Freesky Ranger Air M-540 4000W Peak Dual Motor Electric Fat-Tyre Bike | 48V 25Ah | Private Land Use

Discover the FREESKY Ranger Air M-540, a high-power dual-motor electric fat-tyre bike featuring a step-through 6061 aluminium frame, 48V 25Ah lithium battery, full suspension and 26 x 4-inch fat tyres. Designed for recreational riding on suitable private land, the Ranger Air combines adjustable electric performance with comfort-focused components.

The Ranger Air M-540 features front and rear brushless hub motors, each advertised with 2000W peak output. Together, the motors provide a manufacturer-advertised combined peak output of 4000W and maximum combined torque of 210Nm. Selectable rear-wheel and dual-motor operating modes allow riders to adjust motor engagement for different conditions.

The 48V 25Ah lithium battery provides approximately 1200Wh of nominal energy, calculated from the advertised voltage and capacity. The manufacturer advertises a range of 96–152km (60–95 miles) when operating with a single motor and 64–96km (40–60 miles) with dual motors. Actual range depends on rider weight, gradients, surface conditions, temperature, selected assistance level and battery condition.

The Ranger Air features a cadence sensor, five selectable pedal-assist levels and a thumb throttle. A colour LCD display provides battery, speed, mileage and operating information, while the manufacturer-advertised NFC system supports electronic locking and start-up functionality.

The full-suspension arrangement combines a 120mm oil-sprung front suspension fork with a 180mm coil rear shock specification. Together with 26 x 4-inch fat tyres, these components help absorb vibration on suitable uneven surfaces.

Front and rear four-piston hydraulic disc brakes with 180mm rotors provide controlled braking when properly maintained. Shimano 7-speed mechanical gearing and a KMC chain complete the drivetrain.

The upgraded 6061 aluminium step-through frame features a lowered frame entry, an adjustable heavy-duty aluminium kickstand and an alloy seat post. The manufacturer lists a maximum load of approximately 181kg (400lb), an approximate bicycle weight of 43kg (95lb) and a recommended rider height of 160–203cm.

Important UK Legal Notice: The advertised FREESKY Ranger Air M-540 high-power configuration is not established as a standard UK Electrically Assisted Pedal Cycle. Its 4000W combined peak output and thumb throttle must be assessed against the complete applicable legal requirements. A 25km/h restricted setting alone does not establish EAPC compliance. Unless separately authorised, use is restricted to suitable private land with the landowner's permission.

Key Features

• 4000W Advertised Combined Peak Output: Dual brushless hub motors with 2000W advertised peak output each.
• 210Nm Advertised Combined Torque: Up to 105Nm per motor.
• Selectable Motor Operation: Rear-wheel and dual-motor modes.
• 48V 25Ah Lithium Battery: Manufacturer-advertised battery with Battery Management System technology.
• 1200Wh Nominal Battery Energy: Calculated from the advertised battery voltage and capacity.
• Single-Motor Range: Manufacturer estimate of 96–152km (60–95 miles).
• Dual-Motor Range: Manufacturer estimate of 64–96km (40–60 miles).
• Five Pedal-Assist Levels: Selectable electrical support.
• Cadence Sensor: Detects pedalling activity.
• Thumb Throttle: Manufacturer-listed independent motor control.
• Step-Through Frame: Lowered frame entry for easier mounting and dismounting.
• 6061 Aluminium Frame: Upgraded aluminium construction.
• Full Suspension: Front fork and rear coil shock.
• 120mm Oil-Sprung Front Fork: Helps reduce impacts on uneven surfaces.
• 180mm Rear Coil Shock Specification: Manufacturer-listed rear suspension component.
• 26 x 4-Inch Fat Tyres: Wide-profile tyres for suitable outdoor surfaces.
• Four-Piston Hydraulic Disc Brakes: Front and rear braking systems with 180mm rotors.
• Shimano 7-Speed Rear Derailleur: Mechanical gear selection.
• KMC Chain: Manufacturer-listed drivetrain component.
• Colour LCD Display: Shows riding information and battery status.
• NFC System: Manufacturer-advertised electronic locking and start-up functionality.
• Steering Indicators: Manufacturer-advertised signalling feature.
• Adjustable Aluminium Kickstand: Heavy-duty support.
• 3A Smart Charger: Manufacturer lists UK and US standard charging cables.
• 181kg Maximum Load: Approximately 400lb manufacturer-listed capacity.
• Private Land Use: Standard UK EAPC compliance has not been established.

Technical Specifications

Why Choose This Product

• Dual-Motor Configuration: Front and rear motors with 4000W combined advertised peak output.
• Selectable Motor Modes: Switch between rear-wheel and dual-motor operation.
• Large Battery: 48V 25Ah lithium battery with approximately 1200Wh nominal capacity.
• Step-Through Frame: Lower frame entry for easier mounting and dismounting.
• Full Suspension: Oil-sprung front fork and rear coil shock for improved comfort on uneven surfaces.
• Wide Fat Tyres: 26 x 4-inch tyres for suitable recreational surfaces.
• Four-Piston Hydraulic Brakes: Front and rear braking with 180mm rotors.
• Shimano 7-Speed Gearing: Mechanical gear selection for varying gradients.
• Colour LCD with NFC: Riding information and manufacturer-advertised electronic locking functionality.
• 6061 Aluminium Frame: Manufacturer-listed maximum load of approximately 181kg.

FAQ

What motor configuration does the FREESKY Ranger Air M-540 use?
It features front and rear brushless hub motors, each with an advertised 2000W peak output, giving a combined advertised peak output of 4000W.

Is the Ranger Air M-540 UK EAPC compliant?
Compliance has not been established for the advertised high-power configuration. The manufacturer lists a 25km/h limited setting, but the maximum continuous rated motor output and complete vehicle configuration require verification.

Can the Ranger Air M-540 be used on UK public roads?
Public-use authorisation must not be assumed. A non-EAPC electric vehicle may require separate vehicle approval, registration, insurance, licensing and other applicable requirements.

Where can the high-power configuration be used?
Where public use is not legally authorised, operate only on suitable private land with the landowner's permission or other expressly permitted locations.

What is the advertised peak motor power?
4000W combined peak output from two 2000W peak motors.

What is the advertised motor torque?
Up to 105Nm per motor, with a manufacturer-advertised combined figure of 210Nm.

Can the rider select between single-motor and dual-motor operation?
Yes. FREESKY advertises rear-wheel and dual-motor drive modes.

What battery does the Ranger Air M-540 use?
A 48V 25Ah lithium battery.

What is the nominal battery energy?
Approximately 1200Wh, calculated from 48V multiplied by 25Ah.

What is the advertised single-motor range?
Approximately 96–152km (60–95 miles), depending on operating conditions.

What is the advertised dual-motor range?
Approximately 64–96km (40–60 miles), depending on operating conditions.

Is the advertised range guaranteed?
No. Actual range depends on rider weight, assistance level, gradients, temperature, surface conditions and battery condition.

How long does charging take?
The manufacturer advertises approximately eight hours. Confirm this against the supplied charger and battery.

What charger is specified?
A 3A smart charger with UK and US standard cables listed by the manufacturer.

How many pedal-assist levels are available?
Five selectable levels, plus level zero.

What type of pedal sensor is fitted?
A cadence sensor.

Does the bicycle have a throttle?
Yes. The manufacturer lists a thumb throttle.

Does the Ranger Air have full suspension?
Yes. It features a 120mm oil-sprung front suspension fork and a rear coil shock listed as 180mm.

What size are the tyres?
26 x 4 inches.

What brakes are fitted?
Front and rear four-piston hydraulic disc brakes with 180mm rotors.

How many gears does it have?
Shimano 7-speed gearing.

What material is the frame?
Upgraded 6061 aluminium.

Is the frame step-through?
Yes. The manufacturer advertises a lowered step-through frame design.

Does the display support NFC?
Yes. The manufacturer advertises NFC locking and start-up functionality.

Are steering indicators included?
FREESKY advertises a steering indicator system. Confirm the exact equipment supplied.

How much does the bicycle weigh?
Approximately 43kg (95lb), according to the detailed specifications.

What is the maximum load?
Approximately 181kg (400lb).

What rider height is recommended?
Approximately 160–203cm.

Does the battery have a safety certification?
FREESKY advertises UL 2271 battery certification. Supporting documentation should be obtained for the exact supplied model.

Off-Road Compliance Notice

High-Power Electric Bicycle - UK Legal Notice: The FREESKY Ranger Air M-540 is advertised with dual brushless motors providing a combined peak output of 4000W and a thumb throttle. Standard UK EAPC compliance has not been established for this configuration.

UK EAPC Requirements: A qualifying UK EAPC must have functioning pedals, a maximum continuous rated motor output not exceeding 250W, electric assistance that cuts off at 25km/h (15.5mph), and compliance with all other applicable requirements.

Motor Rating: The advertised 4000W figure is combined peak output, not a verified continuous motor rating. Maximum continuous rated power must be established using documentation for the complete supplied motor configuration.

Speed-Limited Setting: The manufacturer advertises assistance limited to 25km/h. This setting alone does not establish UK EAPC compliance.

Throttle Operation: The advertised thumb throttle must be assessed against applicable UK requirements. Its presence and operating characteristics may affect vehicle classification.

Public-Use Restrictions: Unless the bicycle qualifies as an EAPC or has the necessary separate legal authorisation, it must not be assumed to be permitted on UK public roads, cycle paths, bridleways or other publicly accessible areas.

Private Land Use: Where public use is not legally authorised, operation should be restricted to suitable private land with the landowner's permission or other expressly permitted locations.

Modifications: Changes to motor controls, throttle behaviour, assistance limits or electrical components may affect legal classification, safety and warranty coverage.

Safety Information: Follow the manufacturer's instructions, wear suitable protective equipment and inspect the brakes, tyres, suspension, battery and electrical components before use. Operate only on suitable surfaces and within the manufacturer's load limit.