🚴 The king of electric bikes arrived in Kruunuvuorenranta – Koolux X9 Pro Electric Fat Bike
Imagine this: sähköpyörätehdas, which doesn't send just any bike for a test drive, but a work of art with tires. A bike called Koolux X9 Pro Electric Fat Bike arrived at the electric bike factories' shared test drive point in Kruunuvuorenranta, Helsinki – and before that the test team was skeptical. But not for long.
The first acceleration on the asphalt of the coastal road made the test rider gasp. The engine growled like a motorcycle – but quietly. The power came smoothly, and the 20-inch thick tires glided over the seams of sand, rocks and piers as if they were riding on a cloud. Stairs in between? No problem. Off-road, this fat bike behaved like a hiker who has traveled these paths before.
In the city, the Koolux X9 Electric Fatbike was like an SUV: smooth, controlled and powerful. The hills were not obstacles, but playgrounds. And when the day's tests ended, the team didn't hesitate for a moment: "This is it. This is the bike."
🔧 Technical specifications – Koolux X9 Pro Electric Fat Bike
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Motor : 250 W brushless rear hub motor
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Peak power : approx. 750 W (peak)
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Torque : up to 70 Nm
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Battery capacity : 48 V 15,6 Ah (possibility to double, up to 31,2 Ah)
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Range : 60–150 km depending on battery size and driving style
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Top speed : 25 km/h limited, unrestricted up to about 50 km/h
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Tires : 20″ × 4,0″ fatbike tires, suitable for sand, snow, gravel and asphalt
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Gear : Shimano 7-speed
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Brakes : hydraulic disc brakes front and rear
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Suspension : front fork shock absorption
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Body material : aluminum alloy
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Weight : approximately 36,4 kg
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Maximum load : up to 120 kg
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Charging time : approximately 7–8 hours
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Display : LCD display for speed, battery and assist level
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Additional features : LED lights, USB charging port, silent motor
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IP rating : IP54 – dust and splash resistant
🌆 Terrain + City = Perfect Combination
The Koolux X9 Pro Electric Fat Bike makes no compromises. It rolls smoothly on cobblestone streets, dives onto dirt roads and climbs slopes like a four-wheel drive vehicle. According to the test team, the ride was both firm and smooth. The engine's power is especially felt on uphill slopes – you only had to pedal lightly, and the bike pulled like a tractor, but without noise or vibration.
In city riding, the bike is quiet, turns nimbly and remains stable in traffic. It doesn't just ride – it glides.
See also
Women's electric bikes
Men's electric bikes
Electric mountain bikes
City electric bikes
Electric fatbikes
Commuting electric bikes
We also want to share useful information about the world of e-bikes. If you want to learn more about e-bikes, their benefits and uses, I recommend checking out the following resources:
I hope you find these links useful information!
Regards,
Electric BikeFactory Team
Manufacturer's warranty – you deal directly with the factory that sold the bike
The seller of an electric bike is the factory that manufactures or supplies the bike. The factory is the independent and sole seller of the electric bike store and is responsible for the product's delivery, warranty, and any possible defects.
Sähköpyörätehdas Suomi Oy is not a seller or guarantor of the electric bike. Sähköpyörätehdas offers you a separate customer service and technical system through which you can contact the factory's salesperson.
How to handle warranty issues
After ordering, you will receive personal usernames that allow you to chat directly with the factory salesperson.
If your e-bike has a fault:
- Log in to the service with your own usernames.
- Start a conversation with the factory that sold you the bike.
- Describe the problem as precisely as possible.
- Please include photos, videos, order number, and other necessary information requested by the factory.
- The factory salesperson will assess the matter and provide instructions for inspection, spare parts, repair, or other warranty processing.
Maintenance and assembly of electric bikes at the electric bike factory
Your e-bike can be serviced either at our Helsinki store or at service shops located elsewhere in Finland. You can easily find your nearest service point at [this link].
Assembling an electric bike
When you buy an electric bike from us, you can be confident that everything has been made as easy as possible for you. Our electric bikes are 90% pre-assembled, which means you don't have to worry about complicated assembly steps. For the final assembly, you will receive all the necessary tools and clear, step-by-step instructions to ensure that your electric bike is ready to ride in just around 30 minutes.
However, if you need help at any stage, we’re here to help. You can contact us at any time, and we offer free video tutorials via WhatsApp to help you get started. If you still don’t want to assemble your 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 maintenance should be done after about a month of riding or after the e-bike has been ridden for 100-300 kilometers. This initial maintenance includes a complete washing of the e-bike, a comprehensive check of the electrical components, brake and gear adjustments, spoke tightening, chain oiling, and a general condition check. This maintenance 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 oiling, and checks and updates to all electrical systems. We recommend annual maintenance regardless of how you use your e-bike, to keep it in top technical condition and safe all year round.
Prices for maintenance and assembly services
We keep maintenance costs competitive. The price of initial maintenance starts at 90 EUR, and comprehensive annual maintenance costs 149 EUR (incl. VAT 25,5%).
If you want us to assemble your e-bike for you, you can bring it to our store, and the assembly service costs 69 EUR.
Maintenance and assembly booking
You can book maintenance or assembly by calling our store directly or visiting our website.
If you are unable to get to our Helsinki store, you can take advantage of our service network covering the whole of Finland. [Click here] to see all our service points and their contact information.