Jasion Thunder/PRO/ST Electric Bike
- Electric Bicycle
- 26 inches
- 330 pounds
- Electric Bike
- More reviewed than 90%
A well-reviewed value ebike for commuting and errands, but confirm which trim you are ordering since power, range and weight limit differ by model, and be aware of a documented cold-weather battery failure report.
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How it ranks among the 478 electric bicycles we track
4.2★ across 149 Amazon ratings, Bayesian-smoothed toward the category average.
149 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
Jasion sells the Thunder line in three trims, base, PRO and ST, with peak power, range, top speed and load capacity all varying by trim (up to 2000W peak, 90 miles, 35 mph and 500 lb depending on which one you order). All three share 26 by 4 inch fat tires, dual hydraulic disc brakes and a UL-certified electrical system.
Reviewers who bought the base Thunder rather than PRO or ST generally felt the pricier trims were not worth the jump for most riding. The line targets commuting and mixed-terrain riding rather than singletrack, and Jasion backs it with a 24-month motor, battery and controller warranty plus a remote-lock security feature.
- Three trims: Thunder, PRO, ST
- 26x4 fat tires, dual hydraulic disc brakes
- 48V 18Ah battery, up to 80 mile range
- UL-certified electrical system
Who it's for
Fits adult riders under about 400 lb on the base spec who want a fat-tire commuter with real pedal-assist range. One reviewer at 6 foot 6 found the frame too small, so taller riders should check geometry before buying.
What buyers say
From Amazon customer reviews.
Buyers who kept the base Thunder over the pricier trims felt the extra cost of PRO or ST bought little beyond a rear shock and a bit more range. Recurring complaints include a battery that would not recharge after a few months in a cold garage with no replacement in stock, missing assembly hardware, and a return policy that can claw back up to half the purchase price. On the positive side, multiple reviewers called out easy solo assembly, confident-feeling fat tires on sand and trail terrain, and hydraulic brakes that stop hard.
Strengths and trade-offs
Drawn from this product's published specifications.
- Fat tires handle sand, snow and city streets
- 7-speed Shimano shifting with 5 assist levels
- Hydraulic disc brakes stop quickly
- 24-month warranty on motor, battery and controller
- At least one reported battery failure after cold storage, with replacement stock unavailable
- Hardware such as zip ties and screws missing from some boxes
- Return policy can cost up to half the price
- 82 lb shipping weight needs two people to unbox
Performance notes
The 7-speed Shimano drivetrain and 5 assist levels let riders dial in anywhere from a 10 mph cruise to a reported 28 mph on pedal assist. Dual hydraulic disc brakes bring the bike to a stop in about 2 seconds per spec, though one buyer's real-world test found the base motor struggled on a steep hill even with assist engaged.
Specifications
| Brand | Jasion |
|---|---|
| Dimensions & fit | |
| Wheel Size | 26 inches |
| Maximum Weight Recommendation | 330 pounds |
| Capacity & performance | |
| Number Of Speeds | 7 |
| Age Range Description | Adult |
| Construction & materials | |
| Frame Material Type | Aluminum |
| Wheel Material | Aluminum |
| Color | Obsidian Black |
| Included components | |
| Included Components | ebike |
| Other details | |
| Bike Type | Electric Bike |
| Suspension Type | Front |
| Additional Features | 26"x4" Fat Tire Ebike, Adjustable Seat, Fenders, Cargo Rack, Front Suspension, Hydraulic Disc Brakes, Rechargeable |
| Brake Style | Disc |
| Style Name | Thunder Standard |
Other Jasion electric bicycles
How it compares
This product against the closest alternatives we track in electric bicycles.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Jasion Thunder/PRO/ST Electric BikeThis product | 4.2 / 5 | 149 | 3.5 / 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 Jasion electric bicycles
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What is the difference between the Jasion Thunder, PRO and ST?
They differ in peak power (2000W vs 1800W), battery capacity (1040Wh vs 864Wh), top speed and load capacity (500 lb vs 400 lb); the base Thunder is the lower-spec, lower-price version.
How heavy is the Jasion Thunder to unbox?
One reviewer measured it at 82 lb out of the box and recommended a second person to help lift it out.
Does the Jasion Thunder come assembled?
No, it ships requiring assembly; reviewers describe it as straightforward and doable solo in about an hour, though hardware has occasionally been missing.