Gotrax S4 16 Inch Folding Electric Bike
- Maximum Weight Recommendation: 264 pounds
- Wheel Size: 16 inches
- Lithium Battery Energy Content: 281 Wh
- Electric Assist Type: pedal assist
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A capable short-range folding commuter, with real-world assembly times from 15 minutes to about an hour depending on experience. Best treated as a neighborhood runabout rather than a touring e-bike.
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ASIN: B0DHN7NJDRModel: S4Category: Electric Bicycles
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Overview
A 16-inch folding electric bike with a 350W motor, removable 280.8Wh battery, and three ride modes (pure electric, pedal-assist, manual). Suited to short commutes, errands, and riders who need a bike that folds down for a car trunk or closet.
The bike carries UL2849 safety certification and includes dual disc brakes and front suspension, with a height-adjustable seat and handlebar so it can be shared between household members of different heights. The listing states 350W in the spec bullets against a Peak 500W claim in the title; treat 350W as the sustained rating and the higher figure as a short burst number.
- 350W motor, 15.5 mph top speed
- 280.8Wh removable battery
- 16-inch tires with front shock absorber
- Foldable frame for storage
Who it's for
Fits commuters covering a few miles at a time on mostly flat ground, and households that want one bike two people can share thanks to the adjustable seat and bars. Riders wanting long-range touring or hill climbing will find the 15.5 mph top speed and 15.5-mile pure-electric range limiting.
Pros and cons
- Folds for storage in a trunk or closet
- Height-adjustable seat and handlebar fit multiple riders
- Dual disc brakes and front suspension for stability
- 365-day parts coverage plus responsive support
- Folded shape is bulkier to carry than expected
- 15.5 mph top speed limits it to short trips
- Battery gauge accuracy questioned by at least one owner
Performance notes
Power comes from a 350W brushless hub motor paired with a 280.8Wh removable battery, delivering roughly 15.5 miles on pure electric power or up to 28 miles when pedal-assist stretches the charge. Dual disc brakes and a front shock absorber handle stopping and small bumps, and a three-mode switch lets a rider choose pure electric, pedal-assist, or standard pedaling.
Specifications
| Brand | Gotrax |
|---|---|
| Model | S4 |
| Dimensions & fit | |
| Maximum Weight Recommendation | 264 poundslower than 92% of 266 electric bicycles |
| Wheel Size | 16 incheslower than 89% of 409 electric bicycles |
| Capacity & performance | |
| Number Of Speeds | 1 |
| Age Range Description | Adult |
| Power & efficiency | |
| Lithium Battery Energy Content | 281 Whlower than 97% of 221 electric bicycles |
| Power Source | Electric Motor |
| Construction & materials | |
| Frame Material Type | Alloy Steel |
| Color | Black |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Electric Assist Type | pedal assist |
| Brake Style | Disc |
| Suspension Type | Front |
| Bike Type | Electric Bike, Folding Bike |
| Is Assembly Required | No |
| Specific Uses For Product | Road |
| Intended Riding Terrain | Paved Roads |
Closest rivals on specs
Vivi Gopina 16 Inch Fat Tire Step Thru Electric Bike- Lithium Battery Energy Content 281 vs 374 Wh (-25%)
URLIFE 14 Inch Folding Electric Bike- Wheel Size 16 vs 14 inches (+14%)
- Lithium Battery Energy Content 281 vs 375 Wh (-25%)
Frequently asked questions
How far can the Gotrax S4 go on a single charge?
Amazon's listing states about 15.5 miles in pure electric mode and up to 28 miles using pedal-assist, though actual range depends on rider weight and terrain.
Does the Gotrax S4 fold down small enough for a car trunk?
It folds from the middle of the frame, though one owner found the folded shape more awkward to carry than the unfolded bike despite fitting in tighter storage spaces.