Vivi ACE01 Electric Bike for Adults
- Electric Bicycle
- 26 inches
- 330 pounds
- 720 Wh
- Better rated than 57%
- More reviewed than 85%
A fat-tire e-bike whose torque-sensor pedal assist earned consistent praise for feeling natural, holding up well across hundreds of miles for most reviewers.
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How it ranks among the 478 electric bicycles we track
4.5★ across 99 Amazon ratings, Bayesian-smoothed toward the category average.
99 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 478 electric bicycles we track - how the scorecard works · full electric bicycles data report. Confidence: medium - useful but incomplete evidence.Last refreshed Jun 21, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
Vivi's ACE01 is a fat-tire electric mountain bike that leans on a torque sensor for pedal assist, backed by a 48V 15Ah battery and hydraulic disc brakes.
The listing's power figures are worth reading carefully: the title cites a 1500W peak motor while the bullet specs describe the rated output as 750W, so treat 1500W as a burst figure rather than sustained power. What reviewers consistently single out is the torque sensor, which several described as noticeably smoother than the cadence sensors common on cheaper e-bikes, responding to actual pedaling effort instead of just detecting motion. Multiple riders over 250 lbs reported the bike handling their weight and hills without strain.
- 48V 15Ah removable battery, 21700 cells
- 26 x 4.0 inch fat tires
- 5 ride modes including throttle and cruise control
- 330 lb rider capacity, adjustable seat height
Who it's for
This suits riders wanting a fat-tire e-bike for mixed terrain, gravel, snow, or light trail, with a natural-feeling pedal assist, including larger riders up to the 330 lb rated capacity. Less suited to anyone who needs sustained 1500W output rather than a peak burst figure.
What buyers say
From Amazon customer reviews.
Reviewers, including several riders over 250 lbs, consistently praised the torque sensor for delivering pedal assist that felt natural rather than laggy, and multiple riders logging hundreds of miles reported strong reliability, with range close to the rated 40-60 miles. Reported issues were minor and isolated: one headlight failure after 125 miles and one flat tire from a nail, both resolved without affecting the bike's overall use.
Strengths and trade-offs
Drawn from this product's published specifications.
- Torque sensor gives smooth, natural pedal assist
- Strong hill climbing reported by heavier riders
- Good range, around 60 miles at low assist
- Handled snow, gravel, and light trail riding well
- 1500W is a peak figure; rated output is 750W
- Occasional reports of headlight or minor part failures
Performance notes
The torque sensor measures actual pedaling force and scales assist accordingly, which reviewers said avoided the jerky, laggy starts they associated with cadence-based systems on other bikes. The 48V 15Ah battery is rated for 40-60 miles, and one rider logging nearly 500 miles reported around 60 miles per charge on the lowest assist level. Dual hydraulic brakes and an adjustable front suspension fork handle the extra weight of the 26 x 4.0 inch fat tires, and the aluminum frame supports riders up to 330 lbs with an adjustable seat for riders from 5'3 to 6'5.
Specifications
| Brand | Vivi |
|---|---|
| Model | ACE01 |
| Dimensions & fit | |
| Wheel Size | 26 inches |
| Maximum Weight Recommendation | 330 pounds |
| Item Weight | 72 pounds |
| Size | 26 inches |
| Wheel Width | 4 inches |
| Capacity & performance | |
| Bicycle Gear Shifter Type | Trigger |
| Bicycle Drivetrain Type | Derailleur |
| Number Of Speeds | 7 |
| Age Range Description | Adult |
| Power & efficiency | |
| Lithium Battery Energy Content | 720 Wh |
| Wattage | 750 watts |
| Power Source | Electric motor |
| Construction & materials | |
| Frame Material Type | Aluminum |
| Wheel Material | Rubber |
| Color | Green |
| Included components | |
| Included Components | Charger, E Bike Accessory Kit, Electric Bike |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Bike Type | Electric Bike, Electric Mountain Bike, Fat Tire Electric Bike, Commuting Ebike, City Ebike, Adult Electric Bicycle |
| Suspension Type | Front |
| Electric Assist Type | Torque Sensor |
| Is Assembly Required | Yes |
| Additional Features | Aluminum Alloy Frame, 750W Motor(Peak 750W), 48V 720Wh Li-ion Battery, Torque Sensor, Dual Hydraulic Brakes, Lockable Front Suspension Fork, LCD Display, 5 Working Modes |
| Brake Style | Disc |
| Style Name | Standard |
| Derailleur Configuration | Rear |
Other Vivi electric bicycles
How it compares
This product against the closest alternatives we track in electric bicycles.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Vivi ACE01 Electric Bike for AdultsThis product | 4.5 / 5 | 99 | 3.9 / 5 |
| Wooken Electric Bike for Adults with 500W MotorWooken | 4.4 / 5 | 312 | 4.1 / 5 |
| TotGuard Electric BikeTotGuard | 4.4 / 5 | 286 | 4.1 / 5 |
| ANCHEER 14" Folding Electric Bike for TeensAncheer | 4.2 / 5 | 329 | 4.0 / 5 |
| Gotrax 16" Folding Electric BikeBrand | 4.4 / 5 | 555 | 4.0 / 5 |
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Questions about the Vivi ACE01
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Is the Vivi ACE01 motor 750W or 1500W?
The listing title cites 1500W as a peak figure while the detailed specs list the rated motor output at 750W.
What kind of terrain is the ACE01 suited to?
Reviewers used it on gravel, snow, and light trail riding thanks to the 26 x 4.0 fat tires and front suspension fork.
How does the torque sensor compare to cadence-based e-bikes?
Reviewers who had used cadence-sensor e-bikes described the ACE01's torque sensor as smoother and more responsive to actual pedaling effort.