The FREESKY Ranger Air M-540 is a high-power step-through fat-tyre electric bike for demanding off-road riding. Front and rear brushless hub motors provide up to 3500W combined peak output and 200Nm combined torque.
Its 48V 25Ah battery, 26 × 4.0-inch fat tyres, front and rear suspension, Shimano 7-speed gearing, thumb throttle and 180mm four-piston hydraulic brakes support strong traction and controlled handling.
FREESKY Ranger Air M-540 Dual-Motor Electric Bike Technical Specifications
| Model | FREESKY Ranger Air M-540 |
|---|---|
| Product type | Step-through dual-motor fat-tyre electric bike |
| Motor | Front and rear brushless hub motors |
| Peak motor power | 3500W combined (1750W front + 1750W rear) |
| Torque | 200Nm combined (100Nm front + 100Nm rear) |
| Drive modes | Rear-wheel drive and dual-motor drive |
| Sensor | Speed sensor |
| Pedal assist | Levels 0–5 |
| Throttle | Thumb throttle |
| Battery | 48V 25Ah lithium battery |
| Estimated range | 96–152 km in single-motor mode; 64–96 km in dual-motor mode |
| Maximum speed | Up to 34 mph in full-power operation; 15.5 mph / 25 km/h in speed-limited mode |
| Charging time | Approximately 8 hours |
| Charger | 3A smart charger |
| Transmission | Shimano 7-speed |
| Chain | KMC chain |
| Tyres | 26 × 4.0-inch fat tyres |
| Suspension | Front and rear suspension |
| Front fork | Downhill full-suspension fork |
| Brakes | Front and rear 180mm four-piston hydraulic brakes |
| Frame | Upgraded 6061 aluminium step-through frame |
| Display | LCD colour display with NFC lock/start |
| Lighting | Front light |
| Kickstand | Adjustable heavy-duty aluminium kickstand |
| Seatpost | 30.9 × 300mm alloy |
| Bike weight | Approximately 43 kg |
| Maximum load | 181 kg / 400 lb |
| Total length | 198.1 cm |
| Wheelbase | 127 cm |
| Total height | 116.8 cm |
| Seat height | 88.9–104.1 cm |
| Reach | 55.9 cm |
| Wheel diameter | 73.7 cm |
| Step-through height | 45.7 cm |
| Recommended rider height | 162.6–203.2 cm |
| Inseam range | 68.6–88.9 cm |
| Certification | UL2849 certified; battery tested to UL 2271 |
| Colour options | Black, blue, green, red and camouflage |
| In the box | Electric bike, battery, charger, power cable, pedals, multi-tool, user manual, mudguards and rear rack |
Frequently Asked Questions
The two hub motors are listed at 1750W peak each, giving 3500W combined peak output and 200Nm combined torque.
The listed drive modes are rear-wheel drive and dual-motor drive.
The estimated figures are 96–152 km in single-motor mode and 64–96 km in dual-motor mode. Actual range varies with conditions and use.
The listed charging time is approximately 8 hours with the supplied 3A smart charger.
The source lists a recommended rider height of 162.6–203.2 cm and an inseam range of 68.6–88.9 cm.
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