KOOLUX X7 750W Folding Electric Fat Bike – a long-range electric fat bike with hydraulic brakes and a large 48V 25Ah battery
The KOOLUX X7 750W is a powerful folding electric fat bike built for long rides, year-round use, and demanding conditions. This e-bike combines a very large 48V 25Ah battery, hydraulic disc brakes, and wide 20×4.0” fat bike tires into a single, high-performance package.
During the Sähköpyörätehdas team’s test ride, the X7 made a particularly strong impression with its stability, massive battery capacity, and smooth ride quality—even on rough terrain. This electric fat bike feels safe, powerful, and extremely comfortable, even on long rides.
⚡ 750W performance – a powerful electric fat bike for all kinds of riding
The KOOLUX X7 electric bike offers extremely powerful traction and stable performance in a variety of environments.
The bike performs exceptionally well:
✔ For city riding
✔ On gravel roads
✔ In the snow
✔ On forest trails
✔ On long rides
✔ For commuting
A powerful electrical system is especially helpful:
⚡ On uphill slopes
⚡ Into the wind
⚡ With a heavier load
🔋 48V 25Ah lithium battery – extremely long range
The KOOLUX X7 electric fat bike is equipped with a large 48V 25Ah lithium-ion battery, which provides a range of approximately 80–120 kilometers on a single charge.
The large battery capacity makes this bike perfect:
🚴 For long rides
🏕️ For adventures
🌆 For everyday use
🏙️ For commuting
The removable battery makes it easy to charge at home or at work.
🛞 20×4.0” fatbike tires – maximum traction and stability
The wide 20×4.0” Kenda tires offer excellent traction and a stable ride on almost any surface.
They work great:
✔ In snow
✔ On sand
✔ In mud
✔ On gravel roads
✔ On wet asphalt
During the test drive, the tires' stability and smoothness in particular received a lot of praise.
🛠️ Foldable frame – practical and versatile
The KOOLUX X7 electric fat bike folds easily to take up less space, which makes it easier to:
🚗 Transport
🏡 Storage
🚙 Use with a RV
🏕️ Camping
Even though the frame is foldable, the bike feels very sturdy and stable while riding.
🛑 Hydraulic disc brakes – safety in all conditions
Hydraulic disc brakes provide highly effective and precise braking performance even at high speeds and in challenging weather conditions.
The brakes perform reliably:
✔ On wet roads
✔ Off-road
✔ On gravel
✔ During emergency braking
⚙️ Stable ride and good handling
The KOOLUX X7 electric bike combines:
🔧 Wide fatbike tires
🔧 A stable frame
🔧 A powerful electric system
This makes driving feel very controlled and safe, even on longer trips.
📺 Clear LCD screen
The LCD screen clearly displays:
🔋 Battery charge level
⚡ Speed
📍 Ride data
🚴 Assist level
💧 IP54 water resistance – built to withstand Finnish weather conditions
The IP54 rating helps protect the electrical system from rain and splashes, making the bike a good choice for year-round use.
👤 Who is the KOOLUX X7 electric fat bike best suited for?
This foldable electric fat bike is perfect for:
🚴 For off-road riding
🌄 For long trips
🏙️ For city riding
❄️ For winter use
🏕️ For adventures
👨 For men and women
⚡ For riders who want an e-bike with a long range
✅ Why choose the KOOLUX X7 electric fat bike?
🔋 Large 48V 25Ah battery
⚡ Powerful 750W electric system
🛞 20×4.0” Kenda fatbike tires
🛑 Hydraulic disc brakes
🛠️ Foldable frame
📺 LCD display
💧 IP54 water resistance
🚴 Stable and smooth ride
🌄 Suitable for year-round use
🔧 Removable logo for OEM use
The KOOLUX X7 offers a highly competitive option for riders looking for a powerful, long-range electric fat bike for year-round use.
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


















Repayment period: 1–20 years, starting at about 9€/month
Interest rates are significantly lower than those at Klarna or Walley.
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