Commuter
Aventon Pace 4
$1,599
Price
60 Nm
Torque
733 Wh
Battery
58.2 lb
Weight
Aventon Pace 4 vs Fiido C21
Two commuter e-bikes at $1,099–$1,599, every published spec lined up. Nothing here is estimated: a figure the manufacturer does not publish is shown as “—”.
Where they differ
- The Pace 4 carries 524 Wh more battery.
- The Pace 4 assists 13 mph faster.
- The C21 is 19.6 lb lighter.
- The C21 costs $500 less.
- The Pace 4 carries 36 lb more total load.
- The Pace 4 claims 8 more miles of range.
- The Pace 4 uses a torque + cadence sensor; the C21 uses a torque sensor.
- The Pace 4 is rigid + susp. seatpost; the C21 is rigid.
- The Pace 4 has a throttle; the C21 has no throttle.
Every spec, side by side
| Pace 4 | C21 | |
|---|---|---|
| Headline | ||
| Price | $1,599 | $1,099 |
| Category | Commuter | Commuter |
| Price per Wh | $2.18 per Wh | $5.26 per Wh |
| Model year | 2026 | 2026 |
| Motor | ||
| Torque | 60 Nm | — |
| Motor power | 500 W | 250 W |
| Peak power | 864 W | — |
| Drive | Rear hub | Rear hub |
| Motor make | Aventon | Mivice M080 |
| Sensor | Torque + cadence | Torque |
| Battery & range | ||
| Battery | 733 Wh | 208.8 Wh |
| Voltage | 36V | — |
| Capacity | 20 Ah | — |
| Cells | LG 21700 | DMEGC |
| Removable battery | Yes | — |
| Range (claim) | 70 mi | 62 mi |
| Range as stated | Up to 70 miles | Up to 62.14 miles |
| Est. real range | 46 mi | 17 mi |
| Estimate assumes | 16 Wh per mile | 12 Wh per mile |
| Weight & capacity | ||
| Weight | 58.2 lb | 38.6 lb |
| Max load | 300 lb | 264 lb |
| Class & speed | ||
| Ships as | Class 2: throttle, assist to 20 mph | — |
| Unlocks to | Class 3 | — |
| Class | Class 2–3 | — |
| Throttle | Yes | No |
| Top assisted speed | 28 mph | 15.5 mph |
| Build | ||
| Gears | 8-speed | 9-speed |
| Drivetrain | Shimano Altus | 9-speed |
| Brakes | Hydraulic disc | Hydraulic disc |
| Front rotor | 180 mm | — |
| Rear rotor | 180 mm | — |
| Suspension | Rigid + susp. seatpost | Rigid |
| Fork travel | Rigid | Rigid |
| Rear travel | None | None |
| Front suspension | No | No |
| Suspension seatpost | 50 mm | No |
| Tires | 27.5 x 2.1 | 700 x 40c (27.6 x 1.57 in), CST or Kenda |
| Display | Aventon BC147 | 2.4" color LCD |
| Frame | 6061 aluminum | Aluminum alloy |
| Sizes | R, L | M, L, XL |
| Step-through option | Yes | No |
| Included | ||
| Lights | Yes | Yes |
| Fenders | — | Yes |
| Rack | — | No |
| Kickstand | Yes | Yes |
| Safety | UL 2849 | — |
| Safety certification | UL 2849: full system | — |
| As the maker states it | UL and TUV Safety Certified - UL 2849 / UL 2271 | Product pages show a "CE/UKCA/UL Certified" badge without naming a UL standard; the FAQs list EN15194, CE, UN38.3 and MSDS. Only the Titan cargo bike shows a UL 2849 certificate |
| Warranty | 2 yr | 2 yr |
| Warranty terms | Two-Year Limited Warranty on frames and framesets (brand policy) | Frame 36 months; motor, battery, display, controller, fork and drivetrain 24 months; torque sensor 6 months; lights, wheels and wear parts 3 months (brand policy) |
Specs transcribed from www.aventon.com on 09/19/2026 and fiido.com on 09/30/2026. Manufacturers revise specs without notice: confirm before buying.