FREESKY Alaska Pro M-520 Electric Bike – 48V 45Ah
FREESKY Alaska Pro M-520 Electric Bike – 48V 45Ah: Features and Specifications
The FREESKY Alaska Pro M-520 is a high-power fat-tyre electric bike for demanding off-road and private-land use. Its brushless rear hub motor delivers up to 4000W peak output and 160Nm torque.
The 48V 45Ah dual-battery system provides 2160Wh capacity, while 26 × 4.0-inch fat tyres, front and rear suspension, Shimano 7-speed gearing and 180mm four-piston hydraulic brakes support stable, controlled riding.
Electric Scooters London provides UK-based product guidance and workshop support from Twickenham, West London. Review the specifications, use notice and manufacturer instructions before ordering or riding.
Power System and Battery
Peak motor power: 4000W brushless rear hub motor, Torque: 160Nm and Dual battery: 48V 45Ah total, 2160Wh.
These are manufacturer-listed figures for the supplied system. Follow the product manual and use only compatible charging equipment and replacement parts.
Speed, Range and Performance
Estimated range: 158–282 km.
Manufacturer-listed performance figures are summarised here; verify the relevant operating conditions in the technical specifications and product manual.
Ride, Braking and Control
Brakes: 180mm four-piston hydraulic brakes.
Check tyres, brakes, fasteners and controls before every ride, and keep all safety-critical components correctly adjusted and maintained.
Design and Practical Details
Ride setup: 26 × 4.0-inch tyres and dual suspension.
Confirm the product’s weight, dimensions, storage requirements and lifting needs are suitable before ordering.
FREESKY Alaska Pro M-520 Electric Bike – 48V 45Ah Technical Specifications
| Model | FREESKY Alaska Pro M-520 |
|---|---|
| Product type | Fat-tyre electric bike |
| Motor | Brushless rear hub motor |
| Peak motor power | 4000W |
| Torque | 160Nm |
| Controller | 48V / 30A |
| Sensor | Speed sensor |
| Pedal assist | Levels 0–5 |
| Throttle | Thumb throttle |
| Battery | 48V 45Ah dual lithium battery system |
| Battery configuration | 18Ah upper battery + 27Ah lower battery |
| Battery capacity | 2160Wh |
| Estimated range | Approximately 158–282 km |
| Charging time | Approximately 6–8 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 | Lockable, adjustable hydraulic downhill fork |
| Brakes | Front and rear 180mm four-piston hydraulic brakes |
| Frame | Upgraded 6061 aluminium |
| Display | LCD colour display |
| Lighting | Front headlight |
| Kickstand | Adjustable heavy-duty aluminium kickstand |
| Seatpost | 30.9 × 350mm alloy |
| Bike weight | 40.8 kg |
| Maximum load | 136 kg |
| Total length | 194.3 cm |
| Wheelbase | 120.4 cm |
| Total height | 111.8 cm |
| Seat height | 80–103.4 cm |
| Seat tube angle | 73° |
| Reach | 45.7 cm |
| Standover height | 51.8 cm |
| Wheel diameter | 67.8 cm |
| Recommended rider height | 168–203 cm |
| Certification | UL2849 certified; battery tested to UL 2271 |
| Colour options | Black, blue and green |
| In the box | Electric bike, battery, charger, power cable, user manual, mudguards and rear rack |
Frequently Asked Questions
What motor is fitted to the Alaska Pro M-520?
It uses a brushless rear hub motor with up to 4000W peak output and 160Nm torque.
How is the dual battery configured?
The listed system combines an 18Ah upper battery and 27Ah lower battery for 48V 45Ah and 2160Wh total capacity.
What range is listed?
The manufacturer estimate is approximately 158–282 km. Actual range varies with load, assistance, terrain, temperature and riding style.
How long does charging take?
The listed charging time is approximately 6–8 hours with the supplied 3A smart charger.
What rider height does it suit?
The listed recommended rider-height range is 168–203 cm.
Why Buy From Electric Scooters London?
Specialist product support: Practical guidance from an established UK electric bike retailer.
West London workshop: Diagnostics, servicing and repair support from our Twickenham location.
Clear ownership information: Straightforward specifications, setup guidance and prominent UK use notices.
Long-term after-sales help: Professional assessment and suitable replacement parts where available.
Explore our electric bike range or learn about our repairs and servicing.
Before ordering: Review our delivery information, returns & refunds, and warranty & support.
FREESKY Alaska Pro M-520 Electric Bike – 48V 45Ah Product Images
