TST Electric Bike for Adults
- Electric Bicycle
- Orange
- 6 months
- Tool Kit
- More reviewed than 87%
Most reviewers describe smooth power delivery and strong customer service, but at least one buyer received a unit with missing screws and a motor that would not run, so inspect the bike thoroughly on arrival.
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How it ranks among the 478 electric bicycles we track
4.3★ across 118 Amazon ratings, Bayesian-smoothed toward the category average.
118 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: medium - useful but incomplete evidence.Last refreshed Jun 21, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The TST R9 is a fat-tire electric bike with a 750W motor (1500W peak), a removable 48V 15Ah battery, front and rear suspension and mechanical disc brakes, built for commuting and off-road riding on 20 by 4 inch tires.
The listed 1500W figure is the motor's peak output, not its continuous rating, which the description itself lists as 750W. Range is claimed at up to 60 miles in pedal-assist mode or 40 miles on throttle alone, and the bike ships 90 percent pre-assembled with a video guide for the rest.
- 750W motor with 1500W peak output
- Removable 48V 15Ah battery, up to 60 miles PAS range
- 20 by 4 inch fat tires with front and rear suspension
- 90 percent pre-assembled, 450-pound max load
Who it's for
It suits riders wanting an affordable fat-tire ebike for commuting or trail riding who are comfortable finishing the last 10 percent of assembly themselves. Quality control has been inconsistent according to reviews, so it is a weaker fit for buyers who cannot tolerate the possibility of a defective unit and slow support if one arrives that way.
What buyers say
From Amazon customer reviews.
Owners generally described smooth, consistent power delivery, pedal-assist flexibility and responsive customer service, including replacement parts sent for a faulty throttle and a speed-limiter unlock that one buyer said the seller walked them through. The clearest negative case was a buyer whose bike arrived with missing screws, misaligned holes and a motor that never worked, plus a sheared chain-mounting bolt, and who said the seller offered no resolution.
Strengths and trade-offs
Drawn from this product's published specifications.
- Quality control appears inconsistent between units
- 1500W figure is peak power, not continuous output
- One reviewer received a unit with missing screws and a non-functioning motor
Performance notes
The 750W motor with 1500W peak output and three power modes is what gives the pedal-assist range its claimed 40 to 60 mile spread, since throttle-only riding draws more continuous current than pedal-assist and shortens range accordingly. Front and rear suspension plus 20 by 4 inch tires are the mechanism behind the smoother ride reviewers described on rougher terrain, cushioning impacts before they reach the rider. The 7-speed gearing lets riders match cadence to terrain, which several owners said made climbs and flat cruising both feel manageable rather than one-speed compromises.
Specifications
| Brand | TS TST GRP LLC |
|---|---|
| Color | Orange |
| Warranty Description | 6 months |
| Included Components | Tool Kit |
Other TS TST GRP LLC electric bicycles
How it compares
This product against the closest alternatives we track in electric bicycles.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| TST Electric Bike for AdultsThis product | 4.3 / 5 | 118 | 3.8 / 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 TS TST GRP LLC electric bicycles
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Is the TST ebike's motor 750W or 1500W?
750W is the continuous motor rating; 1500W is the peak output figure, not a sustained rating.
How far can it ride on a single charge?
The listing claims up to 60 miles in pedal-assist mode and around 40 miles on throttle alone, and reviewers reported real-world figures in the 40 to 60 mile range depending on terrain.
What happens if a part arrives defective?
Most reviewers who contacted the seller about a defective part, such as a throttle, received a replacement, though at least one reviewer reported no support for a unit with missing screws and a non-working motor.