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S4 Long Range Moped-Style Electric Bike
Euy S4
Euybike S4 Green
Best Moped Electric Bike

S4 Long Range Moped-Style Electric Bike

Regular price $1,599.00 Sale price$1,149.00
Shipping calculated at checkout.

  • In stock, ready to ship

Compatible Accessories

Euy S4 Seat Extension
Euy S4 Seat Extension
Euybike S4 Long Seat
Euybike S4 Long Seat
EUY S4 Electric Bike Battery
EUY S4 Electric Bike Battery
Bike Helmet
Bike Helmet
Ebike Rear View Mirror
Ebike Rear View Mirror
Ebike Passenger Foot Pegs
Ebike Passenger Foot Pegs
Euybike Inner Tube
Euybike Inner Tube
Euybike Fat Tire E-Bike Tire
Euybike Fat Tire E-Bike Tire
Euybike Gear Hub Motor
Euybike Gear Hub Motor
Electric Bike Front Fork
Electric Bike Front Fork
Disc Brake Pads
Disc Brake Pads
Euybike Throttle
Euybike Throttle
Euybike Storage Bag
Euybike Storage Bag
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Free Accessories Included

  • Prime Day Sale: Extended 1-year warranty
    $89.00 USD FREE
  • Prime Day Sale Gift: Seat Extension
    $89.00 USD FREE
  • Euy E-bike Full Fenders
    $89.00 USD FREE
  • 16 in 1 Repair Multi Tool
    $15.00 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.

    Euybike S4 E-Bike

    User Manual

    Toolkit to help you assemble the bike

    Battery, Charger, Front Light, Left & Right Pedals

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    • Free Shipping

      Fast shipping within 24 hours

    • 1 Year Warranty

      Buy with confidence

    • Fast Support

      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.

    • 1500 W

      Geared Hub Motor

    • 48V 25Ah

      Battery Capacity

    • Fast Charge

      Charging Time

    • 100 Miles

      Estimate Range

    • 400 Lbs

      Payload Capacity

    • 7 Speed

      Gear Shift

    • Moped Your Way To Fun!

      48V 25AH Battery Peak 1500W Strong Power Full-Suspension Moped-style Design
      S4 Moped Style electric bike in Daylight
    • Moped Your Way To Fun!

      48V 25AH Battery Peak 1500W Strong Power Full-Suspension Moped-style Design
      S4 Moped Style electric bike in night
    • Light
    • Dark

    Peak 1500W Brushless Motor

    The S4 electric bike is equipped with a 1500W 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 45~60 miles in throttle mode and 100 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

    Fast Charge

    To Fully Charge

    Updated Brake : All-weather Stopping Power

    Hydraulic Brake with confidence in any weather condition.
    The Euybike S4 is equipped with brakes that have been tested for all-weather braking ability. After EBR safety and brake test, the average stopping distance is 18'-11”, which is currently the best performance they've seen on a moped-style e-bike. It's also just under their broad current average of 19' which accounts for all of the e-bikes they've tested.


    Average Stopping Distance

    180 mm


    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

    USB Charging

    Charge your phone anytime

    Best Moped Style S4 Ebike Suspension Front Fork

    Adjustable Double Crown Suspension Front Fork

    Upgraded adjustable double crown suspension forks absorb vibrations and shocks for a smoother, more comfortable ride.
    Euybike S4 Moped Ebike 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.
    S4 Ebike Twist Throttle

    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 Absorber

    The mid-mounted shock absorber 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.
    Euybike Moped E Bike Hydraulic Disc Brake


    The hydraulic brake provides quick braking; smooth and powerful; superior stopping power; longer lasting; less effort to operate; can be used in any weather.
    Moped eBike 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 CNC Aluminum Crankset for Moped Ebike


    Made of high-strength aluminum alloy, lightweight, stylish appearance.
    Euybike S4 ebike 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 100miles 

    • Controller 48V/25A

    • Hub Motor 1000W rear hub motor (normal)

    • Maximum load 400 lbs

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

    • Pedal Assist Intelligent 5 Pedal-Assist levels

    • Model S4

    • Charger Fast charge

    • Battery size 13.8" * 5.5" * 3.6"

    • Charging Volt 100V~220V

    • Display LCD display

    • Top speed 28MPH (legally required in US)

    • Max torque 96 N.m

    • Weight 76 lbs (with battery)

    • Weight  66.8 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 Logan 180mm hydraulic brakes

    • Chain KMC chain

    • Pedal Pedals with reflectors

    • Battery Watt-hour 1200Wh

    • Front Fork Dual crown 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 171 reviews
    Kevin Yost
    One ride and I'm a believer. Superior quality.

    I was skeptical even after doing extensive amounts of research. But the proof is in the pudding and this pudding is quality and superior. Very easy to assemble and put together. The charge till a full battery only took about 5 hours. Very quick and acceleration is great. The brakes stop on a dime and riding at night was tremendous and brighter than I could have imagined with that front headlight. I have already put 50 plus miles on it just going to and from work alone. Since I'm riding it so much. My only suggestion would be to get a 2nd battery 🔋 to have a full charge always ready to swap out. Other than that this bike has exceeded any great expectations I've had. 10 out of 10 would recommend. I have also gotten about 20 plus compliments and questions about this amazing bike. Thanks again for the highest ofquality and affordability and an easy to assemble beast of a bike

    Ryan Ryall
    Fast Affordable Moped eBike

    So far I'm enjoying the S4 and have been able to get 40mi or so on PAS 5 with mostly throttle only. It will get to 30mph pretty easy on flat ground. I'm 6'1" and 220lbs and it moves me uphill quite well as well. The headlight is very bright at night and the brakes stop it quickly. Assembly was pretty straightforward with quality instructions. The build quality is pretty good and it feels sturdy and safe, even at high speeds. My only complaint is the passenger foot pegs I purchased on the S4 accessory page don't fit the S4. I reached out to support and the first support person said they are not compatible. The next day someone in support said they were compatible and sent me installation instructions for a different bike. Having the passenger seat makes the passenger pegs necessary and this is a pretty big oversight in the design. Pretty tough paying $40 for these that don't work.

    Highly recommend!!

    We own 4 of the S4 e-bikes and we absolutely love them!! We have no complaints whatsoever but I would recommend a seat upgrade if you don’t have a lot of cushion and plan on riding a lot.

    brian haueter
    I’m happy

    Got 50 miles on it in 2 days. The battery charge lasts a long time, very impressed i’m 6’4 280 and the suspension is perfect for me. Very nice ride but the first thing you want to do for an older person like me is throw away the seat!! Everything else is fine. I ordered this seat from Amazon when I ordered the bike, it’s for a café style motorcycle, made up a couple plates to convert the boat holes. and bolted it on. all the difference in the world. It is an absolute pleasure to ride for the money!

    Sam Stout
    Best ebike so far. The range of this ebike is incredible.

    Im a street and sidewalk suffer, but my passion is off roading, trail riding. The S4 has not let me down! She loves the street and my dirt passion! The battery has the power to handle the wide range of challenges iv put it through.
    Thanks for a tough enough for me to enjoy!