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£ 263.80 £ 196.11

Alpina Trial Boys Bicycle 16" Brake Hub - Matt Space Black

In Stock +/- 2 Business Days

Can your child not wait to go on adventure rides?
Then of course you think about safety.
The powerful and reliable coaster brake of the Alpina Trial, together with the handbrake on the front, ensures that it can cruise smoothly, but also can stop quickly.
Reflectors are attached to the front and rear and even in the wheels so that your little daredevil is clearly visible to other traffic.
Nice and light in weight thanks to the aluminum frame, cycling is such a breeze!

- Aluminum frame
- Plastic mudguards
- Handbrake with coaster brake

Brand: Alpina
Color specific: Space Black Matt
Frame height: 25
Color code: PMS 432 Matt
Number of gears: 1
Frame type: Boys
Gear system brand: Unbranded
Brake system: Front hand brake and coaster brake
Gear System Type: Fixed
Wheel size: 16
Luggage carrier: None
Bicycle bell: Yes
Frame Material: Aluminum
Grips: Alpina
Weight: 10
Color code touch-up pen: Space Black PMS 432 Matt
Front brake system brand: Unbranded
Model year: 2021
Brake type: Coaster brake + front v-brake
Kickstand: Yes
Stem: Fixed
Handlebar: No
Tire type: Wanda
Front brake system type: VBK
Lock: None
Taillight: None
Lighting power supply: Battery
Headlight: None
Front carrier: No
Fork: Fixed
Saddle: Alpina
Seatpost: Fixed
Inseam: > 50 cm
Clothing size: 104 - 116
Customer group: Boys

Children are generally taught to ride a bike at an early age. 
The right size bicycle allows for a comfortable and safe riding position for children and teens, and stimulates maximum performance of the muscles. 
Aside from being less tiring and preventing overexertion of the knees, the right size bike encourages regular bike use and cycling in general. 
This size is usually based on the wheel diameter. 


Children's bicycles size chart
Children's Bicycle Size Chart



Clothing Size

Children's Bike Size

2-4 98-104 ≈95 cm 12 inch
3-5 100-106 ≈100 cm 14 inch
4-6 104-110 ≈105 cm 16 inch
5-7 110-116 ≈110 cm 18 inch
6-8 116-122 ≈115 cm 20 inch
7-9 122-128 ≈122 cm 22 inch
8-12 128-140 ≈130 cm 24 inch
10-14 140-152 ≈145 cm 26 inch

This sizing chart for children's bicycles is based on age and length. 
Not everyone is the same length at a certain age, so it’s advisable to determine the bicycle size based on length. 
The most important factor in determining the right bike size, is the inseam length. 


Recommended Bike Size Cycling lesson
120-140 cm < 52 cm 16 inch
52-75 cm 20 inch
< 74 cm 24 inch
140-160 cm < 62 cm 20 inch
62-80 cm 24 inch
> 80 cm 26 inch
> 160 cm < 74 cm 24 inch
> 74 cm 26 inch

Most children that are 120 to 140 cm tall can ride a 20 inch bike, while children between 140 and 160 cm tall can ride a 24 inch bike. 
A 26 inch bike is generally suitable for teenagers who are over 160 cm tall. 
The right frame height is also very important: 
it is the first step to finding the correct riding position. 
A bicycle frame that is too small or too large can lead to limited height adjustment options, which in turn may lead to an inconvenient height difference between the saddle and handlebars. 
Use the inseam length to determine which frame size is right for you. 
You can do this by measuring the inside of your leg, from the top of the thigh down to the floor


Adult Bicycle Size Chart Adult Cycling Size Chart
Inseam Length
Frame Size
≈ 66 cm 43 cm
≈ 74 cm 48 cm
≈ 77 cm 50 cm
≈ 78 cm 51 cm
≈ 80 cm 52 cm
≈ 83 cm 54 cm
≈ 85 cm 55 cm
≈ 86 cm 56 cm
≈ 89 cm 58 cm
≈ 91 cm 61 cm
≈ 93 cm 65 cm

Choose the frame size closest to your results. 
When in doubt, it’s best to pick the smaller frame size. 
If you have any questions about determining the right bicycle size, you can always give us a call or send us an e-mail. 


Alpina produces awesome children’s bikes for boys and girls aged 3 to 12 years old.
Quality and safety are of paramount concern to Alpina.
And since children want their bicycles to look cool and reflect their personality, Alpina also pays a lot of attention to the concept and design of its children's bicycles.

When your child is learning how to ride a bike, it’s important to have the right children’s bicycle: high-quality materials poured into a modern and safe design.
Alpina understands the need for safety and fun and equips all Alpina bicycles with excellent brakes and lights.

£ 263.80 £ 196.11
£ 263.80 £ 196.11
In Stock +/- 2 Business Days
  • Over 120.000 products
    Over 120.000 products

  • International delivery
    International delivery

  • Fast service with a rating of 8.9/10
    Fast service with a rating of 8.9/10

  • Over 3 million satisfied customers
    Over 3 million satisfied customers

  • A 30-day cooling-off period and 2-year warranty
    A 30-day cooling-off period and 2-year warranty
Do you have any questions?

Our team of enthusiastic colleagues is ready to help you.

+31 (0)70 - 300 00 44
Do you have any questions?
  • Fast delivery
  • International delivery
  • 8.9/10 customer reviews
  • 2 year warrantee
  • Webshop Trustmark
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