Best Moped Electric Bike
Best Moped E-Bike S4
Euy S4 E-bike
Euy Moped Style Electric Bike Front view
Euy Electric Moped Bike Top view

S4 Long Range Moped-Style Electric Bike

Regular price $1,599.00 Sale price$1,399.00
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Free Accessories Included

  • S4 Seat Extension
    $39.00 USD FREE
  • Euy E-bike Full Fenders
    $89.00 USD FREE
  • 16 in 1 Repair Multi Tool
    $15.00 USD FREE
  • Bike Pump
    $19.00 USD FREE
  • Euy S4 moped electric bike combines the speed of a moped with the eco-friendly nature of an e-bike. Special frame double shock design for a more comfortable moped-style ride.

    - EUY eBikes are free shipping in the US and are 95% assembled. Just unfold the folded electric bike and ride it.
    - All EUY electric bikes come with a one-year warranty.

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    • Free Shipping

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    • 1 Year Warranty

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      Reply within 8 hours

    • 14-Day Return

      Free returns within 14 days

    Moped Your Way To Fun!

    Euy S4 E-bike

    The S4 moped-style electric bike is perfect for commuters, weekend adventurers, and urban explorers. It has a powerful 1000W high torque motor and a 48V 25Ah battery. It has an adjustable 5 Levels pedal assist system and a full suspension that provides a comfortable and stable ride.

    • 1000 W

      Geared Hub Motor

    • 48V 25Ah

      Battery Capacity

    • 9-10 Hours

      Charging Time

    • 75 Miles

      Estimate Range

    • 400 Lbs

      Payload Capacity

    • 7 Speed

      Gear Shift

    • Moped Your Way To Fun!

      48V 25AH Battery 1000W Strong Power Full-Suspension Moped-style Design
      S4 Moped Style electric bike in Daylight
    • Moped Your Way To Fun!

      48V 25AH Battery 1000W Strong Power Full-Suspension Moped-style Design
      S4 Moped Style electric bike in night
    • Light
    • Dark

    Strong and Durable Frame

    The Strong Frame electric bikes are some of the best bikes on the market. They offer riders the superior performance, greater stability, and a longer lifespan than other electric bikes. The strong frame of the bike is rust-resistant and durable, allowing riders to take their bike on any terrain without fear of it breaking down. The frame also adds rigidity to the bike, allowing riders to take on tougher terrain and provide more control when riding. This makes the bike great for tackling hills, dirt roads, and other tough terrains with ease. The S4 electric moped is reliable and the overall design of the bike is stylish and modern, making it a great addition to any cyclist’s collection.

    Powerful 1000W Brushless Motor

    The S4 electric bike is equipped with a 1000W high-speed brushless motor which can help you conquer steep hills with ease. The upgraded motor has higher torque for better speed-up performance. 0 to 15 mph only takes 1.8 seconds. Riding on a 20-30 degree hill will not noticeably slow down.


    Motor Power


    Max Motor Torque

    Superior Battery, Goes the Distance

    Euy S4 is equipped with a 48V 25Ah lithium battery, when the e-bike is fully charged, it can last 44 miles in throttle mode and 75 miles in pedal assist mode. With a detachable battery design, you can charge your battery anywhere. With a lock in the battery, you can lock it to prevent the battery from being stolen. 7-8 hours for a full charge which is enough for daily commuting and adventure needs. IPX4 water resistance rating, safety in heavy rain.

    44-75 Miles

    Per Charge

    1200 Wh

    Total Battery Capacity

    7-8 Hours

    To Fully Charge

    Mobile Sofa

    PU Seat for a More Comfortable Ride

    The soft PU fabric is breathable and has a high elasticity memory foam to provide a suitable shock absorption function for long rides.





    Multifunctional LCD Display

    Backlight display, simplified action buttons for easier use.
    Press and hold the M button for 2 seconds to turn the on/off the display, and the "M" button can also switch to view information such as mileage, battery, speed, etc. The "︿" and "﹀" keys can adjust the gear.


    Displays the current riding speed.

    Battery Capacity

    A fuel gauge for your electrons.


    Calculate how many miles you ride.

    Gear meter

    5 levels of gear adjustment

    Best Moped-Style E-bike Front Fork

    Upgraded Alloy Suspension Front Fork

    Upgraded alloy suspension forks absorb vibrations and shocks for a smoother, more comfortable ride.
    Moped E-bike 7 Speed Gear Shift System


    The Shimano 7-speed gear shift makes it easier for the rider to climb uphill. It makes it simpler for the rider to adjust to variations in terrain. This system ensures that the rider has the perfect gear for any situation, making the ride more comfortable.

    Half Twist Throttle

    The half twist throttle helps to ensure a smooth and even acceleration. It helps reduce fatigue while accelerating and braking.
    Moped E-bike LED Headlight

    LED Angel Eyes Headlight

    The advanced lighting system of racing motorcycles utilizes a level LED bright headlight circle, offering high brightness and low energy consumption. The irradiation range is far, improving the safety of night riding.

    Mid-mounted Shock absorption

    The mid-mounted shock absorption helps provide more stability to the e-bike, making it easier to ride on rough terrain. This reduces the strain on the rider’s body and can provide a more pleasant ride.


    The hydraulic brake provides quick braking; smooth and powerful; superior stopping power; longer lasting; less effort to operate; can be used in any weather. 6.5 ft braking in dry and 12.4 ft braking in rain.
    Electric Moped Bike Cst Fat Tires

    20" X 4.0" CST FAT TIRES

    Better handling and stability on rough terrain, smoother ride, and improved rider comfort. Increased resistance against punctures and tears
    Durable Aluminum Crankset for Moped E-bike


    The saddle is ergonomically designed and ideal for long rides.
    S4 E-bike Taillight


    The brake lights will automatically activate when braking, safer to ride at night.


    • Brand EUY

    • Battery 48V 25Ah lithium battery

    • Battery weight 9.3 lbs

    • Range 40~44miles (throttle)

    • Range 70-75miles (pas)

    • Hub Motor 1000W rear hub motor

    • Maximum load 400 lbs

    • Recommended Rider Heights 5'7" ~ 6'5"

    • Pedal Assist Intelligent 5 Pedal-Assist levels

    • Model S4

    • Charger 48V/2A

    • Battery size 13.8" * 5.5" * 3.6"

    • Charging Time 7~8 Hours

    • Display LCD display

    • Top speed 28MPH (legally required in US)

    • Max torque 96 N.m

    • Weight 70.5 lbs (with battery)

    • Weight  61.3 lbs (without battery)


    • Tires 20" x4.0" fat tires

    • Wheels Spoke wheels

    • Throttle Twist throttle

    • Brake lever Grip levers with motor cutoff switch

    • Freewheel Shimano 7 speed gear shift

    • Brake Tektro 160mm hydraulic brakes

    • Chain KMC chain

    • Pedal Foldable pedals with reflectors

    • Frame High-Carbon Steel Frame

    • Front Fork Alloy front suspension fork with lockout and adjustment

    • Front Light 48V LED light

    • Saddle Soft PU shock absorber seat

    • Handlebar Adjustable height

    • Fenders Plastic


    • A -- Total Length 68"
    • B -- Maximum Handlebar Height 51"
    • C -- Rear Rack Height 22"
    • D -- Maximum Seat Height 35"
    • E -- Height of upper tube 31"
    • F -- Height of lower tube 22"
    • G -- Handlebar Length 27"
    • H -- Wheel diameter 20"



    Check out these testimonials!

    Customer Reviews

    Based on 4 reviews
    Tom Perry
    S4 for Seniors

    I was hesitant about buying the S4. The videos show young guys flying over the trails, hardly peddling, like they are in a motocross race. I'm a senior with a swollen leg due to medical problems. I don't want a motorcycle, I want a bicycle I can pedal as much as I can, and then get assistance going up hills. I live in the mountains of New Mexico, where the roads and trails I want to ride are rough; not town pavement. The S4 is great! Just what I needed! It's the first E-Bike I've ridden, so I had lots of questions. EUY answered each one by email within 24 hours. I appreciate that! To Seniors: when we lose our leg mobility, the rest of our body goes downhill fast! Get out of bed! Get off the couch! Get a bike and come join me! - Tom

    Simply The Best!

    Stop scrolling and buy this EUY. I live in Miami Beach & this "Beach Cruiser" is both a "Sleeper" & a Beast! Talk about a crowd pleaser. I bought my first E-bike 4 years ago. By nature, I educate myself prior to purchasing anything. Then my friends all follow & buy the same. For every E-bike I've bought, 6 friends will follow. This EUY is my 5th E-bike & by far my "Top pick" of any Bike by any mfg in the last 5 years. I wish I could attach a few pics. I accented with Red accessories including pedals, mirrors, phone & water bottle holders, Lock, undercarriage lights etc. My Compliments & appreciation to EUY for both an amazing bike as well as Stellar customer service.

    Darin Thoma
    Fast, Fun, Good Construction!

    The S4 is a nice smooth fast ride, really an electric motorcycle with speeds of 30mph, the only thing is the seat,I am still working with it to make it comfortable, I am 5' 10" and on my toes, it is only adjustable with modification, I have moved mine back and working on the rise in the back trying to make it more comfortable.

    william v scherrah
    too tall short legs

    can not ride because feet do not touch ground nice bike just not for me Hope i can send it back