TST
Amazon's #1 best-selling bicycle. 457 ratings, and one spec that can't be true.
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Six axes, the same rule for every bike. This is our judgment, not the manufacturer's.
| Range | 6/10 | |
|---|---|---|
| Push | 7/10 | |
| Comfort | 7/10 | |
| Sportiness | 5/10 | |
| Ease of use | 5/10 | |
| Value | 9/10 |
Pick a spot and see the area each bike reaches along real roads — not a circle on a map.
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Reachable area estimated over the road network. Real range varies with assist level, terrain, rider weight and wind.
This is not the best-selling electric bike on Amazon.com. It is the best-selling bicycle, full stop — electric or otherwise. Eight of the ten top sellers in that category are now electric, and this one sits at the top. With 457 ratings at 4.2, it has a real ownership record behind the badge.
It is the base model from the same maker as the TST R7 already on this site — same 48V 15Ah battery, same 750 W nominal motor with a 1,500 W peak, same 20×4.0 tires, same dual suspension and 450 lb payload — without the passenger seat and $130 cheaper. For most buyers that is the better deal.
Now the part that is the reason this site exists. The bullet points say the battery is 48V 15Ah. Multiply those and you get 720 watt-hours. The spec table, on the same page, says 1,200 watt-hours. Both numbers cannot be true. Since 48 × 15 is arithmetic and 1,200 is a typed-in field, we use 720 — and we mention it because a buyer comparing this to a bike honestly listed at 720 Wh would think this one has two-thirds more battery. It doesn't.
Two more things the sheet tells you that the bullets don't. The frame material is listed as iron — the R7 from the same maker says aluminium — which would explain why TST publishes no weight at all for this bike. And the brakes are linear-pull rim brakes, not discs. On an 80-plus-pound fat-tire bike rated for 450 lb, rim brakes are the one spec we would want upgraded before anything else.
What the reviews say is more reassuring than the spec sheet. Buyers consistently describe it as arriving well packed and mostly assembled, climbing better than expected, and — repeatedly — costing about $100 less on Amazon than on TST's own site. One owner who bought two makes the point that several one-star reviews complain about things that would make it a motor vehicle: it's a bike with pedal assist, and it rides like one.
Anything marked «—» is a figure the manufacturer doesn't publish. We don't fill those in by eye.
| Type of riding | Fat tire |
|---|---|
| Class (US law) | Not stated. 750 W nominal with a throttle is Class 2 territory if the top speed is capped at 20 mph, but TST doesn't publish the top speed |
| Wheel size | 20" |
| Tire width | 4" |
| Frame material | Iron, per the spec table |
| Frame size | One size |
| Motor position | Rear hub |
|---|---|
| Motor | Brushless rear hub |
| Nominal power | 750 W |
| Peak power | 1.500 W |
| Torque | — |
| Top speed | — |
| Throttle | Yes |
| Battery | 720 Wh |
|---|---|
| Claimed range | 60 miles |
| Charge time | 7 h |
| Removable battery | Yes |
| Gears | 7 |
|---|---|
| Drivetrain | 7-speed derailleur, twist-grip shifter |
| Brakes | Linear-pull rim brakes, per the spec table |
| Suspension | Dual, front and rear |
| Bike weight | — |
|---|---|
| Max total weight | 450 lb |
| Assembly required | Yes |
| Warranty | 6 months |
| Amazon's #1 best-selling bicycle | Not #1 in e-bikes — #1 in the entire Bicycles category on Amazon.com, electric or not, as of our last check. That badge is Amazon's, and it is the only real sales figure the site publishes |
|---|---|
| The battery contradiction | The bullets say 48V 15Ah, which is 720 Wh. The spec table says 1,200 watt-hours. Those cannot both be true, and 720 is the one the arithmetic supports, so 720 is what we use |
| Iron frame | The spec table says the frame is iron. The R7 from the same maker says aluminium. Either the listing is wrong or the two bikes are built differently; at this price, iron is plausible and it explains why no weight is published |
| Brakes | The spec table says linear-pull — rim brakes, not discs. On a fat-tire e-bike with a 450 lb payload that is the weakest spec on the sheet |
| Two model numbers | The model field says R004 and the style field says R002. Same listing, two names |
| Range | Up to 60 miles in pedal-assist mode, per TST. Expect well under half that on throttle alone |
| Assembly | Ships 90% assembled; buyers describe the packaging as heavy and well protected |
A summary of the reviews published on Amazon.com as of 2026-08-22.
4.2 out of 5 from 457 ratings. The recurring themes are value and packaging: it arrives heavy, well protected and nearly built, and several buyers note Amazon's price undercuts the manufacturer's own site by about $100. Hill climbing and the Shimano gearing get singled out. One owner of two units observes that the low ratings tend to complain about it not being a motorcycle, which is a fair reading of what it is.
Reviews and prices change. Check before you decide.
See reviews and price on AmazonAdd two or more bikes to the comparison and you'll see their spec tables and charts side by side.
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