The Fafrees Fafres FF20 Polar is a folding e-bike with a 1152 Wh battery. That battery is 71% above the median for its type. This bike is built for long distances, not for light weight. It suits riders who prioritize range over portability.
The FF20 Polar weighs 35 kg, which is 22% above the class median of 28.6 kg. It has a hub motor and no throttle. The top speed is 45 km/h, placing it in the fast class with assist above 25 km/h. This is a bike for commuters or leisure riders who want to cover ground quickly.
What the numbers say
| Spec | This bike | Median for its type |
|---|---|---|
| Battery | 1152 Wh | 672 Wh |
| Weight | 35 kg | 28.6 kg |
| Torque | 0 Nm | 50 Nm |
| Estimated range | 82 km | 48 km |
| Price | 1435 USD | 1068 USD |
Questions people ask about the FF20 Polar
How much does it weigh?
The FF20 Polar weighs 35 kg. That is heavy for a folding bike. The median weight for its type is 28.6 kg. You will feel the difference when lifting or carrying it.
How much torque does it have?
The motor torque is listed as 0 Nm. That is not a real value, but it is what the manufacturer publishes. The median torque for its type is 50 Nm. Without a published torque figure, you cannot compare its hill-climbing ability directly.
What speed class is it?
The FF20 Polar is a fast class e-bike. It assists up to 45 km/h. That is above the 25 km/h assist limit of standard e-bikes. Check your local rules before riding on public paths.
How far does it really go?
The manufacturer claims a range of 120 km. MathBikes estimates the range at 82 km, with a band from 72 to 92 km. That estimate is 32% below the claim. The estimate comes from a formula, not a test. You can adjust the inputs with the range calculator.
What does it cost to run?
The price is 1435 USD, which is 34% above the median for its type. Running costs depend on electricity, maintenance, and parts. The warranty is not listed, so factor that into your budget. Use the cost calculator to see long-term costs.
Where it falls short
The FF20 Polar makes a clear trade-off. It carries a huge battery, but that makes it heavy. At 35 kg, it is 22% above the class median. The motor torque is not published, which is a red flag for hill performance. And the price is 34% above the median, so you pay a premium for the range.
Who should buy it
The FF20 Polar is for riders who value range above all else. It is not for those who need a light, portable folder. If you have a long commute and can charge at work, this bike may suit you. If you live in a walk-up apartment, look elsewhere.
- You ride more than 50 km each day and want a single charge.
- You have a place to store a 35 kg bike without lifting it.
- You want a fast e-bike that can keep up with city traffic.
If you need a folding bike you can carry, this is not it. The 35 kg weight makes it impractical for public transport. Also, if you live on a steep hill, the lack of published torque is a concern. Consider a lighter bike with a known torque figure.
