When it comes to the intersection of power, versatility, and style in the electric bike market, the Euy S4 Moped Style E-Bike stands out as a serious contender. Launched to address the demands of urban commuters, adventure seekers, and anyone in between, the S4 is not your run-of-the-mill e-bike. It’s equipped with a muscular 2000W peak brushless motor, a robust 48V 25Ah battery, and a design that clearly takes inspiration from classic mopeds—resulting in a ride that feels both nostalgic and cutting-edge.
The Euy brand has steadily built a reputation for delivering well-engineered e-bikes with thoughtful features and excellent reliability. The S4 continues this tradition, boasting modern touches like hydraulic disc brakes, a multi-function LCD display, and all-terrain fat tires. Whether you’re weaving through city streets or conquering steep trails, this bike promises to deliver exhilarating performance, safety, and long-range freedom.
While the S4 is relatively new to the market, it has already garnered attention for its rugged build and impressive specs. The current model comes packed with upgraded safety features, increased durability, and rider-first ergonomics that make it suitable for a broad range of users.
Is the Euy S4 for You?
The Euy S4 solves the primary need for a powerful, all-terrain electric bike that can handle daily commutes, weekend adventures, and everything in between. If you’re looking for a bike that blends muscle with moped styling and a comfortable, upright riding position, the S4 is a compelling choice.
This bike is best suited for adult riders—whether you’re an urban commuter who wants to cut through city traffic, a weekend explorer seeking adventure on trails and hills, or even a delivery rider who needs consistent power and long range. The S4’s maximum load capacity of 400 lbs and recommended rider height of 5.7–7.7 ft make it adaptable for a variety of body types.
It’s not the ideal choice if you’re looking for a lightweight, ultra-portable e-bike, or if you need a minimalist city bike for carrying up several flights of stairs. The S4 is on the heavier side at 70 lbs, and its moped-style frame is built more for comfort and power than nimbleness. Budget-wise, the S4 sits in the mid-range for high-powered e-bikes—it’s not a budget buy, but it’s competitively priced for what you get.
As for beginners: if you are new to e-bikes but want something future-proof that you won’t outgrow, the S4 is approachable, especially thanks to its intuitive controls and stability. However, complete e-bike novices may need a little time to get comfortable with the weight and acceleration.
What We Like About the Euy S4
What really sets the S4 apart is its combination of power, versatility, and thoughtful design. The 2000W peak motor provides a real sense of confidence, whether you’re accelerating from a stoplight or attacking a 40° hill. Unlike many e-bikes that struggle off-road, the S4’s 20″x4.0″ fat tires and dual suspension soak up bumps, sand, and even snow, making for a genuinely smooth and stable ride in diverse conditions.
Battery life is another standout. With a 48V 25Ah (1200Wh) battery, real-world range can exceed 60 miles per charge with pedal assist, which is more than enough for most commutes or day-long excursions. The removable battery is a practical touch, allowing for easy charging at home or the office.
Safety features are first-rate. The hydraulic disc brakes inspire confidence even on descents, while the bright LED headlight and taillight make nighttime riding much safer. The digital S830 display is both readable and packed with useful info, from real-time speed to fault code diagnostics. The adjustable seat and handlebars also mean riders of all sizes can dial in their fit for maximum comfort.
What We Don’t Like About the Euy S4
No product is perfect, and the S4 does have some drawbacks to consider. First, at 70 lbs, it’s not easy to carry or transport if you have to lift it regularly—something to keep in mind if you live in a walk-up apartment or need to store the bike indoors.
Next, the moped styling, while attractive to many, makes the S4 bulkier than standard bikes, so parking and maneuvering in tight spaces can be a challenge. While the high-capacity battery is a strong point, it also contributes to the bike’s overall weight.
The S4 does not come with a built-in rear rack extension, which may be a consideration for those planning to use it for cargo or deliveries—though the included rear rack is sturdy enough for most needs. Additionally, while the S4 is advertised as beginner-friendly, new riders will want to take it slow at first, as the motor’s power and the bike’s weight can be intimidating.
Pros & Cons
| Pros | Cons |
|---|---|
| Extremely powerful 2000W peak motor | Heavier than average e-bike (70 lbs) |
| Long-range 48V 25Ah battery (up to 70 miles) | Bulky moped-style frame not ideal for small spaces |
| Hydraulic disc brakes (dual, 4-piston) | May be overpowered for absolute beginners |
| All-terrain 20″x4.0″ fat tires | No integrated rear rack extension |
| Bright LED headlights & taillights | Not the cheapest e-bike in its class |
| S830 digital display with speed & diagnostics | |
| Adjustable seat/handlebars for comfort | |
| Sturdy build with high load capacity (400 lbs) | |
| Excellent ride comfort & shock absorption | |
| Removable/lockable battery |
What’s Included?
In the box:
- 1 x Euy S4 Electric Bike (with fenders and rear rack pre-installed)
- 1 x 48V 25Ah battery (with 2 keys)
- 1 x Battery charger & cable
- 1 x User manual
- 1 x Installation tool set
- All required pedals and accessories
I was pleasantly surprised by how complete the S4’s package is—right down to installation tools and clear assembly instructions. Everything needed for setup is present, and the inclusion of two battery keys adds an extra layer of security. While there’s no phone mount in the standard package, the digital display’s USB port can still charge your device on the go. The only possible omission would be a rear rack extension for those with heavier cargo needs, but most riders will find the included accessories more than sufficient.
Technical Specifications
| Specification | Details |
|---|---|
| Motor | 2000W Peak Brushless Motor |
| Battery | 48V 25Ah Lithium (1200Wh), Removable |
| Max Speed | 33 MPH (53 km/h) |
| Max Climbing Angle | 40° |
| Range | 33–70 miles (PAS mode) |
| Torque | 82 N·m |
| Brakes | Dual Hydraulic Disc, 203mm Rotors, 4-piston |
| Tires | 20″ x 4.0″ All-Terrain Fat Tires |
| Derailleur | Shimano 7-Speed |
| Suspension | Dual, Mechanically Damped Fork (Lockable) |
| Frame Material | High-Carbon Steel |
| Display | S830 Multi-Function LCD |
| Headlights | LED Bright |
| Charging Time | 6–7 Hours |
| Bike Weight | 70 lbs (32 kg) |
| Max Load | 400 lbs (181 kg) |
| Recommended Rider Height | 5.7–7.7 ft |
| Wheel Diameter | 20″ |
| Seat Height | 35″ |
| UL Listed | Yes |
| Warranty | 1 Year (Motor, Battery, Controller, Display) |
Features
- 2000W Peak Brushless Motor for maximum acceleration and hill-climbing
- 48V 25Ah (1200Wh) Removable Battery with UL certification, 70-mile max range
- 20” x 4.0” All-Terrain Fat Tires for unbeatable grip on mud, sand, snow, and pavement
- Dual Hydraulic Disc Brakes (203mm, 4-piston) for fast, confident stopping
- S830 LCD Multi-Function Display with real-time speed, battery, odometer, and diagnostics
- Shimano 7-Speed Gear System for versatile, smooth shifting
- Mechanically Damped Lockable Front Fork for customizable suspension
- Bright LED Headlights and Taillights for safe riding, day or night
- Adjustable Seat and Handlebars for a personalized fit
- USB Charging Port to keep your phone powered
- Dual Charging Modes (detachable/lockable battery)
- High load capacity (400 lbs) and rugged construction
From a feature standpoint, the S4 impresses with a rare blend of raw power, practical range, and real safety innovation. The S830 display brings peace of mind, especially for diagnostics on the go, while the dual hydraulic brakes and fat tires ensure you’re always in control, no matter the conditions. There’s genuine utility for commuters, outdoor enthusiasts, and anyone who just wants a fun, robust e-bike.
Final Breakdown
9.2 / 10
The Euy S4 Moped Style E-Bike hits a sweet spot between power, comfort, and versatility. Its standout motor and battery deliver high performance for riders who want more than the typical e-bike experience, without veering into the territory of electric motorcycles. The thoughtful inclusion of hydraulic disc brakes, fat tires, and a smart digital display demonstrates Euy’s commitment to safety and user experience.
The S4’s heavier build and bold design might not suit everyone, and absolute beginners should be mindful of the bike’s punchy acceleration. However, for most adult riders—especially those who crave adventure or need a reliable, all-weather commuter—the S4 will exceed expectations.
In summary, if you’re searching for a moped-style e-bike that genuinely performs across a variety of environments and feels like a solid investment, the Euy S4 absolutely deserves a spot at the top of your shortlist. Highly recommended.
| Preview | Product | Price | |
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2000W/3000W Peak Single/Dual Motor Electric Bike for Adults with 48/52V 25/30AH Battery, Fat Tires… | $1,099.00 $989.10 | View on Amazon |
