Onesport W66 – Full-Suspension Electric Fat Bike 500W

🏍️ Onesport W66 electric fat bike – a retro-style beast that made a big splash in Helsinki

The story began when the Onesport factory packed its latest creation— the Onesport W66 electric fat bike —into a box and shipped it to the joint test-ride center for European electric bike manufacturers in Kruunuvuorenranta, Helsinki.

The test team opened the package, looked at the bike, and someone said quietly:

“This isn’t an electric bike. It’s a moped disguised as a moped.”

And that was certainly true. The Onesport W66 electric fat bike didn't back down—it made it clear right from the start that this game would be played by its own rules.

🔥 First driving experience – when a smile stays on your face

Once the Onesport W66 electric fat bike was started up and we set off along the beach boulevard, it was no longer a test ride. It was a show. The 500-watt motor and 65-newton-meter of torque propelled the bike forward so smoothly that it felt like we were gliding.

The wide 20×4-inch fat tires gripped the asphalt and gravel like a hook on a salmon. The full suspension absorbed rocks and tree roots without a hint of resistance. The test team was silent—not because they had nothing to say, but because they were focused on savoring every second.

💡 Why choose the Onesport W66 electric fat bike?

The Onesport W66 electric fat bike is an electric bike for those who aren't just looking for a bike—but for attitude, power, and style.

It looks like an old moped, but it goes like a rocket.
It can carry two people—or you and all your weekend gear.
It turns everyday life into an adventure and an adventure into everyday life.

And best of all—it does it in spectacular fashion.

🛠️ Technical Specifications for the Onesport W66 Electric Fatbike

All information has been verified with the manufacturer:

Motor: 500W brushless rear motor, 48V, torque 65 Nm
Battery: 48V / 13.5Ah (648Wh), removable, charging time 6–8 hours, range up to 80–100 km with assistance
Tires: 20″ x 4″ fat tires – perfect for asphalt, sand, and mud
Suspension: Full suspension – front suspension fork and rear shock absorber
Brakes: Hydraulic disc brakes front and rear
Gear system: Shimano 7-speed
Display: LCD instrument cluster with Bluetooth connectivity and smartphone app support
Lights: LED headlight and taillight, IPX4 weather-resistant
Maximum load: 180 kg
Weight: about 39 kg

🌍 Where does the Onesport W66 electric fat bike feel right at home?

🚵‍♂️ Off-road:

Gravel roads, ruts, and forest trails are no problem for this vehicle. Wide tires and full suspension make for a smooth ride, even on rocky terrain.

🏙️ In the city:

The cobblestones on Kruunuvuorenranta felt as soft as a sandy road. The bike glides through traffic with confidence, stability, and style.

⛰️ Uphill:

With 65 Nm of torque, the Onesport W66 electric fat bike powers up even the steepest climbs like an electric-powered mountain goat. I didn't even have to get out of the saddle.

👤 Who is the Onesport W66 electric fat bike best suited for?

For those of you who want to combine retro style with modern performance
For the adventurer who rides on dirt roads, through the woods, and through the city on a single bike
For families or anyone who needs to transport things—this bike offers plenty of load capacity and space
For everyone who doesn't want to blend in with the crowd but rise above it

We also want to share useful information about the world of e-bikes. If you’d like to learn more about e-bikes, their benefits, and how they can be used, I recommend checking out the following resources:

Network of Cycling Communities– Up-to-date information on cycling in Finland.
Traffic Safety– Tips for Safe Electric Biking.
Fillari Magazine– Articles and reviews on cycling and e-bikes.
Motiva– Information on sustainable transportation solutions.

I hope you find some useful information in these links!

Best regards,
The SähköpyöräTehdas Team

Motor: 500W, 65 Nm of torque, 30° climbing ability
Battery: 48V 13.5Ah, up to 80 km range in assisted mode
Tires: 20" x 4.0" wide fat tires, excellent traction and stability
Suspension: Full suspension (front fork + 30 mm rear shock)
Gear system: 7-speed Shimano
Brakes: Hydraulic disc brakes front and rear
Display: Multifunction display, Bluetooth connectivity, smartphone app support
Lights: Built-in front and rear lights
Weight: Net weight 39 kg, maximum load 180 kg

Electric Bike Factory Warranty – We're Here to Support You

All electric bicycles come with a manufacturer's warranty that covers the most important parts as follows:

Frame: 10-year warranty against manufacturing defects.
Electric motor and its components: 2 years.
Battery: 2 years.
Other electrical components: 2 years.

The expert staff at Sähköpyörätehdas will support you throughout the entire warranty process, so you
don't have to worry. We'll handle everything for you directly with the manufacturer.

How we handle warranty issues on your behalf:

1. If a problem arises – Contact us at
If your electric bike develops a fault, contact Sähköpyörätehdas customer service immediately. You can
contact us by email, phone, or by filling out the warranty form on our website.
We ask that you describe the problem in detail and send any photos or
videos of the issue, along with your purchase information. This will allow us to assess the problem as quickly as possible.

2. Problem Assessment and Inspection
When you contact us, our expert will assess the situation and determine whether the problem is covered by the warranty
. If necessary, we’ll direct you to the nearest service center or arrange for your bike to be picked up
for a more detailed assessment. We’ll take care of everything for you—all you need to do is report
the problem and send your bike in for inspection.

3. Warranty Processing – We’ll handle communication with the manufacturer
Once we’ve confirmed that the defect is covered by the warranty, the Sähköpyörätehdas staff will handle
all communication with the manufacturer on your behalf. This includes submitting the necessary documents and information
as well as ordering any replacement parts. A warranty repair may involve replacing a part,
repairing the bike, or even delivering a new bike if the defect cannot be repaired.

4. Fast and Efficient Service
We ensure that the problem is fixed as quickly and professionally as possible. We’ll handle
all service-related arrangements for you, so you don’t have to worry about the details.
We’ll keep you updated throughout the process and notify you as soon as the service or repair is complete.

5. After a warranty repair – We’ll arrange for the return at
Once the problem has been fixed or the defective part has been replaced, we’ll notify you and arrange for the return or pickup of your bike at
We’ll make sure everything is in order before we return the bike to you at
.

6. Costs Covered by the Warranty
If the defect is covered by the warranty, repairs, part replacements, and return shipping are completely free of charge for you.
If the defect is not covered by the warranty, we will offer you a paid repair service and provide
a cost estimate before starting the work.

Sähköpyörätehdas Supporting You Every Step of the Way

We are committed to ensuring that your electric bike works flawlessly throughout the warranty period.

We'll handle all warranty matters with the manufacturer on your behalf, so you can focus on carefree
driving.

Sähköpyörätehdas's customer service is always ready to help you—just contact us at
and we'll take care of everything for you.

Maintenance and Assembly of Electric Bikes at the Electric Bike Factory

You can have your electric bike serviced either at our store in Helsinki or at service centers located elsewhere in Finland. You can easily find your nearest service location [here].

Assembling an Electric Bike

When you buy an e-bike from us, you can rest assured that we’ve made everything as easy as possible for you. Our e-bikes come 90% pre-assembled, which means you don’t have to worry about complicated assembly steps. For the final assembly, you’ll receive all the necessary tools and clear, step-by-step instructions to ensure your e-bike is ready to ride in just about 30 minutes.

However, if you need help at any stage, we’re here to assist you. You can contact us at any time, and we offer free video guidance via WhatsApp to ensure the assembly goes smoothly. If you’d still rather not assemble the e-bike yourself, you can also bring it to our store, and we’ll assemble it for you—this service is also designed to keep the process easy and hassle-free.

First Aid

The first service should be performed after about one month of riding or when the e-bike has been ridden 100–300 kilometers. This initial service includes a thorough wash of the e-bike, a comprehensive inspection of the electrical components, adjustments to the brakes and gears, tightening of the spokes, lubrication of the chains, and a general condition check. This service ensures that your e-bike is in top condition and ready for safe riding.

Annual Maintenance

Annual maintenance includes even more comprehensive procedures: battery testing, drivetrain cleaning, tire inflation and replacement, chain lubrication, and inspections and updates of all electrical systems. We recommend annual maintenance regardless of how often you use your e-bike, to ensure it remains in top technical condition and safe to ride all year round.

Prices for Maintenance and Repair Services

We keep our maintenance costs competitive. The price for an initial service starts at 90 EUR, and a comprehensive annual service costs 149 EUR (including 25.5% VAT).

If you'd like us to assemble your electric bike for you, you can bring it to our store; the assembly service costs 69 EUR.

Service and Assembly Appointment

You can schedule a service appointment or a pickup by calling our store directly or visiting our website.

If you can't make it to our store in Helsinki, you can take advantage of our service network, which covers all of Finland. [Click here] to see all of our service locations and their contact information.