Gotrax 20" Folding Electric Bike with 40Miles
- Electric Bicycle
- 20 inches
- 264 pounds
- 374 Wh
- More reviewed than 99%
A folding e-bike that delivers real commuting range and trunk-friendly folding, though it runs heavier than its folding shape suggests, so plan for that when lifting it.
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How it ranks among the 478 electric bicycles we track
4.2★ across 663 Amazon ratings, Bayesian-smoothed toward the category average.
663 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
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
A 20-inch folding electric bike with a 48V, 500W peak motor, 5 pedal-assist levels and an LCD display, built to fold for trunk storage and daily commuting.
Multiple buyers describe the bike as heavier than they expected for something that folds, closer to 50 lbs, though most still found assembly manageable in under an hour. One reviewer flags a real gotcha worth knowing before you assume it's dead on arrival: the battery key needs to turn all the way to click into full engagement, not just partway.
- 48V/7.8Ah battery, peak 500W motor
- 5 pedal-assist levels with LCD display
- Folds to 37.4 x 17.7 x 27.5 inches
- Dual disc brakes, LED headlight and bell
Who it's for
Fits commuters and casual riders who want a folding e-bike that stores in a car trunk for park rides or a work commute. Less suited to anyone who needs a genuinely light bike to carry by hand over distance.
What buyers say
From Amazon customer reviews.
Commuters report the bike holding close to 20 mph even on inclines, with a full charge covering more than two round trips of a 5-mile commute. Several buyers, including older and smaller-framed riders, found it heavier than expected for a folding bike but manageable once assembled, and one reviewer needed a few days of troubleshooting with Gotrax support before learning the battery key has to be turned completely to engage power.
Strengths and trade-offs
Drawn from this product's published specifications.
- Folds to fit inside a car trunk
- Reaches and holds 20 mph on inclines
- Dual disc brakes plus LED headlight
- Heavier than typical folding e-bikes
- Battery key must be turned fully to engage
- Assembly can take close to an hour
Specifications
| Brand | Brand |
|---|---|
| Model | R1 Black |
| Dimensions & fit | |
| Wheel Size | 20 inches |
| Maximum Weight Recommendation | 264 pounds |
| Item Weight | 45 pounds |
| Size | 20 inches |
| Capacity & performance | |
| Bicycle Gear Shifter Type | Twist Grip |
| Bicycle Drivetrain Type | Twist-Shift |
| Number Of Speeds | 5 |
| Age Range Description | Adult |
| Power & efficiency | |
| Lithium Battery Energy Content | 374 Wh |
| Wattage | 350 watts |
| Power Source | Battery |
| Construction & materials | |
| Frame Material Type | Aluminum |
| Wheel Material | Aluminum |
| Color | Black |
| Included components | |
| Unit Count | 1 |
| Included Components | Charger, Electric Bike |
| Warranty & support | |
| Warranty Type | Limited |
| Warranty Description | 6 months |
| Other details | |
| Bike Type | Electric Bike |
| Suspension Type | Rigid |
| Electric Assist Type | Pedal-Assist |
| Is Assembly Required | Yes |
| Intended Riding Terrain | Paved Roads, Unpaved Trails |
| Additional Features | Foldable, Lightweight, Portable |
| Brake Style | Disc |
| Specific Uses For Product | Camping Riding, Campus Ride, Commuting, Run Errand |
| Style Name | 20" 40miles R1 Black |
| Derailleur Configuration | Rear |
Other Brand electric bicycles
How it compares
This product against the closest alternatives we track in electric bicycles.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Gotrax 20" Folding Electric Bike with 40MilesThis product | 4.2 / 5 | 663 | 3.7 / 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 |
| EUY Electric Bike for Adults with Peak 1500W MotorEUY | 4.5 / 5 | 301 | 4.0 / 5 |
Similar electric bicycles from other brands
Questions about the Brand R1 Black
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How far can the Gotrax R1 go on a single charge?
It's rated for up to 15.5 miles on pure electric power or about 25 miles using pedal assist, and reviewers report similar real-world range.
Why won't my Gotrax R1 turn on?
A common cause is the battery key not being turned all the way. It needs to click fully into the locked, engaged position under the frame, not just partway.
Is the Gotrax R1 easy to fold and carry?
It folds to fit a car trunk, but multiple reviewers describe it as heavier than expected for a folding bike, closer to 50 lbs.