Onesport W77 Electric Fat Bike – Up to 80% cheaper from us!

Onesport W77 – An electric fat bike that took Kruunuvuorenranta by storm

The morning at Kruunuvuorenranta began like a scene from a movie. The sea was as smooth as glass, the sky painted in shades of pink and orange, and our electric bike test team stood ready around the newcomer— the Onesport W77 electric fat bike. This wasn’t just any electric bike. It was an all-steel powerhouse with 65 Nm of torque, delivered straight from the factory to the joint test track of European electric bike manufacturers.

Our mission: to test it for six hours under every condition that Helsinki’s Kruunuvuorenranta has to offer. Asphalt, gravel, sandy beaches, forest trails, long uphill climbs, and the pulse of the city—all in a single day.

The First Few Meters – Love Begins Right Away

9:00 a.m. The sun rose, and the first rider hopped on the bike. The Onesport W77 electric bike took off smoothly, but after just a few pedal strokes, I could feel the motor’s power throughout my whole body. The 20×4.0” Kenda tires provided perfect traction on both smooth asphalt and loose gravel. The suspension absorbed every bump, and the ride felt so smooth it was like gliding.

The Hills of Kruunuvuorenranta – Strength Is the Deciding Factor

11:30 a.m. We decided to put the bike to the test on the city’s steepest climbs. Most e-bikes slow down and require the rider to assist. The Onesport W77 electric fat bike, however, powered up the hills almost effortlessly. 65 Nm of torque combined with 500 W of peak power made every climb a pleasure. The test rider remarked over the radio: “This is the first e-bike where the hills feel like downhills.”

City Center – Agility and Control

2:00 p.m. We took the bike onto the cobblestones and into the midst of the busy tram tracks. The hydraulic dual-piston disc brakes brought it to a controlled and safe stop. The bike’s agility was surprising—the all-steel frame provided stability, yet the W77 responded lightly to steering inputs. This e-bike was just as at home on downtown streets as it was on nature trails.

The Final Rounds – A Perfect Performance

4:00 p.m. Six hours of intense riding behind us. The battery was still going strong, the tires held their grip, and every member of the test team agreed: “This isn’t just good—it’s the perfect electric bike.”

When we compared the Onesport W77 electric fat bike to models in the same price range, it left them far behind. But the real surprise was that its features even outperformed electric bikes priced between 5,000 and 8,000 euros. Power, riding comfort, and build quality—all premium-level, but at a fraction of the price.

Why the Onesport W77 Is the Ultimate E-Bike

All-steel frame – durable and sturdy, designed for all surfaces.
48V 18Ah battery – up to 80–90 km with pedal assist, 35–45 km in all-electric mode.
65 Nm of torque —takes you up even the steepest hills with ease.
20×4.0” Kenda tires – perfect traction on sand, gravel, snow, and asphalt.
Hydraulic disc brakes – controlled stopping in all conditions.
Front and rear suspension —a smooth ride both in the city and off-road.
TW35 Display & Bluetooth – Connect to the Onesport app and track your journey in real time.

See also

Women's Electric Bikes
Men's electric bikes
Electric mountain bikes
City e-bikes
Electric fat bikes
Commuter e-bikes

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

Technical Specifications – At a Glance:

Frame material: Solid steel frame
Battery: 48 V, 18 Ah, removable lithium battery pack
Motor: 48 V, rated power 250 W (peak power ~500 W), torque 65 Nm
Display: LCD, Bluetooth connection to the Onesport app
Sensor: Speed sensor at the center
Foldable: No
Front fork: Aluminum crown + steel legs, travel 135 mm
Rear suspension: Leaf spring suspension (300 lbs), without locking mechanism
Gears: 1×7-speed drivetrain
Brakes: Front and rear hydraulic disc brakes (2-piston), disc size 160 × 2.3 mm
Tires: 20 × 4.0″ Kenda fat tires with reflective stripes
Mud flaps: Plastic, full-length
Recommended rider height: 160–200 cm
Business trips:
- Approx. 40–60 km on full electric power
- Approx. 80–120 km with electric assist
Speed:
- EU speed limit: 25 km/h (default)
- With or without a load, up to 45 km/h when unlocked
Package contents: Charger, user manual, tools, twist grip, pedals, pump, carrying bag, bell, cable ties
Product dimensions: 177 × 112 × 68 cm
Package dimensions: 150.5 × 30.7 × 88.6 cm
Lights: LED headlight (K-code); the taillight does not have a brake light function
Maximum angle of ascent: 30°
Charging time: 8–9 h
Net weight: 43.18 kg / gross weight: 53.68 kg
Maximum load: 90 kg

First, select a color: White

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.