Menu

Didn't find delivery to your country?

Our team is here for you

+43 144 20070
+43 144 20070

Mon - Fr: 10 am to 3 pm

info@koloshop24.com
info@koloshop24.com

We will reply within 24 hours

Contact Us Contact Us

496.99 €

Academy Grade 4 children's bike 20" yellow

Did you find a better price?
If possible, we will give you an even better one. Don't hesitate to write to us.

Ask for a better price
Our Code: A8868

20" children's bike, for kids from 115 cm (ages 6-8), aluminum frame and fork, adjustable stem, Shimano Claris / Microshift 1x8sp. gearing, weight 7.5 kg.

Detailed Description
Academy

The ACADEMY brand originates from Germany and specializes in lightweight and ergonomic children's bicycles, designed with a focus on the proper development of the child and the joy of riding. With…

More about the brand Academy
Need any help?
Radek - Technical Support
Radek Technical Support
Contact Me

20" children's bike, for kids from 115 cm (ages 6-8), aluminum frame and fork, adjustable stem, Shimano Claris / Microshift 1x8sp. gearing, weight 7.5 kg.

Detailed Description
In stock
An expedition is possible tomorrow (delivery options)
Price Including VAT 496.99 €
Add to Favourites Add to comparison Watchdog

Do you have a VAT number? Shop without VAT.

Shipping from 90.00 €
Returns possible
within 30 days

Description

The Academy Grade 4 is a lightweight 20" children's bike with high-quality components, suitable for kids from 115 to 130 cm tall, aged 6 to 8 years.

The weight of the bike significantly influences how much children enjoy their ride. A quality children's bike must be light and easily adaptable. That's why the bike weighs only 7.5 kg and is equipped with high-quality components. The lowered top tube makes it easier for children to get on and off the bike.

Stem
The patented Syntace Vario stem grows with children in height and length. It is smoothly adjustable and 100% stable in every position.

Q-Factor
The Q-factor describes the overall width of the pedal cranks and plays an important role in the efficiency of pedaling. Ideally, the bike's Q-factor should match the rider's natural step width. A smaller Q-factor is more ergonomic, while a too-large Q-factor forces the legs into an "X" shape during pedaling. This prevents ergonomic, smooth pedaling and can lead to knee pain and quick fatigue. Academy bikes have one of the smallest Q-factors on the market and are therefore ideally designed for children.

Saddle

The flat saddle provides maximum support and prevents slipping off. The optimal saddle cover (neither too soft nor too hard) prevents sinking in and offers a comfortable and secure seat, enhancing both comfort and riding pleasure!

Tires
Since Academy children's bikes focus on the power-to-weight ratio for children, the bike features lightweight and narrow VEE TIRE Rail tires. Their tread pattern makes them ideal for both city rides and gravel paths. Additionally, they look great and provide necessary visibility in traffic thanks to the reflective stripes.

Designed by SCOOL

The developers of Academy bikes, in collaboration with the German Institute for Orthopedics, Osteopathy, and Sports Medicine (DIOOS) led by Dr. Andreas Elsner, have managed to develop ultra-light children's bikes that meet the latest ergonomic requirements. All models weigh less than 40% of the average child's weight, and frames with low and narrow bottom brackets allow children to pedal effortlessly. The short cranks and upright seating position always enable them to reach the ground with their feet, ensuring an ergonomic knee position while riding.

EAN: 4250969288681

Size chart

Wheel size Height (cm) Approximate age Models
12"
from 85 cm
from 1.5 years Grade 1
14" from 95 cm 2-4 years Grade 2
16" 105-120 cm 4-6 years Grade 3
20" 115-130 cm 6-8 years Grade 4, Trail 4, Pump 4
24" 130-145 cm 7-11 years Grade 5, Trail 5, Pump 5, Gravel 5
26" 140-165 cm 10-14 years Grade 6, Trail 6, Pump 6
27.5" from 165 cm from 14 years Gravel 7, Trail 7

Manufacturer: coolmobility GmbH, Ludwig-Erhard-Allee 3, 33719 Bielefeld, 0521 32 99 88 22, shop@coolmobility.de, www.academy-bikes.de

Specifications

Frame Set
Frame

Aluminum with triple butting

Fork

aluminum

Wheels
Tires

VEE TIRE Rail 20" x 1.50 (40-406), Skinwall Synthesis, reflective stripes, 90 TPI

Rims

20" x 1.5" x 20H, aluminum, black

Hubs

Aluminum, 14G/20H, black, QR

Drivetrain
Shifters

Microshift, rapidfire, 7-speed

Rear Derailleur

Microshift RD-M26S, short cage

Crankset

ACADEMY 30T, 115mm, aluminum

Cassette

Sunrace 11-28T

Bottom Bracket

Thun Go(A)l 120L, 122mm

Components
Handlebars

560 mm, double-butted aluminum, 20 mm rise

Stem

Syntace VRO system / COMOA AHEAD Ergoline / 560 mm, 20 mm ACADEMY 30T, 115mm, AL

Grips

Velo black

Brakes

V-Brake, aluminum

Brake Levers

aluminum, 3-finger

Seatpost

AL 27.2 mm x 250 mm

General Information
Weight

7.5

Frame Material

Aluminum Alloy

Colour

Yellow

Activity

Cycling With the Kids

The manufacturer reserves the right to change the specifications of the bicycles without giving any reasons. In exceptional cases, the delivered product may differ from the listed specifications and images due to improved availability or functionality of the bicycle.

Academy

The ACADEMY brand originates from Germany and specializes in lightweight and ergonomic children's bicycles, designed with a focus on the proper development of the child and the joy of riding. With…

More about the brand Academy

Do you need help choosing the right product?
Contact us.

Ask a question
+43 144 20070 Mon - Fri: 10:00 am to 15:00 pm
Radek - Technical Support
Radek Technical Support

Product reviews

Similar Products

W011225
Woom GO 4 children's bike 20" Metallic Turquoise
In stock
Woom GO 4 children's bike 20" Metallic Turquoise

Children's bike, 20" wheel diameter, lightweight aluminum frame, rigid front fork, for ages 6-8, for height 115-130 cm, weight 7.8 kg, chain guard, weight…

1 reviews
579.00 €
Buy
W011222
Woom GO 4 kids bike 20" Red
In stock
Woom GO 4 kids bike 20" Red

Children's bike, 20" wheel diameter, lightweight aluminum frame, rigid front fork, for ages 6-8 years, for height 115-130 cm, weight 7.8 kg, chain guard,…

1 reviews
579.00 €
Buy
W011223
Woom GO 4 children's bike 20" Vibrant Yellow
In stock
Woom GO 4 children's bike 20" Vibrant Yellow

Children's bike, wheel diameter 20", lightweight aluminum frame, rigid front fork, for ages 6-8, for height 115-130 cm, weight 7.8 kg, chain guard, weight…

579.00 €
Buy
W011226
Woom GO 4 children's bike 20" Metallic Blue
In stock
Woom GO 4 children's bike 20" Metallic Blue

Children's bike, 20" wheel diameter, lightweight aluminum frame, rigid front fork, suitable for ages 6-8, for height 115-130 cm, weight 7.8 kg, chain guard,…

579.00 €
Buy
103249ca26
Cannondale Kids Trail Plus 20 kids bike MDN
In stock
Cannondale Kids Trail Plus 20 kids bike MDN

A children’s 20" trail bike for off-road riding, with wider tires for stability and more confident handling on trails.

579.00 €
Buy
82896ca23
discount -17%
Cannondale Quick 20 children's bike ORC
In stock
Cannondale Quick 20 children's bike ORC

Children's bike, lightweight aluminum frame, 20" wheels with Kenda tires, fixed fork, MicroShift 1x7sp.gearing, kickstand.

454.99 €
Buy
506534
Beany Blaster XC 20 kids' bike White
In stock
Beany Blaster XC 20 kids' bike White

Children's bike 20", aluminum frame and fork, 1x8 speeds, Shimano disc brakes, frame size 10", suitable for height 110 cm - 130 cm, weight 7.9 kg, load…

539.00 €
Buy
506541
Beany Blaster XC 20 children's bike Black
In stock
Beany Blaster XC 20 children's bike Black

Children's bike 20", aluminum frame and fork, 1x8 gears, Shimano disc brakes, frame size 10", suitable for heights 110 cm - 130 cm, weight 7.9 kg, carrying…

539.00 €
Buy
blasterXC20mint
Beany Blaster XC 20 kids bicycle Mint
In stock
Beany Blaster XC 20 kids bicycle Mint

Children's bike 20", aluminum frame and fork, 1x8 speeds, Shimano disc brakes, frame size 10", suitable for a height of 110 cm - 130 cm, weight 7.9 kg, maximum…

539.00 €
Buy
blasterXC20gold
Beany Blaster XC 20 children's bike Gold
In stock
Beany Blaster XC 20 children's bike Gold

Children's bike 20", aluminum frame and fork, 1x8 speeds, Shimano disc brakes, frame size 10", suitable for height 110 cm - 130 cm, weight 7.9 kg, load…

1 reviews
539.00 €
Buy
CA97697
discount -6%
Cannondale Trail Plus 20 children's bike Salmon
In stock
Cannondale Trail Plus 20 children's bike Salmon

Children's mountain bike, aluminum frame, aluminum rigid fork, MicroShift 1x7 shifter, mechanical disc brakes, wide 20 x 2.6" tires.

539.00 €
Buy
801.2026.20002
Superior F.L.Y. 20 VB children's bike Gloss Yellow
In stock
Superior F.L.Y. 20 VB children's bike Gloss Yellow

Children's bike Superior F. L. Y. 20 VB, lightweight aluminum frame, 1x7sp. gearing, rigid aluminum fork, weight 7.95 kg, for children 100-130 cm.

539.00 €
Buy
801.2026.20003
Superior F.L.Y. 20 VB kids bike Matte Teal
In stock
Superior F.L.Y. 20 VB kids bike Matte Teal

Children's bike Superior F. L. Y. 20 VB, lightweight aluminum frame, shifting 1x7 speed, rigid aluminum fork, weight 7.95 kg, for children 100-130 cm.

539.00 €
Buy
801.2026.20004
Superior F.L.Y. 20 VB kolo Gloss Purple 9.0"
In stock
Superior F.L.Y. 20 VB kolo Gloss Purple 9.0"

Children's bike Superior F. L. Y. 20 VB, lightweight aluminum frame, shifting 1x7 speed, rigid aluminum fork, weight 7.95 kg, for children 100-130 cm.

539.00 €
Buy
BR20-SG-2-IC
discount -10%
Early Rider Belter 20 Auto Sage Green children's bike 2025
In stock
Early Rider Belter 20 Auto Sage Green children's bike 2025

20" children's bike, for kids aged 6-8, weight 7.7 kg, seat height 50 cm, tires 20x2.0", belt drive, 2-speed derailleur, rim brakes

599.00 €
Buy
82834ca23
discount -10%
Cannondale Kids Trail Plus 20 ORG children's bike
In stock
Cannondale Kids Trail Plus 20 ORG children's bike

Children's mountain bike, aluminum frame, aluminum rigid fork, MicroShift 1x7 gearing, mechanical disc brakes, wide 20 x 2.6" tires.

519.00 €
Buy
BR20-BR-3-IC
discount -6%
Early Rider Belter Auto 20" kids bike Brushed Aluminium 2026
In stock
Early Rider Belter Auto 20" kids bike Brushed Aluminium 2026

20" children’s bike, for children aged 6–8, weight 7.7 kg, saddle height 50 cm, 20x2.0" tires, belt drive, 2-speed derailleur, rim brakes

609.00 €
Buy
R004818
Rascal 20 children's bicycle Raspberry
In stock
Rascal 20 children's bicycle Raspberry

Super lightweight children’s bike with an original aluminum frame, belt drive, and 3-speed Sturmey Archer hub gear.

4 reviews
619.00 €
Buy
R004760
Rascal 20 children's bicycle Titanium
In stock
Rascal 20 children's bicycle Titanium

Super lightweight children's bike with an original aluminum frame, belt drive, and a 3-speed Sturmey Archer planetary gearbox.

1 reviews
619.00 €
Buy
R004759
Rascal 20 children's bike Flame
In stock
Rascal 20 children's bike Flame

A super lightweight children's bike with an original aluminum frame, belt drive, and a 3-speed Sturmey Archer planetary gear hub.

3 reviews
619.00 €
Buy

Für Versand nach Deutschland, besuchen Sie bitte Academy Grade 4 Kinderfahrrad 20" gelb

Für Versand nach Österreich, besuchen Sie bitte Academy Grade 4 Kinderfahrrad 20" gelb

Chcesz dostarczyć towar do Polski? Sprawdź Academy Grade 4 rower dziecięcy 20" żółty

Chcete doručit zboží do České republiky? Prohlédněte si Academy Grade 4 dětské kolo 20" žlutá

Chcete doručiť tovar na Slovensko? Pozrite si Academy Grade 4 detský bicykel 20" žltá

More than 20 years of cycling expertise
More than 20 years of cycling expertise

Proven quality you can trust

Leading brands
Leading brands

Handpicked and quality-checked

Expert advice
Expert advice

Our team helps you find your perfect fit

Our team is here for you
+43 144 20070
+43 144 20070

Mon - Fr: 10 am to 3 pm

info@koloshop24.com
info@koloshop24.com

We will reply within 24 hours