TST R004 Fat Tire Electric Bike with App Control
- Maximum Weight Recommendation: 460 pounds
- Wheel Size: 20 inches
- Wattage: 750 watts
- Electric Assist Type: hub motor, pedal assist
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
The app control, lighting package, and UL 2849 certification make this a well-rounded fat tire ebike, though a defective unit can mean a long wait for resolution.
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ASIN: B0GJ5KLQ6JModel: R004Category: Electric Bicycles
More from this brandAll TS TST GRP LLC electric bicyclesColors Available
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Overview
A second TST R004 configuration, this fat tire ebike pairs the same 1500W peak motor and 48V 15Ah removable battery with app control for remote locking and ride tracking, plus a 60 to 80 mile claimed range per charge.
The app layer is the differentiator here: TST's software lets a rider check speed, battery, and distance from a phone, set speed limits, and lock the bike remotely, on top of the built-in LCD display. It carries an SGS-tested UL 2849 safety certification for the battery and charger, and TST backs it with a 180-day warranty and stated 24/7 customer support. A headlight and turn signals come standard, a detail more than one reviewer called out as a step up from other ebikes at this price.
- 1500W peak motor, 60 to 80 mile claimed range
- App control for remote lock and ride stats
- SGS-tested UL 2849 certified electrical system
- 180-day warranty with stated 24/7 customer support
Who it's for
It suits a rider who wants phone-based control and security features alongside standard ebike performance, including someone replacing a non-street-legal gas minibike with something they can ride around a city legally. It is not the right pick for a buyer who has been burned by a slow-responding seller before, since one reviewer describes a months-long wait for a refund after a defective front rotor.
Pros and cons
- App control adds remote locking and ride tracking
- Headlight and turn signals included for road visibility
- SGS-tested UL 2849 certified battery and charger
- Assembly is more involved than average for beginners
- Minor cosmetic scratches reported on kickstand and pedals
- A defective front rotor took weeks to resolve
Performance notes
The same 1500W peak motor drives a claimed 60 to 80 mile range per charge, longer than the standard R004 spec sheet, tracked through the LCD display or the companion app. Turn signals and a headlight add visibility that a bare fat tire ebike often lacks, and one buyer with nearly 100 miles logged reported the battery and motor holding up without issue. Build quality varies by unit: one reviewer called assembly complicated for a beginner, while others found it straightforward.
Specifications
| Brand | TS TST GRP LLC |
|---|---|
| Model | R004 |
| Dimensions & fit | |
| Maximum Weight Recommendation | 460 poundshigher than 97% of 266 electric bicycles |
| Wheel Size | 20 inches |
| Wheel Width | 4 inches |
| Capacity & performance | |
| Number Of Speeds | 7 |
| Age Range Description | Adult |
| Power & efficiency | |
| Wattage | 750 watts |
| Power Source | Battery |
| Construction & materials | |
| Wheel Material | Alloy Steel |
| Color | Jet Black |
| Warranty & support | |
| Warranty Type | Limited |
| Other details | |
| Electric Assist Type | hub motor, pedal assist |
| Brake Style | Disc |
| Suspension Type | Dual |
| Is Assembly Required | Yes |
| Model Year | 2026 |
| Style Name | Retro |
| Theme | Sport |
| Subject Character | Sport |
| Specific Uses For Product | Dirt Biking, Freestyle, Gravel, Jumping, Racing, Road, Snow, Trail |
Closest rivals on specs
Frequently asked questions
Does the TST R004 have an app?
Yes, it syncs to a companion app for ride stats, pedal-assist customization, speed limits, and remote locking, alongside the built-in LCD display.
What if a TST R004 arrives defective?
TST offers a 180-day warranty and 24/7 support, though one reviewer described weeks of back and forth over a defective front rotor before it was resolved.