Air 28 250W Electric Bike for Adults, 28" Urban eBike, 36V 9.6Ah Battery, Up to 25 km/h, Up to 100 km Range - Light Yellow

Electric bike

Air 28 250W Electric Bike for Adults, 28" Urban eBike, 36V 9.6Ah Battery, Up to 25 km/h, Up to 100 km Range - Light Yellow

  • 250W motor
  • 346Wh battery
  • 100 km range
  • 28″ wheels
£699.00

Colour: Light Yellow

  • Free UK deliveryEstimated 3–7 business days after dispatch
  • Dispatched in 1–2 business daysTracking number sent by email
  • ReturnsUnused and boxed — see our Refund Policy

Listed at 250W, assist to 25 km/h — within the UK EAPC power and speed limits, so no licence, tax or insurance is needed to ride it on the road (riders must be 14+). GOV.UK e-bike rules

Questions about this bike? +44 7216 788723 · support@kolmaax.site

Spec dashboard

The numbers, at a glance

Read from the listing. Ranges are the manufacturer's stated figures: hills, wind, cold and higher assist levels shorten them.

Motor250Wrated power
Battery346Wh36V × 9.6Ah (calculated)
Range100kmmanufacturer stated
Assist to25km/h≈ 15.5 mph
Wheels28″wheel size

250W Brushless Hub Motor

The Air 28 is equipped with a 250W brushless rear hub motor designed for urban commuting and everyday riding. The motor works with a torque sensor to provide pedal assistance based on rider input.

36V 9.6Ah Removable Battery

The bike features a 36V 9.6Ah removable lithium battery integrated into the seat post design. The battery can be removed for charging and supports a manufacturer-stated assisted range of up to 100 km per charge.

Carbon Belt Drive System

The carbon belt drive replaces a traditional chain system and is designed for low-maintenance operation. The belt drive system does not require chain lubrication and is resistant to rust.

Torque Sensor Pedal Assist

The integrated torque sensor measures pedalling input and adjusts motor assistance accordingly for a more responsive riding experience.

28-Inch Urban Tyres

The Air 28 is fitted with 28-inch puncture-resistant tyres designed for commuting, city riding, and paved-road cycling.

Adjustable Front Suspension Fork

The front suspension fork includes lockout functionality and adjustable shock absorption for varying road conditions.

Hydraulic Disc Brakes

Front and rear hydraulic disc brakes provide braking performance for urban riding and daily commuting.

IPS Colour Display

The 3.5-inch IPS colour display provides access to riding information including speed, battery level, pedal-assist settings, and trip data.

Integrated Lighting System

The bike includes an automatic sensor front light and an electric rear light for improved visibility.

Product Specifications

• Type: Urban Electric Bike
• Motor: 250W Brushless Hub Motor
• Battery: 36V 9.6Ah Removable Lithium Battery
• Battery Capacity: 345.6Wh
• Top Speed: 25 km/h
• Range: Up to 100 km
• Torque: 37 Nm
• Drive System: Carbon Belt Drive
• Transmission: Single Speed
• Pedal Assist: Torque Sensor
• Suspension: Adjustable Front Suspension Fork
• Brakes: Hydraulic Disc Brakes
• Display: 3.5″ IPS Colour Display
• Tyre Size: 700 x 45C (28″)
• Rider Height: 160–210 cm
• Maximum Load Capacity: 120 kg
• Charging Time: 4–6 Hours
• Frame Material: Aluminium Alloy
• Weight: Approximately 21.5–23 kg
• Certifications: SGS CE

Package Includes

• 1 × Air 28 Electric Bike
• 1 × Removable Battery
• 1 × Battery Charger
• 1 × Rear Rack
• 1 × Pair of Fenders
• 1 × Installation Tool Kit
• 1 × Battery Lock

Orders are processed within 1–2 business days (Monday to Friday); orders placed at weekends or on public holidays are processed the next business day. Estimated delivery is 3–7 business days within the United Kingdom.

Standard shipping is free on all orders, with no additional shipping fees at checkout.

Once your order ships you'll receive a confirmation email with a tracking number. Read the full Shipping Policy.

To start a return, email support@kolmaax.site with your full name, order number and reason for return (with photos if the item is damaged, defective or incorrect). Items must be unused, in their original packaging and complete with all accessories and parts.

If an item arrives damaged, defective or incorrect, contact us within 48 hours of delivery. Read the full Refund Policy.

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