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Kids' Bicycles

When choosing an appropriate bike for your child, you should always make sure it is the right size. The size is crucial for the child to be able to control the bike properly.

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The table below shows the values that will help you decide. Individual brands vary, so please consider the values in the table only as a guidance. To be sure, put the child astride above the top tube with the feet on the ground. The gap between the crotch and the tube frame should be about 5 cm. Always set the saddle height so that the child can reach the ground.

Also observe the correct seating position of the child. The child should not be stretching on the bike and handlebars should not be too high. The ideal height of the handlebars is at the waist level of the child. Underestimating these factors can lead to bad riding habits.

Children's bicycle sizes are numbered slightly differently than the ones for adults (seat tube length) and are measured according to the wheel diameter.

Size in inches (diameter)

Child's height in cm

Approximate age of the child

12 "

90-100

2-3 years

14 "

95-105

3-4 years

16 "

100-115

45 years

18 "

110-120

5-6 years

20 "

115-130

6-9 years

24 "

125-155

9-12 years

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Lightweight Kids’ Bikes Lightweight Girls' Bikes Girls' Boys' Bikes Boys' Kids' Bicycles - 2 to 3 Years 2-3 Years Kids' Bicycles - 4 to 6 Years 4 to 6 Years Kids' Bicycles - 7 to 9 Years 7 to 9 Years Children's Bikes 26" Diameter 26" Children's Bikes 24" Diameter 24" Children's Bikes 20" Diameter 20" Children's Bikes 16" Diameter 16" 14" Kids’ Bikes Diameter 14" Children's Bikes 12" Diameter up to 12" Kids' Electric Bikes Electric Bikes Bike Training Wheels Training Wheels Balance Bikes Balance Bikes Servis kola bez starostí Jak vybrat dětské kolo
 
202 Results
AUTHOR Cosmic 20 2026 10" Grey/Black/Red - Children's Bike
3 colors
AUTHOR Cosmic 20 2026 10" Grey/Black/Red
Children's Bike - children's bike 20" wheel from the age of 4 years, without suspension, meant for recreational use, aluminium frame, frame height: 254mm, frame size: XS, light weight, for children weighing up to 30kg, 2026 model
New arrival 137,540 Ft
Buy
In stock > 5 pcs
Order Code: SPTautko279
AUTHOR Limit 24 2026 12.5" Matt Titanium/Black/Red - Children's Bike
3 colors
AUTHOR Limit 24 2026 12.5" Matt Titanium/Black/Red
Children's Bike - children's bike 24" wheel, without suspension, meant for sports use, aluminium frame, frame height: 318mm, frame size: XS, with Without theme theme, light weight, pedals included, for children weighing up to 50kg, 2026 model
New arrival 168,140 Ft
Buy
In stock 4 pcs
Order Code: SPTautko286
AUTHOR Limit 24 2026 12.5" Silver/Yellow - Children's Bike
3 colors
AUTHOR Limit 24 2026 12.5" Silver/Yellow
Children's Bike - children's bike 24" wheel, without suspension, meant for sports use, aluminium frame, frame height: 318mm, frame size: XS, with Without theme theme, light weight, pedals included, for children weighing up to 50kg, 2026 model
New arrival 168,140 Ft
Buy
In stock 4 pcs
Order Code: SPTautko284
Joiride ultra light 24" medová/černá - Children's Bike
3 colors 4 sizes
Joiride ultra light 24" medová/černá
Children's Bike - children's bike 24" wheel from the age of 10 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included, for children weighing up to 80kg
193,390 Ft
Buy
In stock > 5 pcs
Order Code: SPTjoir011
Joiride ultra light 16" růžová/tmavě šedá - Children's Bike
3 colors 4 sizes
Joiride ultra light 16" růžová/tmavě šedá
Children's Bike - children's bike 16" wheel from the age of 5 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included, for children weighing up to 50kg
136,890 Ft
Buy
In stock > 5 pcs
Order Code: SPTjoir006
Joiride ultra light 20" medová/černá - Children's Bike
3 colors 4 sizes
Joiride ultra light 20" medová/černá
Children's Bike - children's bike 20" wheel from the age of 7 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included, for children weighing up to 65kg
169,190 Ft
Buy
In stock > 5 pcs
Order Code: SPTjoir008
Joiride ultra light 20" petrolejová/mátová - Children's Bike
3 colors 4 sizes
Joiride ultra light 20" petrolejová/mátová
Children's Bike - children's bike 20" wheel from the age of 7 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included, for children weighing up to 65kg
169,190 Ft
Buy
In stock > 5 pcs
Order Code: SPTjoir007
Joiride ultra light 16" medová/černá - Children's Bike
3 colors 4 sizes
Joiride ultra light 16" medová/černá
Children's Bike - children's bike 16" wheel from the age of 5 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included, for children weighing up to 50kg
136,890 Ft
Buy
In stock > 5 pcs
Order Code: SPTjoir005
Joiride ultra light 16" petrolejová/mátová - Children's Bike
3 colors 4 sizes
Joiride ultra light 16" petrolejová/mátová
Children's Bike - children's bike 16" wheel from the age of 5 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included, for children weighing up to 50kg
136,890 Ft
Buy
In stock > 5 pcs
Order Code: SPTjoir004
Joiride ultra light 14" růžová/tmavě šedá - Children's Bike
3 colors 4 sizes
Joiride ultra light 14" růžová/tmavě šedá
Children's Bike - children's bike 14 " wheel from the age of 3 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included and balance wheels, for children weighing up to 50kg
128,890 Ft
Buy
In stock > 5 pcs
Order Code: SPTjoir003
Joiride ultra light 14" petrolejová/mátová - Children's Bike
3 colors 4 sizes
Joiride ultra light 14" petrolejová/mátová
Children's Bike - children's bike 14 " wheel from the age of 3 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included and balance wheels, for children weighing up to 50kg
128,890 Ft
Buy
In stock > 5 pcs
Order Code: SPTjoir001
Rock Machine Blizz 20 MD Gloss Red/White/Black 20 × 10.0" - Children's Bike
2 colors
Rock Machine Blizz 20 MD Gloss Red/White/Black 20 × 10.0"
Children's Bike - children's bike 20" wheel, without suspension, meant for recreational use, aluminium frame, frame height: 250mm, with Without theme theme, light weight, pedals included, for children weighing up to 120kg, 2024 model
184,590 Ft
Buy
In stock 3 pcs
Order Code: SPTRoMa057
Rock Machine Blizz 20 MD Orange 20 × 10.0" - Children's Bike
2 colors
Rock Machine Blizz 20 MD Orange 20 × 10.0"
Children's Bike - children's bike 20" wheel, without suspension, meant for recreational use, aluminium frame, frame height: 250mm, with Without theme theme, light weight, pedals included, for children weighing up to 120kg, 2024 model
187,890 Ft
Buy
In stock 3 pcs
Order Code: SPTRoMa056
Rock Machine Blizz 24 HD Orange 24×12.5" - Children's Bike
Rock Machine Blizz 24 HD Orange 24×12.5"
Children's Bike - children's bike 24" wheel, without suspension, meant for recreational use, aluminium frame, frame height: 320mm, with Without theme theme, light weight, pedals included, 2024 model
211,390 Ft
Buy
In stock 3 pcs
Order Code: SPTRoMa058
Yedoo Koolo 16 pink - Children's Bike
4 colors
Yedoo Koolo 16 pink
Children's Bike - children's bike 16" wheel, for girls from the age of 3 years, without suspension, meant for recreational use, aluminium frame, with Without theme theme, light weight, freewheel, pedals included and low Step, for children weighing up to 50kg
177,290 Ft
Buy
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: SPTyed208
ACADEMY S-GRADE Trail 4 R Space - Children's Bike Free delivery
to Alza branch
2 colors
ACADEMY S-GRADE Trail 4 R Space
Children's Bike - trail bike from the age of 6 years, front suspension fork, aluminium frame
New arrival 325,890 Ft
Buy
In stock 1 pcs
Order Code: SPTacd122
ACADEMY S-GRADE Trail 4 Space - Children's Bike Free delivery
to Alza branch
2 colors
ACADEMY S-GRADE Trail 4 Space
Children's Bike - trail bike 20" wheel from the age of 6 years, front suspension fork, meant for sports use, aluminium frame, frame height: 240mm, with Without theme theme, for children weighing up to 70kg
386,990 Ft
Buy
In stock 1 pcs
Order Code: SPTacd104
Academy Grade 6 26-7S Nexus belt Yellow - Children's Bike Free delivery
to Alza branch
6 colors
Academy Grade 6 26-7S Nexus belt Yellow
Children's Bike - children's bike 26" wheel from the age of 10 years, without suspension, aluminium frame
321,790 Ft
Buy
In stock 1 pcs
Order Code: SPTacd054
AUTHOR Cosmic 20 2026 10" Blue/White - Children's Bike
3 colors
AUTHOR Cosmic 20 2026 10" Blue/White
Children's Bike - children's bike 20" wheel from the age of 4 years, without suspension, meant for recreational use, aluminium frame, frame height: 254mm, frame size: XS, with Without theme theme, light weight, for children weighing up to 30kg, 2026 model
New arrival 137,540 Ft
Buy
In stock > 5 pcs
Order Code: SPTautko278
AUTHOR Record 20 2025 10" White/Silver/Red - Children's Bike
2 colors
AUTHOR Record 20 2025 10" White/Silver/Red
Children's Bike - children's bike 20" wheel from the age of 4 years, without suspension, meant for recreational use, aluminium frame, frame height: 254mm, frame size: XS, light weight, for children weighing up to 30kg, 2025 model
New arrival 152,840 Ft
Buy
In stock > 5 pcs
Order Code: SPTautko275
AUTHOR Cosmic 20 2025 10" Black/Orange - Children's Bike
AUTHOR Cosmic 20 2025 10" Black/Orange
Children's Bike - children's bike 20" wheel from the age of 4 years, without suspension, meant for recreational use, aluminium frame, frame height: 254mm, frame size: XS, light weight, for children weighing up to 30kg, 2025 model
New arrival 122,240 Ft
Buy
In stock > 5 pcs
Order Code: SPTautko273
AUTHOR Record 16 2025 9" white/pink/purple - Children's Bike
3 colors
AUTHOR Record 16 2025 9" white/pink/purple
Children's Bike - children's bike 16" wheel, for girls from the age of 3 years, without suspension, meant for recreational use, aluminium frame, frame height: 229mm, frame size: XS, with Without theme theme, light weight, freewheel, for children weighing up to 30kg, 2025 model
New arrival 122,240 Ft
Buy
In stock > 5 pcs
Order by midnight, get it at the AlzaBox in the morning.
Info
Order Code: SPTautko271
AUTHOR A-Matrix 24D 2026 12.5" Matte Titanium/Black/Red - Children's Bike
3 colors
AUTHOR A-Matrix 24D 2026 12.5" Matte Titanium/Black/Red
Children's Bike - children's bike 24" wheel from the age of 8 years, spring fork and front suspension fork, meant for sports use, aluminium frame, frame height: 318mm, frame size: XS, light weight, with disc brakes, for children weighing up to 50kg, 2026 model
New arrival 183,440 Ft
Buy
In stock 4 pcs
Order Code: SPTautko281
Joiride ultra light 24" růžová/tmavě šedá - Children's Bike
3 colors 4 sizes
Joiride ultra light 24" růžová/tmavě šedá
Children's Bike - children's bike 24" wheel from the age of 10 years, without suspension, meant for recreational use, aluminium frame, frame size: M, pedals included, for children weighing up to 80kg
193,390 Ft
Buy
In stock > 5 pcs
Order Code: SPTjoir012
Lightweight Kids’ Bikes Lightweight Girls' Bikes Girls' Boys' Bikes Boys' Kids' Bicycles - 2 to 3 Years 2-3 Years Kids' Bicycles - 4 to 6 Years 4 to 6 Years Kids' Bicycles - 7 to 9 Years 7 to 9 Years Children's Bikes 26" Diameter 26" Children's Bikes 24" Diameter 24" Children's Bikes 20" Diameter 20" Children's Bikes 16" Diameter 16" 14" Kids’ Bikes Diameter 14" Children's Bikes 12" Diameter up to 12" Kids' Electric Bikes Electric Bikes Bike Training Wheels Training Wheels Balance Bikes Balance Bikes Servis kola bez starostí Jak vybrat dětské kolo
 

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In the category Kids' Bicycles on Alza.hu, we currently have a total of 202 products, which you can easily buy online and get quickly delivered. See all of your purchases and make orders on our easy-to-use app.
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