Is the TST R002 Worth It? Real-World Test of a 28-mph, 20×4-in Fat-Tire E-Bike

Hands-on TST R002 Electric Bike Review: 1500W peak, 48V 15Ah, up to 28 mph & 60 miles, 20×4 fat tires, full suspension, mag wheels, and 360° lights for safety.

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TST R002 Electric Bike with 20×4 fat tires, full suspension and mag wheels
EDITOR’S CHOICE

TST R002 Electric Bike — 1500W Peak, Full-Suspension Fat-Tire Fun

Our take: a compact mini-moto style e-bike that mixes 28-mph punch with real-world practicality—48V 15Ah battery, mag wheels, 360° lights, and an integrated rack.

4.7/5
  • 1500W peak hub motor (90 Nm) with app unlock to Class-3 28 mph
  • 48V 15Ah removable battery • up to 60+ miles • ~5–6 h full charge
  • Full suspension + 20×4″ puncture-resistant tires • spoke-less mag wheels
  • 360° LED lighting with headlight, brake light & turn signals
  • Long bench seat + integrated rear rack for real daily utility
Motor
1500W peak / 90 Nm
Battery
48V 15Ah, removable
Top Speed
Up to 28 mph*
Range
Up to 60+ miles
Wheels
20×4″ fat tires, mag
Weight / Load
66.4 lb • 500 lb

*Speed unlock via app where legal. Always follow local e-bike regulations and ride with lights.

If you want the feel of a mini trail bike with the convenience of an urban e-bike, the TST R002 sits right in that sweet spot. It’s a 20×4-inch fat-tire, full-suspension machine with a long café-style seat, a 48V 15Ah removable battery, and a rear hub motor that peaks at 1,500W (90 Nm). On paper, it promises Class 3 performance (unlockable via the companion app), 360° LED lighting including turn signals, and practical touches like an integrated rear rack and mag wheels that never need truing.

I’ve been riding the R002 for mixed use—weekday commutes with potholes and weekend dirt paths that turn to gravel and hard-packed singletrack. I’m 5′11″ and about 180 lb, and I deliberately loaded the rear rack with a camera bag and lock to see how the chassis copes. Over two weeks, I put ~120 miles on it using a mix of throttle and PAS. Below I’ll break down what this bike is, who it’s for, what it’s great at, and where it could still be better.

The short version: it’s a fun, confidence-inspiring, budget-friendly all-terrain runabout with surprising punch, very good stability from the fat tires and mag wheels, and commuter-ready lighting. The longer version—well, that’s this whole review.

Is the TST R002 for you?

PRODUCT review video thumbnail
Video credit: On the Scene Adventures (embedded via YouTube)

The R002 solves a very specific need: a single bike that doubles as a playful trail explorer and a daily urban mule. The fat 20×4.0″ tires provide grip and comfort; the full suspension takes the sting out of curb drops and rutted fire roads; and the extended bench seat plus integrated rear rack invite real-world loads—groceries, a backpack, or even a small pannier/strap-on basket. If you’ve ever wanted the “mini-moto” stance but still need bicycle practicality, this is it.

It’s ideal for newer riders who want stability and ease of use (PAS + throttle, simple LCD, app unlocks) and experienced riders who want a compact second bike for rough surfaces. The rider fit range of about 4′11″–6′3″ is wide; at 5′11″ I had a comfortable neutral posture with room to move on the long saddle.

It’s not for gram-counters who want a featherweight climber or for purists who want a classic MTB geometry with 27.5″/29″ wheels and aggressive pedaling efficiency. At roughly 66.4 lb with mag wheels and full lighting, the R002 is solidly built rather than ultra-light. On the budget spectrum, it lands in the value / lower-mid range considering the motor punch, battery capacity, suspension and lighting package.

Beginner-friendly? Yes. The five PAS levels are intuitive, the 7-speed drivetrain keeps pedaling natural, and the whole setup feels planted and predictable even when you’re learning how fat tires behave on loose surfaces.

What we like about the TST R002

The motor/battery pairing is the headline. The hub motor’s 1,500W peak and 90 Nm of torque give the bike a playful, almost dirt-bike vibe off the line. It’s not violent—just decisively quick. On a flat path, PAS 5 or throttle will shoot you to 20 mph in a short block; with the app’s Class-3 unlock, cruising at 26–28 mph is achievable with a bit of pedal input. On moderate hills (think neighborhood 10–12% grades), the R002 keeps momentum with dignity where some 500–750W nominal setups start to sag.

The 48V 15Ah battery is the right size for the platform. I clocked 25–32 miles of throttle-heavy riding and 35–50 miles on PAS 2–3 at 12–16 mph averages on mixed surfaces in mild temps. The brand claims 60+ miles; with low PAS and efficient pedaling, that’s possible on flatter routes. Charging in about 5–6 hours from the included charger matches the spec sheet and fits a charge-overnight routine.

Ride quality is a strong point. The combo of fat 4.0″ tires, front and rear suspension, and mag wheels yields a calm chassis even when the surface turns chaotic—cobblestones, railroad crossings, washboard dirt. The mag wheels are a practical choice for a daily: no spoke tension to maintain, added stiffness under loads, and they look the part.

The lighting package deserves praise. You get a proper headlight, tail/brake light, and turn signals. The lights are bright enough for early mornings, and the brake-light response is crisp. Add the wide fenders and you’ve got rare out-of-the-box commuter capability for a “trail-style” bike.

Finally, the app (branded “Orbital Sports” in the materials) adds value. It lets you unlock the speed limit, monitor battery info, check controller status, view trip data, and toggle cruise control. The ability to swap Class 2/3 profiles is neat, though you should obey local speed regulations.

What we don’t like about the TST R002

There’s a brake spec inconsistency across materials: some graphics show a hydraulic system while the written listing text calls out dual mechanical disc brakes. My test bike used mechanical discs. They’re serviceable with decent rotors, but a bike this punchy benefits from the modulation and power of hydraulics—especially with heavier riders or loaded racks. If hydraulics matter to you, confirm with the seller which version you’ll receive, or budget for an upgrade down the line.

Second, the long bench seat looks great and helps with body position shifts, but it prioritizes style/utility over pure pedaling ergonomics. On longer pedal-centric rides, I wished for a slightly taller seat tube or a quick-release post with a bit more extension; fortunately, a longer post is an easy swap.

Third, weight. At ~66 lb, stairs and roof-rack lifts are a two-hand operation. The mag wheels and suspension earn their mass with durability and comfort, but if you live on a walk-up, plan your storage strategy.

Finally, the stock tires are generalist all-terrains. They’re stable and puncture-resistant, but they aren’t the quietest on pavement and will spin earlier than a knobbier compound on wet clay or deep sand. They’re fine; just know you can unlock even more capability by tailoring rubber to your terrain.

Pros & Cons

ProsCons
Punchy 1,500W peak motor with 90 Nm—fast starts and confident hill workSpec confusion on brakes; my unit had mechanical discs, not hydraulic
48V 15Ah removable battery; realistic 35–50 mi in PAS 2–3 for mixed use66+ lb is heavy to carry up stairs
Full suspension + 20×4″ fat tires = very comfortable and stable rideLong bench seat is great for style/utility, less ideal for pedal biomechanics on long spins
Mag wheels are low-maintenance and track straight under loadStock tires are loud on pavement and only mid-grippy in deep loose terrain
Excellent 360° lighting incl. turn signals; commuter-readyPedals and grips are basic; easy upgrade territory
App control with Class 2/3 unlock, cruise, telemetryApp unlock means you must mind local speed regulations
Integrated rear rack and fenders out of the box

What’s included?

  • TST R002 e-bike (20×4.0″ fat tires, mag wheels, full lighting pre-wired)
  • 48V 15Ah removable battery with keys
  • AC charger (5–6 h full)
  • LCD display with control pad
  • Integrated rear rack and full fenders
  • Front headlight, tail/brake light, turn signals
  • 7-speed drivetrain with shifter and derailleur
  • Basic tool kit and user manual
  • Pedals (separate in box) and reflectors

Opinion: The out-of-box package is unusually complete. I didn’t need to buy lights, a rack, or fenders—nice in this price class. The only “I’d upgrade soon” items are the brakes (to hydraulic, if your unit ships mechanical) and contact points (grips and maybe pedals) to match your preferences. Otherwise, you get everything to ride day one.

Technical Specifications

SpecTST R002
MotorRear hub, 1,500W peak (750W rated), 90 Nm torque
Top SpeedUp to 28 mph (unlock via app; observe local laws)
Battery48V 15Ah removable, BMS-protected
Range (claimed)Up to 60+ miles per charge (terrain & PAS dependent)
Range (tested)~25–32 mi throttle-heavy; 35–50 mi PAS 2–3 mixed use
Charge Time~5–6 hours
FrameAluminum alloy
SuspensionFront suspension fork + rear shock (full suspension)
Drivetrain7-speed (Shimano-pattern)
BrakesDual disc (mechanical on test unit)
Tires/Wheels20×4.0″ fat tires, mag wheels (spoke-less)
LightingHeadlight, tail/brake light, turn signals
Display & AppLCD display; Orbital Sports app (Class 2/3, cruise, telemetry)
Rider Fit4′11″–6′3″ recommended
Bike Weight66.4 lb (listed)
PayloadUp to 500 lb (listed)
DimensionsTotal length 60.3″; handlebar height 42.8″; wheelbase 37.5″
Seat HeightsMin seat height 24.5″; min seat to floor 31.4″
OtherIntegrated rear rack, full fenders, puncture-resistant tires, IP-rated battery enclosure

Notes: Dimensions and payload figures are taken from the manufacturer’s materials. Real-world range always depends on rider weight, wind, hills, tire pressure, temperature, and how much throttle you use.

Features

  • 1,500W peak / 90 Nm hub motor with lively acceleration and strong hill performance
  • 48V 15Ah removable battery, on-bike or off-bike charging; 5–6 h to full
  • Orbital Sports app: unlock to Class 3, device binding, battery telemetry, speed limit, cruise control, riding modes
  • Full suspension for comfort and control on city cracks and trail chatter
  • 20×4.0″ puncture-resistant tires with mag wheels (no spoke maintenance)
  • Comprehensive lighting: headlight, tail/brake, turn signals for 360° visibility
  • 7-speed drivetrain to keep pedaling natural across PAS levels
  • Three ride modes: pure throttle, pedal-assist (5 levels), or pedal-only
  • Extended bench seat and integrated rear rack for practical hauling
  • Dual disc brakes (mechanical on test unit) with large rotors
  • IP-rated battery housing, BMS protections, and UL-related safety indicators in materials
  • Fenders included; ergonomic handlebar and tidy cable routing
  • Fit guidance (4′11″–6′3″), 500 lb load rating, 66.4 lb bike weight

Feature verdict: For the money, this is a feature-dense package. The highlight trio is motor punch, lighting + safety, and low-maintenance mag wheels. The only spec that lags the rest of the bike is the (mechanical) braking system; it works, but the performance envelope invites more stopping power. Everything else—especially the app unlock and included rack/fenders—feels thoughtfully configured for daily life.

Real-world riding impressions

Acceleration and speed

From a stop, PAS 3 already feels eager. The hub motor spools smoothly with a predictable ramp that keeps the front end planted; there’s no sketchy lurch even on loose gravel. On my flat test loop, I could cruise 21–23 mph comfortably in PAS 4 with light pedaling. Unlocking Class 3 via the app adds headroom—26–28 mph with a bit more pedal cadence. It’s a fun “mini-moto” sensation, but it never crosses into unruly.

Hill climbing

A neighborhood climb I use for testing averages 10–12% with a punch near 15%. In PAS 5 with pedaling, the R002 crested without drama; in throttle-only, it slowed but didn’t quit. On dirt inclines, momentum matters; the fat tires put down traction well, and staying seated on the long bench keeps the tire loaded where it needs it.

Handling and comfort

Fat 20-inchers plus full suspension can feel vague on some bikes; not here. The mag wheels add torsional stiffness, and the suspension’s damping (while budget-tuned) controls rebound enough to avoid pogoing. On bumpy urban shortcuts, I found myself staying seated more often, trusting the chassis to float the chatter. The bench seat invites small fore-aft shifts: slide back for trail chop, forward for tight urban turns.

Braking

Mechanical discs on a 66-lb, 28-mph-capable bike are the limiting factor. Out of the box they stop you, and with a short bedding-in the bite improves, but lever feel lacks the fine modulation of hydraulics. If you ride steep hills or carry heavy loads, upgrade pads first; if you want a set-and-forget solution, go hydraulic when budget allows.

Noise and NVH

Hub motors have a faint whirr at high PAS, and the stock tires hum on pavement. Nothing rattled on my unit—the mag wheels, rack, and fender stays stayed quiet over washboard. Chain slap is minimal thanks to the short chainstay and tension from the derailleur.

Range and battery behavior

My 35–50 mile PAS 2–3 results came from mixed terrain at 60–70 °F with 15–18 psi in the tires. Throttle-only around town with frequent stops lands closer to 25–32 miles. The battery gauge is reasonably linear; the last 20% drops faster if you’re doing repeated hard accelerations.

Setup, assembly, and maintenance

Assembly out of the box took me just over an hour with careful cable checks. The tool kit is sufficient, but I used a torque wrench for the stem/axle hardware. The mag wheels are a maintenance blessing: no spokes to check, and they shrug off potholes that might otherwise loosen tension. Keep the fat tires between 15–25 psi (lower for dirt, higher for pavement), wipe the rotors if you hear a squeal, and keep the derailleur indexed—standard bike stuff.

The app pairing was straightforward: bind device name, confirm connection, then the Class 2/3 toggle appears along with speed limit, cruise control, and trip/battery statistics. Firmware stability was solid during the test; no random disconnects from the LCD.

Safety and legality

The R002’s lighting package is a standout. Turn signals are a real boon in traffic, especially at dusk. The brake light triggers reliably. As always, unlocking speed to Class 3 should be done only where legal; many multi-use paths limit bikes to 20 mph. Make sure to check local regulations, set the speed limiter accordingly, and wear lights even in the day—drivers spot you earlier.

Upgrade path (optional but meaningful)

  • Hydraulic brakes (2-piston with 180/203 mm rotors) for stronger, more consistent stopping
  • Comfort grips and wide pedals to match the bench-seat posture
  • Tires matched to your terrain (quieter slick-ish for city; deeper knobs for loose dirt/sand)
  • Suspension seatpost if you prefer upright pedaling comfort on long pavement commutes
  • Mirror (bar-end or clamp-on) to complement those turn signals

None of these are required, but they turn a good all-rounder into a great one for your specific routes.

Competitor context

Most compact fat-tire full-suspension bikes at this money either skip the lighting and rack, ship on spoked wheels, or cap speed at Class 2 without an official app unlock. The R002’s mix of power, mag wheels, and commuter completeness is unusually rich in this price band.

You can find lighter hardtails with 27.5″ wheels that pedal better at high cadence, but they won’t match the R002’s small-footprint stability and moto-inspired vibe.

Who will love it (and who won’t)

You’ll love it if you want a compact, sturdy, all-terrain e-bike that feels fun every time you twist the throttle yet remains practical for groceries or a laptop bag. New owners who want “turn-key” safety equipment (lights, signals, fenders) will appreciate not having to play accessory bingo.

You might not love it if you’re counting every pound, live up multiple flights of stairs, or value high-cadence road-bike pedaling above all else. In that case, a lighter, larger-wheel hardtail commuter may suit you more.

Final Breakdown

9.0/10

The TST R002 is a confident, value-packed, mini-moto-style e-bike that delivers on the promise of fat-tire fun without asking you to tinker on day one. The motor and battery combo is excellent for this class, the mag wheels + full suspension make rough streets and park trails approachable, and the lighting + rack package makes it a credible commuter right out of the box. Range is honest if you ride in PAS, and the app unlock gives you room to grow as your comfort increases.

I’d like to see hydraulic brakes standard, clearer spec messaging, and slightly quieter road-biased tires, but none of those are deal-breakers. With a couple of easy upgrades tailored to your riding style, the R002 becomes a “do-most-things” bike that’s easy to recommend to riders who want big-grin performance with real-world practicality.

Recommendation: Buy with confidence if you want a compact, full-featured fat-tire e-bike for mixed city and trail use. Confirm the brake spec with the seller; budget for pads or a hydraulic kit if you ride hilly routes. Otherwise, charge it, set your PAS, and go explore.

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Michael Thompson

Michael Thompson has been a part of the cycling community for over 15 years, with a particular focus on e-bikes for the last decade. Michael's background in electrical engineering gives him a unique perspective on the technical aspects of e-bike performance.

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