Cortina E-U4 E-Bike Men 28" 61cm Disc 7S - Black Mat

EAN 8719461062602
Brand: Cortina
Product Model: 915124

In Stock : +/- 4-8 Business Days

Information
Manuals & Videos
Size Chart
Supplier Info

This e-bike from Cortina is designed for practical daily transport, comfortable city riding, and reliable commuting, offering the familiar stability of a classic transport bike. The E-U4 features a high aluminum frame paired with a Bosch Active Line Smart mid motor that provides smooth, natural support up to 25 km/h, making stop-and-go traffic, bridges, and everyday rides feel easier and more relaxed. The Shimano Nexus 7-speed hub gear ensures simple and dependable shifting, while hydraulic disc brakes deliver confident braking performance in changing weather and busy urban conditions. A front carrier, double kickstand, steering lock, integrated lighting, and ART-approved frame lock enhance its practicality for everyday use. Please note that this bike is supplied with a battery and charger.

- Transport e-bike for daily commuting, city riding, and practical everyday use
- Bosch Active Line Smart mid motor delivers smooth support with 40 Nm torque
- Shimano Nexus 7-speed hub gear for simple and reliable shifting
- Hydraulic disc brakes provide strong and controlled braking performance
- Front carrier adds practical space for bags and daily cargo
- Double kickstand supports stable parking and loading
- Steering lock helps keep the bike steady when parked
- Integrated e-bike lighting improves visibility in daily traffic
- ART-approved frame lock adds extra security for city use
- Supplied with a battery and charger.

Specifications
Brand: Cortina
Model: E-U4 Transport
Type: E-Bike
Intended Use: City riding, commuting, everyday transport
Weight: 23.50 kg excl. battery
Frame Size: 61 cm
Max Load: 120 kg
Fork Details: Fixed front fork
Wheel Size: 28"
Brake Type: Hydraulic disc brake
Brake Model: Shimano
Brake Levers: Dual hand brake
Drivetrain: Shimano Nexus
Speed: 7-speed
Drivetrain Type: Chain drive
Rear Hub: Shimano Nexus 7-speed hub
Tires: Cortina Canberra, 28 x 1.75"
Handlebar: Not specified
Stem: Fixed
Grips: Cortina Dakar
Saddle: Selle Royal Witch
Motor Model: Bosch Active Line Smart System mid motor
Motor Torque: 40 Nm
Display: Bosch Purion 200
Charger Included: No
Front Light: Cortina Amsterdam 18 lux powered by e-bike system
Rear Light: Union 4370 powered by e-bike
Rack: Front carrier, MIK-HD compatible
Kickstand: Double kickstand
Lock: Abus Amparo 4650
Color: Jet black matt

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 Bicycle Size Chart
Age (Years)	Clothing Size	Length	Recommended 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.

Body Length	Inseam Length	Recommended Bike Size
120 - 140 cm	<52 cm	16 inch
52 - 74 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

Inseam Length		Recommended 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.