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  • AKEZ S2 Review: 500W Electric Fat Bike

AKEZ S2 Electric Fat Bike 500W – Review and Comparison

€899.00

All-terrain electric fat bike with 500W brushless motor (marketed as 750W) and wide 20x4.0 inch tyres.

Removable 48V 13Ah (624 Wh) battery delivering 35–45 miles of range in pedal-assist mode, with dual battery option to double your range.

Front and rear dual suspension, Shimano 7-speed drivetrain and mechanical disc brakes to tackle any terrain.

Description

The AKEZ S2 is an all-terrain electric fat bike equipped with wide 20x4.0 inch tyres and a brushless motor. The official spec sheet states a 500W motor, while the marketing description mentions 750W. With its removable 48V 13Ah (624 Wh) lithium-ion battery, it promises a range of 35–45 miles in pedal-assist mode and 32+ miles (50 km) in pure electric mode. Its high-strength steel frame, dual suspension and wide tyres make it a bike built for off-road adventure.


Who is this bike for?

This model is particularly suited for:

  • Off-road enthusiasts: trails, forest paths, beaches, snow
  • Cyclists seeking an affordable fat bike with dual battery option
  • Users wanting three riding modes (pedalling, assist, pure electric)
  • Riders who appreciate the scooter/moped style on a fat bike

Performance and range

The AKEZ S2 features a brushless rear hub motor rated at 500W on the spec sheet (750W in marketing materials). The claimed top speed is 28 MPH (45 km/h).

  • Battery: 48V 13Ah removable lithium-ion (624 Wh)
  • Range in pedal-assist mode: 35–45 miles (approx. 56–72 km)
  • Range in pure electric mode: 32+ miles (50 km)
  • Dual battery option (2x 13Ah = 26Ah): double the range, up to 90 miles claimed
  • Charge time: 4–5 hours

In real-world conditions, range depends on:

  • Rider weight and cargo load
  • Riding mode and assist level (5 PAS levels)
  • Terrain (flat, uphill, off-road)
  • Weather conditions and tyre pressure

Comfort and equipment

The S2 prioritises all-terrain comfort with its dual suspension (aluminium front fork + coil rear shock) and wide 20x4.0 inch tyres that absorb bumps and provide excellent grip.

  • High-strength steel frame
  • Front and rear mechanical disc brakes with motor cutoff
  • Shimano 7-speed drivetrain
  • M5 LCD display (speed, battery level, mileage, PAS level)
  • Front LED headlight with integrated horn
  • Rear brake light
  • Comfort ergonomic saddle
  • Twist throttle
  • Aluminium alloy pedals
  • Maximum load: 330 lbs (150 kg)

Recommended rider height: 5'2" to 6'5" (157 to 196 cm). Bike dimensions: 166x72x106 cm.


Strengths

✔ Dual battery option to double your range (up to 90 miles claimed)
✔ Wide 20x4.0 inch tyres for all terrains
✔ Front and rear dual suspension for solid comfort
✔ Generous 150 kg maximum load capacity
✔ Three riding modes (pedalling, assist, pure electric)
✔ Affordable price for an all-terrain fat bike
✔ Handy removable battery


Weaknesses

❌ Not road-legal in Europe (500W nominal, 45 km/h)
❌ Mechanical brakes (not hydraulic) despite the weight and power
❌ Steel frame heavier than aluminium
❌ Bike weight not specified (only gross weight with packaging given: 38 kg)
❌ Discrepancy between claimed power (750W marketing vs 500W spec sheet)
❌ Lesser-known brand in Europe, limited after-sales service network


Comparison and positioning

The AKEZ S2 positions itself as an entry-level all-terrain electric fat bike, with a strong selling point: the ability to double the range via the dual battery option. Compared to rivals like the ENGWE EP-2 or other foldable fat bikes in the same price bracket, it stands out with its dual suspension and 150 kg load capacity.

However, its mechanical brakes and steel frame are common trade-offs at this price point. The discrepancy between the motor power stated on the spec sheet (500W) and that highlighted in marketing (750W) deserves attention: it is difficult to know the actual nominal power.

⚠ Note on regulations: with a motor power of 500W (or even 750W) and a top speed of 45 km/h, the AKEZ S2 exceeds the thresholds of the European EPAC directive (250W / 25 km/h). This bike is classified as Off-road and cannot be legally used on public roads in Europe without proper registration. It is intended for use on private land or permitted trails.


This bike is right for you if:

✔ you are looking for an affordable all-terrain fat bike
✔ you want the option to double your range with a second battery
✔ you ride on trails, forest paths, the beach or snow
✔ you appreciate dual suspension for off-road comfort
✔ road approval is not a priority


This bike is NOT right for you if:

❌ you need a bike approved for public roads in Europe
❌ you require hydraulic brakes
❌ you are looking for a light bike that is easy to transport
❌ you want a brand with an established after-sales service network in Europe
❌ you desire perfectly clear specifications on motor power

Specifications

  • Claimed Range (manufacturer)
    72 Km
  • Battery Capacity
    624 Wh
  • Battery brand
    Unbranded
  • Battery (V/Ah)
    48V / 13Ah
  • Bike type
    All-terrain
    Fatbike
  • Rated motor power
    500W
  • Motor position
    Rear hub
  • Motor brand
    Unbranded
  • EU Certification
    Off-road
  • Weight (with battery)
    38 Kg
  • Sensor type
    Cadence sensor
  • Max assisted speed
    45 km/h
  • Walk assist / Throttle
    Yes
  • Number of gears
    7
  • Drivetrain
    Chain
  • Drivetrain brand
    Shimano
  • Braking system
    Front/Rear mechanical disc
  • Maximum load
    150 Kg
  • Warranty period
    1 year
  • Suspension
    Full suspension (Front/Rear)
  • Style
    Moto / Scrambler

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