Foldable Fat-Bike Design
Despite its substantial 20 × 4.0-inch tyres and 35 kg weight, both the main frame and handlebars fold. This makes storage and vehicle transport easier than with a fixed-frame high-speed fat bike.
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1 year of cover UK support
Worth £159 Included
Frame, forks, motor, controller, battery, charger and factory-fitted electrical and mechanical parts.
Normal wear, accidental damage, misuse and unauthorised modifications are generally excluded.
Contact our UK team with your order number and a few photos.
Manufacturer warranty period · 12 Months
Separate manufacturer terms apply. Warranty periods are not added together.
From our Nuneaton showroom
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The Fafrees FF20 Polar Dual Battery Electric Bike is a folding fat-tyre e-bike with a 48V dual-battery system, 500W rear hub motor and 20×4.0-inch tyres.
With approximately 998Wh total battery capacity, 65Nm of torque, front suspension and Shimano 7-speed gearing, the FF20 Polar is built for extended leisure rides, commuting and mixed terrain where range matters.
UK road-use note: This configuration exceeds the standard UK EAPC 250W continuous-power limit. Public-road use is subject to applicable vehicle approval, registration, tax, insurance, licensing and motorcycle-helmet requirements.
Range and performance figures are manufacturer estimates. Actual results vary with rider weight, terrain, weather, tyre pressure, load and assistance level.
| Collection | Electric Bikes |
|---|---|
| Brand | Fafrees |
| Motor Power | 860W |
| Battery | 48V 20.8AH |
| Top Speed | 15.5 MPH |
| Max Range | 71 MILES |
| Charging Time | Approx. 8 hours |
| Shock Absorbers | 40 mm front suspension fork |
| Wheel Size | 20 × 4.0" tyres |
| Brakes | Mechanical disc brakes |
| Gears | Shimano 7-speed |
| Bike Weight | 34 KG |
Check rider measurements and sizing before you order.

Fit guidance: Folding step-through frame with a low 42 cm standover.
Sizes are a guide. Rider proportions, footwear and setup can affect fit.
Despite its substantial 20 × 4.0-inch tyres and 35 kg weight, both the main frame and handlebars fold. This makes storage and vehicle transport easier than with a fixed-frame high-speed fat bike.
FAFREES classifies the Polar HS as an EU L1e-B type-approved vehicle, capable of speeds up to 45 km/h rather than the 25 km/h limit of a standard pedelec.
The FF20 Polar HS uses a dual-battery configuration totalling 24Ah or 26.8Ah, providing up to 1152Wh or 1286.4Wh of energy and a manufacturer-listed range extending as high as 130 km depending on version.
1 x Fafrees FF20 Polar Electric Bike
1 x Front & Rear Fender Set
FREE
1 x Charger
2 x Keys
1 x Tool Kit
1 x User Manual
Watch the assembly guide below before first setup.
We stock a range of spare parts in the UK and can source additional components for this model. Contact our team to check prices, compatibility and availability.