Commuter
Trek FX+ 2
$2,299.99
Price
60 Nm
Torque
520 Wh
Battery
55.78 lb
Weight
Trek FX+ 2 vs Vvolt Centauri II
Two commuter e-bikes at $2,299.99–$2,399, every published spec lined up. Nothing here is estimated: a figure the manufacturer does not publish is shown as “—”.
Where they differ
- The Centauri II makes 60 Nm more torque.
- The Centauri II assists 8 mph faster.
- The Centauri II claims 10 more miles of range.
- The FX+ 2 uses a torque sensor; the Centauri II uses a torque + cadence sensor.
- The FX+ 2 is rear hub; the Centauri II is mid-drive.
- The FX+ 2 is hardtail (front only); the Centauri II is rigid.
- The FX+ 2 has a throttle; the Centauri II has no throttle.
- The FX+ 2 ships as class 2; the Centauri II ships as class 3.
Every spec, side by side
| FX+ 2 | Centauri II | |
|---|---|---|
| Headline | ||
| Price | $2,299.99 | $2,399 |
| Category | Commuter | Commuter |
| Price per Wh | $4.42 per Wh | $4.90 per Wh |
| Model year | 2026 | 2026 |
| Motor | ||
| Torque | 60 Nm | 120 Nm |
| Motor power | 500 W | 350 W |
| Peak power | — | 650 W |
| Drive | Rear hub | Mid-drive |
| Motor make | — | Vvolt |
| Sensor | Torque | Torque + cadence |
| Battery & range | ||
| Battery | 520 Wh | 490 Wh |
| Capacity | — | 13.6 Ah |
| Removable battery | Yes | Yes |
| Range (claim) | 50 mi | 60 mi |
| Range as stated | Up to 50 mi | Up to 60 miles real-world on pedal assist |
| Est. real range | 33 mi | 31 mi |
| Estimate assumes | 16 Wh per mile | 16 Wh per mile |
| Weight & capacity | ||
| Weight | 55.78 lb | 53 lb |
| Max load | 300 lb | — |
| Class & speed | ||
| Ships as | Class 2: throttle, assist to 20 mph | Class 3: pedal assist to 28 mph |
| Unlocks to | — | Class 3 |
| Class | Class 2 | Class 3 |
| Throttle | Yes | No |
| Top assisted speed | 20 mph | 28 mph |
| Build | ||
| Gears | 8-speed | — |
| Drivetrain | Shimano ESSA U2000 (11-45T) | Gates carbon belt |
| Brakes | Hydraulic disc | Hydraulic disc |
| Front rotor | 180 mm | 180 mm |
| Rear rotor | 180 mm | 180 mm |
| Suspension | Hardtail (front only) | Rigid |
| Fork travel | 63 mm | Rigid |
| Rear travel | None | None |
| Front suspension | Yes | No |
| Suspension seatpost | 50 mm | No |
| Tires | 650 x 50mm (27.5 x 2.0) Bontrager GR0 Comp | — |
| Display | LCD display | — |
| Frame | Alpha Gold Aluminum | — |
| Sizes | S-XL | S/M, M/L, L/XL |
| Step-through option | No | — |
| Included | ||
| Lights | Yes | Yes |
| Fenders | Yes | — |
| Rack | Yes | — |
| Kickstand | Yes | — |
| Safety | UL 2849 | UL 2849* |
| Safety certification | UL 2849: full system | UL 2849: most models, confirm this one |
| As the maker states it | All e-systems that Trek currently uses have been tested to UL 2849 and EN 15194 as appropriate, and certified to UL 2849 | The Alpha II is tested and certified to the rigorous UL-2849 standard |
Specs transcribed from www.trekbikes.com on 09/30/2026 and vvolt.com on 09/20/2026. Manufacturers revise specs without notice: confirm before buying.