The Fiido M21 is a folding fat-tire electric bike with a 500W rear hub motor and a built-in torque sensor for natural pedal-assist response. It runs a 48V 11.6Ah (556.8Wh) battery, 20"x4" fat tires, a 7-speed derailleur, and a hydraulic coil-sprung front fork, with a folding aluminum-alloy frame for storage and transport.
In brief: 500W Fat Tire. 48V 11.6Ah battery. Unclassified / Off-Road. Up to 40 km/h. Aluminum frame.
Specs verified Oct 18, 2026
Where to Find
Prices tracked across 2 sellersPrice History
Price History
Price changes tracked by the crawler
Current best price $1,299.00. Over the past 90 days: low $1,299.00, high $1,299.00, average $1,299.00 — about average.
- Fiido
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Specifications
Classification
- E-Bike Class
- Unclassified / Off-Road
- Bike Type
- Fat Tire
Motor
- Motor Position
- Rear Hub
- Wattage
- 500W
- Top Assist Speed
- 40 km/h
Battery
- Voltage
- 48.0V
- Capacity
- 11.6Ah
- Energy
- 556.8Wh
- Chemistry
- Li-ion
- Estimated Range
- Up to 100 km
- Charge Time
- 7.0 hrs
Frame & Build
- Frame Material
- Aluminum
- Wheel Size
- 20" x 4" (Fat)
- Folding
- Yes
Drivetrain & Brakes
- Gears
- 7-speed
- Drivetrain
- Derailleur
- PAS Sensor
- Torque
- Throttle
- Yes
- Brakes
- Mechanical Disc
Features
- Max Payload
- 120 kg
- Suspension
- Front Only (Hardtail)
- Fenders
- Yes
- Color
- Black
Physical
- Weight
- 24.95 kg
- Dimensions (L×W×H)
- 175 cm × 580mm × 106 cm
