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AMYET S8 dual-motor fat tire electric bike

DUAL-MOTOR FAT TIRE EBIKE

AMYET S8 Electric Bike — 3000W Dual-Motor Mini Monster

Our verdict: a compact, moped-style powerhouse with serious hill-climbing, long range and confident control on city streets and dirt trails.

4.7/5

2×1000W hub motors (3000W peak) push up to 33 mph and crush steep climbs with a smart dual/single-motor switch.
Huge 48V 25Ah (1200Wh) battery delivers up to 75+ miles of pedal-assist range for real car-replacement rides.
Quad-piston hydraulic brakes, dual suspension and 20×4″ fat tires keep the S8 planted and in control on mixed terrain.

Motor: 2×1000W (3000W peak)
Battery: 48V 25Ah • 1200Wh
Top Speed*: Up to 33 mph
Range*: Up to 75+ miles PAS

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High-power, dual-motor fat-tire e-bikes are everywhere right now, but not all of them are built the same. Some look wild on paper and then disappoint when you actually ride them. The AMYET S8 clearly wants to be in the first group: it comes with two 1000W hub motors (up to 3000W peak), a 1200Wh (48V 25Ah) battery, and a claimed top speed of 33 mph plus 75+ miles of range in pedal assist.

On top of that you get 20"×4" fat tires, full hydraulic suspension, quad-piston hydraulic disc brakes, turn signals, a bright headlight, and a surprisingly comfortable long bench seat. In other words, this is a compact moped-style e-bike designed to replace short car trips, handle dirt paths, and still feel playful around town.

But is the AMYET S8 actually a good buy? And more importantly, who is it really for?

Let’s walk through the bike in detail, section by section, from the perspective of someone who cares about real-world riding, not just spec sheets.

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Quick Verdict

The AMYET S8 is a compact, dual-motor fat-tire e-bike built for riders who want serious power and off-road capability in a fun, moped-style package.

If you want a light, traditional bicycle feel, this is not it. At roughly 95 lbs, it’s a solid, motorcycle-inspired machine with a long seat, high-rise bars, and the kind of acceleration that makes hills and loose terrain feel easy.

The combination of dual 1000W hub motors, 48V 25Ah battery, and hydraulic brakes/suspension gives it a level of performance and control that many budget fat-tire e-bikes simply can’t match. The flip side is that it’s heavy, overpowered for strict Class-2/Class-3 regulations in some areas, and not ideal if you constantly need to carry it upstairs.

Highlights

What the AMYET S8 does really well

Serious power on tap – Dual motors (up to 3000W peak) with a dual/single switch make it easy to choose between range and raw acceleration.
Big battery, long potential range – 1200Wh (48V 25Ah) pack, removable, with an estimated 75+ miles of range in pedal assist.
Confident braking & control – Quad-piston hydraulic disc brakes and 20"×4" fat tires inspire confidence at higher speeds.
Comfortable and versatile – Dual suspension and fat tires soak up bumps; long bench seat works well for relaxed cruising and mixed terrain.
Good safety & visibility package – 3000-lumen headlight, tail light with turn signals, and a clear LCD display (with USB-C charging) make it commuter-friendly.

Where it falls short

Heavy – At about 94.79 lbs, it’s not friendly for walk-ups, roof racks, or frequent lifting.
Overpowered for some regions – The 33 mph top speed and dual motors may not fit into Class-2/Class-3 rules without limiting settings; riders must check local laws.
Single frame size – Recommended for riders 5'5"–6'5"; shorter riders may find the seat height and reach a bit tall.
More moped than bicycle – You can pedal it thanks to the 7-speed drivetrain, but it really shines as a throttle-and-PAS machine rather than a pure bicycle.

If you want a compact, powerful, do-almost-anything e-moped for city streets, dirt paths, and light off-road use, the AMYET S8 is a compelling option. If you mainly want a lightweight, exercise-oriented e-bike, you’ll be happier with a more traditional hardtail or commuter model.

Key Specs at a Glance

Motor: Dual 1000W brushless hub motors (up to 3000W peak), dual/single motor switch
Battery: 48V 25Ah (1200Wh), removable, IP54 water-resistant, anti-theft lock
Claimed Range: 75+ miles per charge (PAS, ideal conditions)
Top Speed: Up to 33 mph (region and settings dependent)
Wheel/Tire Size: 20" × 4" puncture-resistant fat tires
Suspension: Dual suspension – front fork + rear shock
Brakes: Quad-piston hydraulic disc brakes
Drivetrain: 7-speed geared system
Display: 3.2" LCD, IP54, shows speed, battery, PAS level, and dual-motor status; USB-C charging port
Lighting: 3000-lumen headlight, tail light, turn signals
Bike Weight: ~94.79 lbs
Max Load: 330 lbs
Rider Height Range: 5'5"–6'5"
Frame Material: Heavy-duty steel frame (moped-style)
Assembly: 95% pre-assembled – install front wheel, handlebar, pedals, and saddle

With the basics covered, let’s dig into how all of this actually feels in use.

Design & Build Quality

Moped-Style Frame and Geometry

The AMYET S8 does not try to look like a standard mountain bike. It’s unapologetically moped-inspired, with a long, flat bench seat, high-rise handlebars, and a compact wheelbase.

Some key geometry notes taken from the brand’s own chart:

Total length: 71.34"
Wheelbase: 48.82"
Handlebar height: 48.41"
Seat height: 27.06"
Max load: 330 lbs

That short wheelbase and tall bar combo give the S8 a playful, upright riding stance. You sit a bit like you would on a small motorcycle, not hunched forward like on a traditional mountain bike. It’s easy on your back and shoulders, which is nice for commuting or leisurely weekend rides.

The frame itself is a sturdy steel structure, designed to handle the stresses of dual motors and higher speeds. The bike isn’t trying to be ultralight; it’s built to feel solid and confidence-inspiring, especially under heavier riders or when carrying extra gear.

Finish and Details

The green colorway with black and red accents helps the S8 stand out without becoming too loud. The battery sits centrally within the frame triangle, which looks purposeful and helps with balance. Full-coverage fenders front and rear match the frame and do a good job of controlling spray on wet roads.

Cabling is mostly routed cleanly along the frame, and the included kickstand is robust enough to support the nearly 95-pound weight of the bike. For a bike at this power level, that’s important—you don’t want a flimsy stand when you park.

Overall, the design language says: “small moto with pedals” rather than “big bicycle with a motor.” If that’s what you’re looking for, the S8 nails the aesthetic.

Motor System & Riding Performance

The defining feature of the AMYET S8 is its dual-motor setup.

Dual 1000W Motors with Smart Switching

AMYET equips the S8 with two 1000W brushless hub motors, one in the front wheel and one in the rear. Together they provide a combined nominal output of 2000W and up to 3000W of peak power.

On the handlebar, you get a dual/single motor switch:

Single-motor mode – One hub motor (typically the rear) runs on its own. This reduces power draw and can help extend your range on flatter roads.
Dual-motor mode – Both hubs engage for maximum torque and acceleration. This is what you’ll want for steep hills, loose surfaces, or quick launches from a stop.

This switchable setup is extremely useful. Many riders don’t need both motors all the time, and the ability to choose gives you a practical way to balance power vs. efficiency.

Speed and Acceleration

With both motors engaged, the S8 is quick. The brand claims a max speed of up to 33 mph, and while actual top speeds will depend on rider weight, terrain, and local settings, it’s safe to say this is much faster than a typical 20 mph Class-2 e-bike.

Acceleration from a stop is strong—even in throttle-only mode—making it easy to keep up with urban traffic or climb short, sharp inclines. The dual-motor layout also helps maintain traction on loose surfaces like gravel, sand, or snow, where a single rear hub can sometimes spin out.

Because of the power on tap, it’s important to:

Start in lower PAS levels until you’re used to the bike.
Gradually roll on the throttle rather than snapping it wide open.
Always wear a helmet and follow local laws regarding speed limits and e-bike classes.

Climbing Ability

AMYET advertises 35° climbing capability. Even if we treat that as an idealized number, the reality is that dual motors + a 48V system give the S8 serious hill-climbing performance. Riders in hilly cities and mountain towns will appreciate how it powers up grades that leave many budget e-bikes struggling.

Combine that with the 7-speed drivetrain, and you can choose an appropriate gear for pedaling along while the motors do most of the heavy lifting.

Battery, Range & Charging

48V 25Ah “MegaRange” Battery

The S8 uses a large 48V 25Ah battery, good for 1200Wh of energy. For context, many entry-level e-bikes use 48V 10–14Ah packs (480–672Wh), so this is almost double the capacity of a basic setup.

Key battery features:

Removable pack – You can charge it on or off the bike.
Anti-theft lock – The battery locks to the frame to deter casual theft.
IP54 water resistance – Protection against splashes and light rain.
Two ways of charging – On-bike and off-bike charging options.

Real-World Range Expectations

AMYET claims 75+ miles per charge in pedal-assist mode. That figure is usually based on:

A relatively light rider
Low PAS level
Flat terrain
No strong headwinds

In the real world, range always depends on how and where you ride. With a 1200Wh pack, a reasonable set of expectations might look like this:

Eco / Single motor, low PAS (Level 1–2): 50–75 miles for an average adult on mostly flat ground.
Mixed riding, PAS 2–3, occasional dual-motor use: 35–50 miles.
Heavy throttle use, dual-motor almost all the time, high PAS: 20–30+ miles.

The nice thing about having such a large battery is that even when you do ride aggressively, you still get decent range. For typical commuting and weekend rides, most riders will only need to charge every few days.

Charging Time

Charging times will vary depending on the charger included, but a pack of this size typically takes 6–10 hours from empty with a standard 2A–3A charger. Many people simply plug it in overnight.

Given the capacity, this feels like a fair trade: you’re getting car-replacement-level range in exchange for a bit more patience when charging.

Drivetrain, Brakes & Safety

7-Speed Drivetrain

The AMYET S8 includes a 7-speed rear drivetrain, giving you a range of gears for both casual pedaling and higher-speed cruising.

On a heavy, dual-motor e-moped like this, the gears mainly serve two roles:

Comfortable pedaling cadence at different speeds, especially in PAS modes.
Backup mobility if you ever run the battery lower than expected.

You probably won’t be out of the saddle sprinting on this bike, but it’s nice to have the gearing when you want to contribute some leg power or stretch your legs on longer rides.

Quad-Piston Hydraulic Disc Brakes

Powerful e-bikes demand powerful brakes, and this is one area where the S8 really delivers.

The bike uses quad-piston hydraulic disc brakes front and rear. Key benefits:

Shorter stopping distances – AMYET advertises emergency stops from 30 mph in about 2.3 seconds under ideal conditions.
Better modulation – You can finely control how much braking force you apply, instead of the all-or-nothing feel that some mechanical setups have.
Less hand fatigue – Hydraulics require less lever effort, which makes a difference during longer rides or frequent stop-and-go commuting.

There’s also automatic power-off protection: when you squeeze the brake levers, the motor assist cuts out instantly. That’s a must-have safety feature on high-power e-bikes and adds a layer of reassurance when riding in traffic or technical terrain.

Fat Tires and Traction

The 20" × 4" fat tires are puncture-resistant and designed for mixed terrain:

Sand and snow
Gravel paths
Broken pavement and potholes
Urban streets with occasional off-road detours

Combined with the dual motors, the tires give the S8 a planted, confident feel. You can air them down slightly for off-road grip or keep them firmer for efficient commuting.

Comfort, Suspension & Ride Feel

Dual Suspension Setup

Comfort is one of the S8’s strong points.

You get dual suspension—a suspension fork up front and a rear shock under the seat—designed to absorb around 90% of typical terrain impacts.

What that means in practice:

City riding: It smooths out potholes, speed bumps, and cracked asphalt, which would feel harsh on a rigid frame.
Off-road trails: It takes the sting out of roots, small drops, and rocky sections, especially when combined with the fat tires.
Long rides: Less vibration makes it easier on your hands, back, and shoulders.

The suspension is tuned more for comfort and control than for aggressive downhill mountain biking, which is exactly what most buyers of this bike will want.

Seat and Riding Position

The long bench seat is designed with ergonomics in mind. It’s wide enough to distribute pressure, and the cushioning is aimed at comfort over extended rides.

The seat height of 27.06" works well for riders in the recommended 5'5"–6'5" range.
It gives you a semi-bent knee position while still allowing easy foot-down stops.
The long design also means you can slide forward or backward to adjust your posture.

In many regions, riding with a passenger may have legal restrictions, but from a physical standpoint the bench seat and 330 lb load rating do make it possible to carry a small passenger or extra gear—always within local law and safety norms.

The adjustable handlebars and seat allow some fine-tuning of reach and height, although, as with most moped-style frames, there are limits. Riders under 5'5" or over 6'5" may find the fit less ideal.

Smart Features & Display

3.2" LCD Display

Front and center on the cockpit is a 3.2" LCD screen that’s:

IP54 water-resistant – Ready for light rain or road spray.
Easy to read in daylight, showing:
- Speed
- Battery level
- PAS level
- Odometer/trip distance
- Dual-motor status indicators

The display layout is straightforward, so you can quickly check your speed or remaining battery without taking your eyes off the road for too long.

A nice bonus is the USB-C charging port, which lets you top up a phone, GPS, or action camera on the go. With a 1200Wh battery on board, using a bit for devices is no problem.

Lighting & Visibility

The S8 comes well-equipped for low-light and night riding:

Headlight: A powerful 3000-lumen headlight mounted at the front. It’s bright enough not only to be seen, but to genuinely light up the road ahead in dark conditions.
Tail light & brake light: Keeps you visible from behind and signals when you’re slowing down.
Turn signals: Integrated indicators are an excellent upgrade for urban riding, making your intentions clearer to drivers and other cyclists.

These features, combined with the e-bike’s stability and braking performance, make it a solid choice for commuting even after sunset.

Assembly, Maintenance & Everyday Practicality

Out-of-the-Box Setup

The AMYET S8 arrives 95% pre-assembled. In the box you’ll find:

The electric bike itself
Charger
Kickstand (often pre-installed)
Tool kit
Manual

Typical remaining tasks include:

Installing the front wheel with the quick-release mechanism.
Mounting and tightening the handlebar.
Installing the saddle and pedals.
Checking tire pressure and brake alignment.

Most riders with basic mechanical confidence can complete the process in under an hour. The included tools are usually sufficient, though having your own torque wrench or Allen key set never hurts.

If you’re unsure, a quick once-over by a local bike shop can give peace of mind, especially considering the bike’s speed and weight.

Day-to-Day Use

Once built, what’s it like to live with?

Weight & storage: At ~95 lbs, you probably won’t want to carry it up multiple flights of stairs on a daily basis. Ground-level storage, a garage, or a bike room is ideal.
Locking & theft deterrence: The removable, locking battery and beefy frame design help, but you’ll still want a quality U-lock or chain if you park it in public regularly.
Weather: IP54-rated electronics mean drizzle and road spray are fine, but—as with any e-bike—you should avoid high-pressure hosing and long-term exposure to deep puddles.
Maintenance: Fat-tire, dual-motor bikes need the same basics as any e-bike:
- Regular tire pressure checks
- Chain lubrication
- Brake pad inspection
- Occasional spoke tension checks, especially after rough off-road use

The motors are brushless and largely maintenance-free under normal use.

Who Is the AMYET S8 Best For?

The AMYET S8 will appeal most to riders who:

Want a powerful, moped-style e-bike rather than a lightweight pedal bike.
Ride in hilly areas, on mixed terrain, or in places with gravel roads, sand, or snow.
Prefer an upright, relaxed riding position with a long, comfortable seat.
Value strong acceleration and high cruising speeds for keeping up with traffic.
Need a bike that can support heavier riders or extra cargo, thanks to the 330 lb load rating.
Want good night-riding capability with integrated lighting and signals.

It’s also a compelling option for car-light or car-free households. With its big battery, high speed, and comfortable setup, the S8 can realistically replace many short car trips.

Things to Consider Before You Buy

No bike is perfect. Here are a few points to think about before pulling the trigger.

1. Legal Classification and Local Regulations

Because of its:

Dual 1000W motors
33 mph top speed

…the AMYET S8 may exceed standard Class-2/3 e-bike limits in some regions unless configured to lower speeds. In many areas, e-bikes are capped at 750W and 20–28 mph depending on the class.

Before riding on public roads or paths, check:

Local e-bike laws and classifications
Whether you need to limit the top speed via settings
If helmets or other equipment are legally required (they’re always a good idea regardless)

Treat the S8 with the same respect you would give a small motorcycle.

2. Weight and Portability

The nearly 95-lb weight is the trade-off for the dual motors and large battery. That means:

Carrying it upstairs regularly will get old fast.
Lifting it onto a car rack requires strength and care.
Manoeuvring in tight hallways can be tricky.

If you live in a walk-up apartment with no secure ground-floor storage, think carefully about how often you’ll need to move it by hand.

3. Single Frame Size

The recommended height range of 5'5"–6'5" covers many adults, but:

Riders shorter than 5'5" may have trouble getting a comfortable reach and safe standover.
Riders much taller than 6'5" may feel cramped.

If you’re near the edges of that range, it’s worth measuring your inseam and comparing with the 27.06" seat height and overall geometry.

4. Pedaling Feel

You can pedal the AMYET S8, and the 7-speed drivetrain helps, but:

The weight and fat tires mean it’s not something you’ll want to pedal far with no assist.
It’s best thought of as a power-assisted moped where pedaling complements the motors, rather than a fitness-first bicycle.

If your primary goal is exercise and long, human-powered rides, a lighter hardtail or fitness e-bike might suit you better.

Environmental Angle: EPA-Compliant Eco Ride

One interesting detail from AMYET’s description is that the S8 is marketed as an EPA-compliant eco ride, with independent testing estimating around 2.1 tons of CO₂ reduction per year compared with using a gas bike or small motorcycle for roughly 10,000 miles of riding.

Of course, this is a marketing figure based on assumptions, but the broader point stands: replacing short car or gas-bike trips with an e-bike like the S8 can significantly shrink your personal emissions while also saving money on fuel.

With its long range and robust build, the S8 is actually realistic as a daily transportation tool, not just a weekend toy—so those potential savings are more than theoretical.

Final Thoughts: Is the AMYET S8 Worth It?

The AMYET S8 is a serious dual-motor fat-tire e-bike that combines:

Big-power performance
Long-range battery capacity
Strong hydraulic braking
Comfortable dual suspension
Practical features like turn signals, bright lighting, and a clear display

It’s aimed squarely at riders who want a compact, moped-style machine that can handle city streets, hills, and rougher paths with ease, and who are comfortable managing a 95-pound, high-power e-bike.

You should choose the AMYET S8 if:

You want thrilling acceleration and climbing ability.
You value range and power over lightweight portability.
You plan to use the bike as a car alternative for commuting, errands, and weekend exploring.

You might want to look elsewhere if:

You need a bike that’s easy to carry upstairs or lift frequently.
Strict local regulations limit motor power and speed and you don’t want to adjust settings.
You’re seeking a more traditional, pedal-centric cycling experience.

For the right rider, though, the AMYET S8 is a compelling package: a dual-motor mini monster that’s also surprisingly comfortable, practical, and ready to make everyday rides a lot more exciting.

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