, so the bike’s weight will be an important consideration. For older children you may want to consider a 16” BMX for a stronger, heavier duty bike. 16 inch kids bikes are suited to those aged between 3 and 6 years old These bikes will typically come with training wheels and no gears Bike weight is an important consideration as some kids will not have developed a lot of strength required for riding For older children you may want to consider a 16” BMX for those kids wanting a stronger or more heavy duty bike SEE ALL 16" BIKES AGES 6-10 YEARS OR 108-129CM - 20” KIDS BIKE 20 inch bikes are generally suitable for kids aged 6 -10 years. 20 inch is also the standard size for a BMX wheel, and given they both have no gears the 20 inch kid’s bike and BMX share a lot of similarities. The main difference between the two is that a kid’s bike will be lighter and easier to ride, and a BMX will be heavier and more durable. Kid’s bikes are designed in a mountain bike style, whereas BMX are designed more for street and skate park riding. A kid’s bike may be a better option if the child is still learning to ride, while a BMX will be more suitable if the child is already confident - or if they have a tendency to be rough with things. Some 20 inch bikes also come with gears, which can be beneficial if the child is a bit more experienced and coordinated, as well as suspension for better comfort and handling. 20 inch kids bikes are best suited for kids aged between 6 to 10 years old This size is also the standard size for BMX Kids 20 inch bikes are designed as a mountain bike style, so they’re easier to ride and lighter Kids bikes are the best option if they are newer to riding BMX bikes are more durable and designed for street or skate park riding BMX are great for the more confident rider or if they tend to be rough with things! Some 20” kids bikes come with gears so are a great options if your child is more experienced and wants to build on their riding skills SEE ALL 20" BIKES AGES 8-11 YEARS OR 120-148CM - 24” KIDS BIKES 24 inch geared bikes can suit children aged 8 - 13 years old. 24 inch bikes are designed in a mountain bike style, features like gears and suspension forks. 24 inch is the second largest of what we would call kids bikes. For taller kids, the next progression would be onto an 26 inch kids bike or an extra small adults mountain bike. 24 inch bikes are best for those kids aged between 8 and 11 years old Geared 24” bikes suit the more experienced kids These bikes are designed in a mountain bike style, and are quite rugged 24 inch kids bikes often come with more advanced features like better tyres, gears and suspensions forks These bikes still feature a low standover height so children can easily reach the ground while riding SEE ALL 24" BIKES AGES 9-13 YEARS OR 145-160CM - 26” INCH KIDS BIKES 26 inch mountain bikes are suited for kids that are 9-13 years old. 26 inch bikes typically feature gears and suspension forks. 26 inch bikes are the largest of kids bikes with the next progression in bikes being an extra small adult bike. Taller kids above 148cm now have an option to go for a 26” kids bikes as opposed to a small adult’s frame These 26 inch kids bikes offer great value for older kids The junior frame stye features an easy reach brake lever and other child-friendly features, making them a preferred choice over an extra small adult’s frame for children SEE ALL 26" BIKES

Oct 19, 2025
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