Bigniu BG-S Fat Tire Electric Bike
- 1200W peak motor, 28+ MPH claimed
- 672 Wh battery, removable
- 30+ miles claimed range, 6 to 7 hour charge
- 350 lb max rider weight
- 20 inch wheels, 4.0 inch fat tires
- 7 speeds, twist grip shifter
- Dual suspension, dual disc brakes
- 90% pre-assembled, tool kit included
Updated 17 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A heavy duty fat tire e-bike with a throttle and full suspension for mixed street and trail riding. The listing gives the frame material two different ways and never states the bike's own weight.
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ASIN: B0DYFDDDMZCategory: Electric Bicycles
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Overview
Riders who want a fat tire bike with a throttle get the BIGNIU BG-S, which pairs an electric motor with a removable battery, full suspension and disc brakes. It ships mostly assembled with a tool kit for the final steps.
High rider capacity, fat tires and dual suspension make it a bike for rough paths as much as pavement. The weak spot is the listing detail, with the frame called carbon steel in one place and aluminum in another.
Who it's for
Adults who ride gravel, dirt and broken pavement and want a throttle on tap will get the most from it. Riders who need a light, foldable bike for transit should look elsewhere.
Pros and cons
- High rider weight capacity
- Full suspension soaks up rough ground
- Removable battery charges off the bike
- Headlight, taillight and LCD display
- Frame material listed two ways
- Bike weight not listed
- Tire width differs from the title
- Pedal assist levels not described
Performance notes
Top speed and hill climbing depend on the motor's peak output and the battery's energy content, while real range falls with rider weight, terrain and throttle use. Fat tires and dual suspension trade rolling efficiency for traction and comfort on loose ground. Dual disc brakes do the stopping work at speed.
Specifications
| Brand | BIGNIU |
|---|---|
| Dimensions & fit | |
| Maximum Weight Recommendation | 350 poundshigher than 72% of 266 electric bicycles |
| Wheel Size | 20 inches |
| Wheel Width | 4.0 inches |
| Capacity & performance | |
| Wattage | 1200 watts peak |
| Number Of Speeds | 7 |
| Bicycle Gear Shifter Type | Twist grip |
| Top speed | 28+ mph claimed |
| Range | 30+ miles claimed |
| Power & efficiency | |
| Lithium Battery Energy Content | 672 watt-hours |
| Construction & materials | |
| Frame Material Type | Aluminum per specs, carbon steel per bullets |
| Seat Material | Leather |
| Included components | |
| Included Components | Tool kit |
| Warranty & support | |
| Warranty Description | 1 year limited |
| Other details | |
| Electric Assist Type | Throttle on demand |
| Brake Style | Dual disc |
| Suspension Type | Dual full suspension |
| Bike Type | Electric fat tire |
| Derailleur Configuration | Rear |
| Is Assembly Required | 90% pre-assembled |
| Model Year | 2024 |
| Additional Features | LED headlight, taillight, LCD display |
| Charge time | 6 to 7 hours |
| Climbing grade | Up to 30 degrees claimed |
Closest rivals on specs
Frequently asked questions
How much assembly does the BIGNIU BG-S need?
It arrives 90% pre-assembled and a tool kit is included. The listing says only a few steps remain but does not list them.
Is the BIGNIU BG-S a pedal assist e-bike?
The specs list throttle on demand as the assist type. Pedal assist levels are not described in the listing.
What is the BIGNIU BG-S frame made of?
The bullets say carbon steel while the specs say aluminum. Ask the seller before buying if frame material matters to you.
Can the BIGNIU BG-S handle hills?
The listing claims it climbs slopes up to 30 degrees using the 1200W peak motor.
How long does the BIGNIU BG-S battery take to charge?
The removable battery recharges fully in 6 to 7 hours, according to the listing.