GUNAI MX25 Electric Fat Bike 1000W – Review and Comparison

The GUNAI MX25 is an off-road electric fat bike equipped with a 1000W brushless motor and a removable 48V 25Ah battery (1200 Wh). With its wide 20x4.0 inch tyres and 120 mm front suspension fork, it is designed for rough terrain and challenging trails. Its sturdy aluminium alloy frame supports a maximum load of 200 kg and the bike weighs 37 kg total.

Who is this bike for?

This model is particularly suited for:

• Off-road enthusiasts and rough trail riders
• Cyclists looking for a powerful fat bike with a large battery
• Riders needing a very high maximum load capacity (200 kg)
• Three riding modes: pedalling, pedal assist and throttle only

Performance and range

The GUNAI MX25 is powered by a 1000W brushless motor delivering up to 65 Nm torque, paired with a Shimano 7 speed transmission to suit all terrain types.

• Battery: 48V 25Ah removable lithium-ion (1200 Wh)
• Claimed range on pedal assist: 70 to 75 km
• Claimed range on throttle only: 40 to 45 km
• Claimed maximum speed: 45 to 50 km/h

In real world conditions, range depends on:

• Rider weight and cargo
• Riding mode used
• Terrain (flat, uphill, trails)
• Temperature and tyre pressure

Comfort and equipment

The front suspension fork with 120 mm travel absorbs shocks for a much smoother ride on uneven terrain. The wide 20x4.0 inch tyres offer excellent grip and stability.

• Front and rear hydraulic brakes
• Smart LCD display for riding data
• Bike weight: 37 kg
• Maximum load: 200 kg
• Dimensions: 171x60x110 cm

Strengths

✔ Powerful 1000W motor with 65 Nm torque
✔ Large 48V 25Ah battery (1200 Wh) for great off-road range
✔ Wide 20x4.0 inch tyres for maximum grip
✔ Very high maximum load of 200 kg
✔ Front and rear hydraulic brakes
✔ Three riding modes

Weaknesses

❌ Heavy weight of 37 kg
❌ Not road legal (1000W, max speed 50 km/h)
❌ GUNAI is a relatively unknown brand in Europe
❌ No rear suspension
❌ Assistance sensor type not specified by the manufacturer

Comparison and positioning

The GUNAI MX25 positions itself as a powerful and affordable off-road electric fat bike, intended exclusively for off-road use. With its 1000W motor and 1200 Wh battery, it offers an excellent power to capacity ratio in this price range.

Against road legal 250W fat bikes, it clearly prioritises raw power and range over regulatory compliance. This is a deliberate choice for off-road enthusiasts riding on private land or authorised trails.

Warning: with a 1000W motor and a maximum speed of 45 to 50 km/h, this bike is not road legal anywhere in Europe. Its use is restricted to private land and trails where regulations permit.

This bike is for you if:

✔ you want a powerful fat bike for off-road use
✔ you need a large 1200 Wh battery for long rides
✔ you require a very high maximum load capacity
✔ you only ride on private land or authorised trails

This bike is NOT for you if:

❌ you want a road legal electric bike
❌ you want a light manoeuvrable bike for the city
❌ you need dual suspension
❌ you prefer a brand with extensive European after sales service