Accessory Kit

Recommendations

Contact Warranty Policy

Home > All > Alaska Pro M-520

Peak Power

4OOOW

Battery Capacity

48V 45AH

Range

158–282 KM

Torque

160 N·m

Shimano

7-Speed

Ebike Safety

UL2849 Certified

Alaska Pro M-520

Dual Batteries, Engineered for Long-Range Rides

£1,509.00 £2,299.00

Extra £30 OFF with code FREESKY

Expected shipping date: May 29, 2026

Pay over time with 0% interest

Color - Black

Quantity

Find Your Recommended Size

£30 OFF

Subscribe & get an extra £30 off — use code FREESKY at checkout. Become a member >

Pay With Ease Learn More

Order Support

Alaska Pro M-520

Size & Fit

FRAME SIZE

REFERENCE DATA

Total Length

194.3 cm（76.5"）

Wheelbase

120.4 cm（47.4"）

Total Height

111.8 cm（44"）

Seat Tube Angle

73°

Seat Height Max

103.4 cm（40.7"）

Seat Height Min

80 cm（30.7"）

Reach

45.7 cm（18"）

Wheel Diameter

67.8 cm（26.7"）

Standover Height

51.8 cm（20.4"）

Rider Height

167.6–203.2 cm（5'6"~6'8"）

Inseam Range

68.6–88.9 cm（27"–35"）

Perfect Choice For Adventures

Why Alaska

Step into the wild with the Alaska M-520, engineered for peak performance and unmatched versatility. Featuring dual batteries, a 4OOOW peak motor, and a dual suspension system, it delivers long-lasting power and superior handling—perfect for off-road adventures and extended journeys.

View Full Video

Go Anywhere with Alaska

The Alaska M-520 is engineered to tackle diverse terrains with ease. Whether you're cruising through the city, navigating rugged trails, or enjoying sandy beaches, this e-bike offers unbeatable performance. With dual batteries and a powerful motor, it delivers strength, endurance, and versatility for any adventure, making it perfect for riders who demand more from their e-bike.

Gravel Roads

Sandy Paths

Urban Sidewalks

Gravel Roads

Sandy Paths

Urban Sidewalks

The Upgrade Dual Battery 48V 45Ah

Go the Distance with Dual Energy

With dual removable batteries—18Ah on top and 27Ah below—the Alaska M-520 allows you to travel an impressive 98–175 miles (158–282 km) on a single 6–8 hour charge. It’s perfect for long-distance commuters and outdoor enthusiasts who need reliable power for extended rides.

4OOOW High-Performance Peak Motor

Ride Fast, Ride Fearless

The 4OOOW High-Performance Peak Motor with a high-speed rear hub delivers an impressive 160 N·m of climbing power. Whether you're carving through snow, gliding over sandy beaches, or tackling rugged mountain trails, the Alaska M-520 offers a thrilling, adventure-ready ride that’s as versatile as you are.

Dual Suspension & Hydraulic Disc Brake

Smooth Rides and Safe Stops

Experience ultimate comfort and safety with the Alaska M-520’s lockable, adjustable front suspension hydraulic downhill fork and rear suspension. Dual hydraulic disc brakes on both the front and rear ensure safe, confident stopping, no matter the terrain or conditions.

More Features

Motor

Delivers powerful performance with a 4OOOW Peak Motor and 160 N·m of torque, making any terrain conquerable.

Smart LCD Display

Displays key ride information at a glance, including 5 PAS levels, headlight status, speed, battery life, and mileage for total control.

UL2271 Certified Battery

FREESKY batteries are rigorously tested to meet the UL 2271 safety standard, offering exceptional protection against both electrical and structural risks. The 45Ah dual battery system delivers an impressive range of 158-282 KM (98-175 Miles) in pedal assist mode, enabling you to travel longer distances with complete confidence.

Thumb Throttle

Ergonomically positioned for effortless use—simply press to unleash instant power and speed at your fingertips.

Rear Derailleur

Provides smooth, precise gear shifts for optimal performance, whether you're on flat roads or rugged trails.

Rear Suspension

Effectively absorbs shocks from bumpy roads, ensuring a stable and comfortable ride for longer journeys.

Front Suspension Fork

Minimizes vibration impact on your arms, offering enhanced control and direction even on rough terrains.

4-piston Hydraulic Brakes

Engineered for superior safety and performance, these brakes ensure reliable stopping power, allowing you to ride confidently in any condition.

Rider Review

Technical Specification

Download User Manual

Performance

RANGE

158–282 KM (98–175 Miles)

LOAD CAPACITY

136 KG, 400 LBS

PEDAL ASSIST

0~5 level pedal assist

REAR DERAILLEUR

SHIMANO 7-Speed

RANGE

158–282 KM (98–175 Miles)

LOAD CAPACITY

136 KG, 400 LBS

PEDAL ASSIST

0~5 level pedal assist

REAR DERAILLEUR

SHIMANO 7-Speed

Power System

MOTOR

4OOOW Brushless Peak Motor

CHARGER

3A Smart Charger (with US Standard & UK Standard Cable)

CONTROLLER

48V/30A

BATTERY

48V 45Ah Cell Lithium Battery（18+27Ah）

THROTTLE

Thumb Throttle

SENSOR

Speed Sensor

MOTOR

4OOOW Brushless Peak Motor

CHARGER

3A Smart Charger (with US Standard & UK Standard Cable)

CONTROLLER

48V/30A

BATTERY

48V 45Ah Cell Lithium Battery（18+27Ah）

THROTTLE

Thumb Throttle

SENSOR

Speed Sensor

Frameset

TIRES

26" x 4" Fat Tires

DISPLAY

LCD Color Display

BRAKES

180MM Hydraulic

CHAIN

KMC

FRONT FORK

Downhill Full Suspension

FRAME

Upgraded 6061 Aluminum

KICKSTAND

Adjustable Heavy Duty Aluminum

SEAT POST

30.9*350MM Alloy Seat Post

E-BIKE WEIGHT

40.8 KG (90 lbs)

TIRES

26" x 4" Fat Tires

DISPLAY

LCD Color Display

BRAKES

180MM Hydraulic

CHAIN

KMC

FRONT FORK

Downhill Full Suspension

FRAME

Upgraded 6061 Aluminum

KICKSTAND

Adjustable Heavy Duty Aluminum

SEAT POST

30.9*350MM Alloy Seat Post

E-BIKE WEIGHT

40.8 KG (90 lbs)

What You’ll Receive

Alaska Pro Electric Bike

E-bike Manual Guide

Rear Rack

Front & Rear Mudguards

Alaska Pro Electric Bike

E-bike Manual Guide

Rear Rack

Front & Rear Mudguards

Geometry

FRAME SIZE

REFERENCE DATA

Total Length

194.3 cm（76.5"）

Wheelbase

120.4 cm（47.4"）

Total Height

111.8 cm（44"）

Seat Tube Angle

73°

Seat Height Max

103.4 cm（40.7"）

Seat Height Min

80 cm（30.7"）

Reach

45.7 cm（18"）

Wheel Diameter

67.8 cm（26.7"）

Standover Height

51.8 cm（20.4"）

Rider Height

167.6–203.2 cm（5'6"~6'8"）

Inseam Range

68.6–88.9 cm（27"–35"）

FRAME SIZE

REFERENCE DATA

Total Length

194.3 cm（76.5"）

Wheelbase

120.4 cm（47.4"）

Total Height

111.8 cm（44"）

Seat Tube Angle

73°

Seat Height Max

103.4 cm（40.7"）

Seat Height Min

80 cm（30.7"）

Reach

45.7 cm（18"）

Wheel Diameter

67.8 cm（26.7"）

Standover Height

51.8 cm（20.4"）

Rider Height

167.6–203.2 cm（5'6"~6'8"）

Inseam Range

68.6–88.9 cm（27"–35"）

FAQ

Our e-bike is UL2849 Certified.

It also includes a speed-limit mode specifically designed for UK compliance.
In this mode, the motor output is ≤250W, and assistance cuts off at 15.5 mph (25 km/h), which meets the core requirements for EAPC use on UK public roads.

To learn how UK customers actually ride in compliance mode — and why many of our existing riders trust this setup for their daily commutes — you can read our detailed blog here: UK Road-Legal Riding

We accept the following payment methods:

-Debit or credit cards (Visa, MasterCard, AMEX, and UnionPay)
-Klarna
-PayPal
-Freesky eBikes gift cards

Klarna is available in the United Kingdom.

Klarna is fast, convenient, and allows you to choose your payment method. You can enjoy installments ranging from 4 to 24 months. There are two ways to pay the order for interest-free.

1.Pay in 4: Pay 25% Now, and Pay Later Every 2 Weeks ( For example, a ￡1,000 purchase would need you to pay ￡250 now, and ￡250 every two weeks at interest FREE! )

2.Plan Pay in 30 Days: Shop Now and Pay in 30 Days.
But please note that Klarna has the final say on whether you qualify for interest-free equal installments.

-About Klarna: https://www.klarna.com/uk/about-us/
-Klarna Customer Service: https://www.klarna.com/uk/customer-service/
-Klarna Privacy Policy: https://www.klarna.com/uk/privacy/

Please note that Klarna has the final say on whether you qualify for interest-free equal installments.

1. Shipping Areas
-We offer shipping across most of the United Kingdom. However, due to logistical constraints, we are unable to deliver to Northern Ireland, the Isle of Man, the Isle of Wight, and other offshore locations.
-We DO NOT ship to PO BOXES or APO addresses.
-Delivery is available to areas where FedEx can provide service; however, certain remote addresses may be subject to additional remote area surcharges.

2. Unable to Check Out Even Though Your Address is Within the Shipping Area?
-If you are experiencing checkout issues despite your address being eligible for delivery, please check whether there is an out-of-stock accessory in your cart.
-If so, kindly remove the unavailable item(s) and attempt to complete the checkout again.

-For in-stock ebikes, we'll provide tracking number within 2 business days. A shipping confirmation email will be sent to your email once the order has been shipped. Orders will take 3-7 days to deliver.

-For accessories, may ship separately from China, and typically take 7-14 days. You will be notified by email with tracking details.

Any delivery dates provided by Freesky are estimates.

We offer free shipping to the following regions:

1.We offer shipping across most of the United Kingdom. However, due to logistical constraints, we are unable to deliver to Northern Ireland, the Isle of Man, the Isle of Wight, and other offshore islands.

2.We DO NOT ship to PO BOXES or APO addresses.

3.Delivery is available to areas supported by FedEx. However, certain remote addresses may be subject to additional remote area surcharges.

Simply fill out the warranty registration form on our website. Once submitted, your eBike will be registered and covered under the warranty.

Each Freesky eBike comes with a manufacturer's warranty covering defects for the original owner:

24-month warranty for the motor, battery, and controller
12-month warranty for other parts

Doubts Before Purchase?

Hear real experiences from 4K+ riders in our community.

Freeskycycle eBike Owner Group

Private group

4K+ members

Join Our Community

Show All Show Difference
Product Title	Alaska Pro M-520	Eurostar Ultra M-410	Nova B-360	Ranger Air M-540	Rocky Pro A-320	Swift Horse Ultra X-6E	Warrior Pro M-530
Price	£1,509.00 ~~£2,299.00~~ ( 34.36% Off )	£1,129.00	£1,499.00 ~~£1,599.00~~ ( 6.25% Off )	£1,129.00	£1,229.00	£1,309.00	£1,529.00 ~~£2,299.00~~ ( 33.49% Off )
Color	Black/Blue/Green	Black/Gray/Green	Red/Blue/Green	Black/Blue/Green/Red	Black/Blue/Green/Red	Black/Blue/Green	Black/Blue/Green
Frame Style	EMTB	EMTB	Step-Thru	Step-Thru	Step-Thru	EMTB	EMTB
Mode	Pedal Assist	Pedal Assist	Pedal Assist	Pedal Assist	Pedal Assist	Pedal Assist	Pedal Assist
Power	Peak 4OOOW	3OOOW Peak	Peak 1OOOW	Peak 35OOW	Peak 25OOW	35OOW Peak	Peak 4OOOW
Battery Capacity	48V 41Ah(18Ah+23Ah) Cell Lithium Battery	48V 25Ah Lithium Battery	48V 30Ah(15Ah+15Ah) SAMSUNG Cell Lithium Battery	48V 25Ah Lithium Battery	48V 25Ah SAMSUNG Cell Lithium Battery	48V 35Ah SAMSUNG Cell Lithium Battery	48V 30Ah SAMSUNG Cell Lithium Battery
Charging Time	6-8 hours	5-7 hours	6-8 hours	6-8 hours	4-6 hours	4-6 hours	8-10 hours
Assist Speed	25 KM/H, 15.5 MPH (Limited)	25 KM/H, 15.5 MPH (Limited)	25 KM/H, 15.5 MPH (Limited)	25 KM/H, 15.5 MPH (Limited)	25 KM/H, 15.5 MPH (Limited)	25 KM/H, 15.5 MPH (Limited)	25 KM/H, 15.5 MPH (Limited)
Range	158–282 KM (98–175 Miles)	80–153 KM (50–95 Miles)	120-193 KM (75-120 Miles)	96-152 KM (60-95 Miles)	72–144 KM (45–90 Miles)	140–225 KM (87-140 Miles)	96–193 KM (60–120 Miles)
Rider Height	167.6 CM (5'6") ~ 203.2 CM (6'8")	160.0 CM (5'3") ~ 195.6 CM (6'5")	162.6 CM (5'4") ~ 203.2 CM (6'8")	162.6 CM (5'4”) ~ 203.2 CM (6'8”)	154.9 CM (5'1") ~ 180.3 CM (5'11")	160.0 CM (5'3") ~ 195.6 CM (6'5")	165.1 CM (5'5") ~ 190.5 CM (6'3")
Rear Derailleur	SHIMANO 7-Speed	SHIMANO 7 Speed	SHIMANO 7-Speed	SHIMANO 7-Speed	SHIMANO 7-Speed	SHIMANO 7 Speed	SHIMANO 7-Speed
Front Fork	Downhill Double Shoulder Suspension	Suspension Fork 120 MM Travel	Downhill Suspension	Downhill Full Suspension	Downhill Full Suspension	Downhill Double Shoulder Suspension Fork 120 MM Travel	Downhill Double Shoulder Suspension Fork 120 MM Travel
Motor	4OOOW Brushless Peak Motor	3OOOW Peak Brushless Motor	BAFANG 1OOOW Peak Motor	175OW + 175OW Brushless Peak Motors	18OOW Brushless Peak Motor	35OOW Peak BAFANG Brushless Motor	2OOOW + 2OOOW Brushless Peak Motors
Sensor	Speed Sensor	Speed Sensor	Torque Sensor	Speed Sensor	Torque Sensor	Speed Sensor	Speed Sensor
Charger	3A Smart Charger (with US Standard & UK Standard Cable)	3A Smart Charger	2A Smart Charger (with US Standard & UK Standard Cable)	3A Smart Charger (with US Standard & UK Standard Cable)	US Standard 3A Smart Charger (with US Standard & UK Standard Cable)	3A Smart Charger (with US Standard & UK Standard Cable)	3A Smart Charger (with US Standard & UK Standard Cable)
Controller	48V/30A	48V/30A	48V/30A		48V/22A	48V/30A	48V/22A+22A
Torque	160 N·M	130 N·M	55 N·M	100 N·M*2	120 N·M	140 N·M	120 N·M*2
Suspension	Front and Rear Dual Suspension	Front and Rear Suspension	Front Suspension	Front and Rear Suspension	Front and Rear Dual Suspension	Front and Rear Suspension	Front and Rear Dual Suspension
Display	LCD Color Display	LCD Color Display	LCD Color Display	LCD Color Display	LCD Color Display	LCD Color Display	LCD Color Display
Brakes	180MM 4-piston Hydraulic Brakes	180MM 4-piston Hydraulic Brakes	180MM 4-piston Hydraulic Brakes	180MM 4-piston Hydraulic Brakes	180MM 4-piston Hydraulic Brakes	180MM 4-piston Hydraulic Brakes	180MM 4-piston Hydraulic Brakes
Tires	26.0" x 4.0" Fat tires	26.0" x 4.0" Fat tires	27.5" x 2.2"	26.0" x 4.0" Fat tires	20.0" x 4.0" Fat tires	26.0" x 4.0" Fat tires	26.0" x 4.0" Fat tires
Seat Post	30.9*350MM Alloy Seatpost	30.9*300MM Alloy Seatpost	30.9*220MM Alloy Seatpost	30.9*300MM Alloy Seatpost	30.9*300MM Alloy Seatpost	30.9*300MM Alloy Seatpost	30.9*220MM Alloy Seatpost
Bike Weight	40.8 KG (90 lbs)	34.9 KG (77 lbs)	34.9KG (77 lbs)	43 KG (95 lbs)	35 KG (77 lbs)	37.6 KG (83 lbs)	44 KG (97 lbs)
	View Product	View Product	View Product	View Product	View Product	View Product	View Product

Swift Horse Ultra X-6E

(Pre-order) Warrior Pro M-530

Alaska Pro M-520

(Pre-order) Ranger Air M-540

(Pre-order) Rocky Pro A-320

Nova B-360

Wild Cat Ultra A-340

Accessory Kit

Recommendations

Peak Power

Battery Capacity

Range

Torque

Shimano

Ebike Safety

Alaska Pro M-520

Alaska Pro M-520

Size & Fit

FRAME SIZE

REFERENCE DATA

Why Alaska

Go Anywhere with Alaska

The Upgrade Dual Battery 48V 45Ah

Go the Distance with Dual Energy

4OOOW High-Performance Peak Motor

Ride Fast, Ride Fearless

Dual Suspension & Hydraulic Disc Brake

Smooth Rides and Safe Stops

More Features

Rider Review

Technical Specification

Performance

Performance

Power System

Power System

Frameset

Frameset

What You’ll Receive

What You’ll Receive

Geometry

Data

FRAME SIZE

REFERENCE DATA

FRAME SIZE

REFERENCE DATA

Alsaka M-520

FAQ

What certifications does it have? Is it compliant with UK regulations?

What payment methods does Freesky accept?

Why can’t I use Klarna?

Why can’t I use my shipping address at checkout?

What are the shipping times?

Where do you ship to?

How do I register my eBike warranty?

You May Also Like

Doubts Before Purchase?

Freeskycycle eBike Owner Group

Product Compare