At a glance
The Fiido C21 is a gravel electric bike listed at $1,099. Manufacturer specs put it at 250W of rated motor power, a 209Wh battery, a claimed 62 mile range, and a 16 mph top speed, at 39 lbs.
Next to the 61 other electric bikes in its price band ($824–$1,374), its strongest numbers are weight (39 lbs vs 75 lbs avg) and speed for its weight (0.40 mph/lb vs 0.36 mph/lb avg). The tradeoffs are battery capacity (209Wh vs 849Wh avg) and motor power (250W vs 747W avg). Beyond the headline numbers it brings an IP54, splash resistant ingress rating.
Spec-based analysis, computed from manufacturer-published numbers and compared against 61 similar electric bikes by price. No hands-on testing yet.
Strengths & weaknesses
Designed for: Gravel and Mixed TerrainStrengths
39 lbs vs 75 lbs avg
IP54, splash resistant
0.40 mph/lb vs 0.36 mph/lb avg
Weaknesses
209Wh vs 849Wh avg
250W vs 747W avg
5.4 Wh/lb vs 11.1 Wh/lb avg
16 mph vs 26 mph avg
Compared with 61 similarly priced models ($824–$1,374), from manufacturer specs.
Performance Overview
Category scores out of 100 from manufacturer specs, with the median of 61 similarly priced e-bikes ($824–$1,374) for context
Scores out of 100. The gray tick marks the median of similarly priced e-bikes.
How to read this: each spoke is a category score out of 100, computed from manufacturer specs on fixed scales. Every vehicle is measured on the same scales, so scores don't shift as our database grows. Further from the center is better. The gray line shows the median score of similarly priced e-bikes for context.
Full Specifications
Fiido C21
Powertrain
- Motor Type
- Hub Brushless
- Nominal Power
- 250 W
- Torque
- 22 Nm
- Sensor Type
- Torque
- Assist Levels
- 5
Battery & Range
- Capacity
- 208.8 Wh
- Voltage
- 36 V
- Claimed Range
- 62.1 mi100 km
- Battery Position
- In Frame
Build Quality
- Front Brake
- Hydraulic Disc
- Rear Brake
- Hydraulic Disc
- Brake Brand
- Tektro
- Gears
- 9
- Puncture Protection
- EN 15194
Ride Comfort
- Front Suspension
- Rigid
Utility
- Weight
- 38.6 lbs17.5 kg
- Max Load
- 264 lbs119.7 kg
- Fenders
- Kickstand
- IP Rating
- IP54
- Lights
- Display
- Color LCD
- Connectivity
- Bluetooth
- App Compatible
Classification
- Category
- Gravel
- Top Assist Speed
- 15.5 mph24.9 km/h
Wheels & Tires
- Wheel Size
- 700c
- Tire Size
- 700x40C
- Tire Brand
- CST
Frame & Geometry
- Frame Style
- Step Over
- Sizes
- M, L, XL
Frame & Geometry
manufacturer figures, per frame size| Measurement | M | L | XL |
|---|---|---|---|
| Seat Height (min) | 34.84"88.5 cm | 36.22"92 cm | 38.58"98 cm |
| Seat Height (max) | 41.14"104.5 cm | 44.49"113 cm | 46.85"119 cm |
| Standover Height | 31.5"80 cm | 32.76"83.2 cm | 34.57"87.8 cm |
| Overall Length | 70.47"179 cm | 70.87"180 cm | 71.46"181.5 cm |
| Stack | 597 mm | 618 mm | 660 mm |
| Reach | 402 mm | 411 mm | 428 mm |
| Stack/Reach Ratio | 1.49 | 1.50 | 1.54 |
| Top Tube Length | 585 mm | 600 mm | 630 mm |
| Seat Tube Length | 510 mm | 550 mm | 610 mm |
| Seat Tube Angle | 73° | 73° | 73° |
| Head Tube Length | 150 mm | 170 mm | 190 mm |
| Head Tube Angle | 71.5° | 72° | 72° |
| BB Drop | 68 mm | 68 mm | 68 mm |
| Chainstay Length | 445 mm | 445 mm | 455 mm |
| Wheelbase | 1066 mm | 1077 mm | 1106 mm |
Letters mark where each measurement is taken on the frame. Figures are the manufacturer's, per frame size.
Rider fit
manufacturer's recommended height per sizeCompare Fiido C21 to other vehicles
Pick a challenger and see every spec side by side.
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