BIGNIU Adult Electric Bike
- Electric Bicycle
- 352.74 pounds
- 1404 Wh
- Electric motor
The spec sheet promises high power and long range, but reviews describe a battery that has sparked during use, so check the battery compartment and kickstand closely before riding.
As an Amazon Associate, ProductDome may earn a commission from qualifying purchases made through links on this page.
Colors Available
Need a different one? Pick on Amazon →
How it ranks among the 478 electric bicycles we track
3.8★ across 10 Amazon ratings, Bayesian-smoothed toward the category average.
10 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: limited - limited rating history.Last refreshed Jun 21, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A 24 inch fat tire electric bike with dual motors rated at a 6000W peak, a 60V 20Ah removable battery, front and rear shock absorbers, and six riding modes ranging from single motor throttle to pedal only.
- Dual motors rated at a 6000W peak
- 60V 20Ah removable battery
- 24x4.0 inch fat tires
- Six riding modes including throttle, pedal assist and walk assist
Who it's for
Riders comfortable inspecting a bike carefully on arrival and troubleshooting with the seller directly, rather than buyers who need reliability guaranteed out of the box.
What buyers say
From Amazon customer reviews.
Reviews split sharply. Buyers praised solid build materials and quick email customer service, and one rider reprogrammed the bike past its stock 28 mph limit to reach 49 mph with 80-plus miles per charge. Others reported serious problems: one bike had no acceleration and a battery that nearly died at 18 miles, another saw sparks from the battery compartment while riding, plus a kickstand that bends or collapses and throttle power described as uncontrollable off pavement.
Strengths and trade-offs
Drawn from this product's published specifications.
- Customer service responded within an hour by email for one buyer
- Solid build materials noted by multiple reviewers
- Top speed can be reprogrammed above the stock 28 mph limit
- Battery reported sparking during a ride
- Kickstand reported to bend or collapse easily
- One unit arrived with damage
- Acceleration and range fell short of advertised for one buyer
Performance notes
Real world results varied widely among reviewers: one bike struggled to reach 18 miles before the battery nearly died and never approached top speed, while a reprogrammed unit reportedly hit 49 mph and 80-plus miles per charge. One rider called the dual motor throttle uncontrollable off pavement.
Specifications
| Brand | Bigniu |
|---|---|
| Model | BG-X PRO/FT-02P/FR-666 |
| Dimensions & fit | |
| Maximum Weight Recommendation | 352.74 pounds |
| Size | Larger |
| Capacity & performance | |
| Bicycle Gear Shifter Type | Electronic |
| Bicycle Drivetrain Type | Hub Drive |
| Number Of Speeds | 7 |
| Age Range Description | Adult |
| Power & efficiency | |
| Lithium Battery Energy Content | 1404 Wh |
| Power Source | Electric motor |
| Construction & materials | |
| Frame Material Type | Alloy Steel |
| Wheel Material | Alloy Steel |
| Color | DARK BLACK |
| Included components | |
| Included Components | Pump |
| Warranty & support | |
| Warranty Type | Full |
| Warranty Description | 1 year |
| Other details | |
| Bike Type | Electric Bike |
| Suspension Type | Dual |
| Electric Assist Type | Electric |
| Is Assembly Required | No |
| Intended Riding Terrain | Mixed Terrain (Road & Trail), Urban Terrain |
| Additional Features | Taillight |
| Brake Style | Disc |
| Specific Uses For Product | Mixed Terrain (Road & Trail) |
| Theme | Motorcycle |
Other Bigniu electric bicycles
How it compares
This product against the closest alternatives we track in electric bicycles.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| BIGNIU Adult Electric BikeThis product | 3.8 / 5 | 10 | 2.7 / 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 |
Similar electric bicycles from other brands
Questions about the Bigniu BG-X PRO/FT-02P/FR-666
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What is the real world range of the PHJU e-bike?
Results varied widely in reviews, from one buyer getting only 18 miles before the battery nearly died to another reporting 80-plus miles per charge after reprogramming.
Is the kickstand reliable?
One reviewer reported the kickstand bends or collapses easily.
Have buyers reported safety issues?
Yes, one reviewer reported sparks coming from the battery compartment while riding.