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Two people riding together Euybike S4 moped electric bike
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Euybike S4 Electric Bike for Adventure
Best Moped Electric Bike
Euy S4
S4 Long Range Moped-Style Electric Bike
Euybike S4 Green

S4 Long Range Moped-Style Electric Bike

Regular price $1,599.00 Sale price$1,199.00
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
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Free Accessories Included

  • Father's Day Sale: Extended 1-year warranty
    $89.00 USD FREE
  • Father's Day Sale: Expansion Seat
    $59.00 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 156 reviews
    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!

    Dave B.
    Awesome ebike

    Love this bike. Fast and so much fun to ride.

    EUY S4, daily commuter

    If you are looking for a solid e-moped style ebike, that's well made, fast, and not extremely expensive, this is the one! After speaking to my wife about wanting this specific bike, she bought this model (as a surprise) for my daily commute to and from work. For a few months I watched and read several reviews regarding e-moped style bikes. Everything I saw in video or read on a blog rated the S4 very high. Yes there are a ton more expensive brands with flashier paint jobs. However the S4 seems to perform just as well as most of those brands and in many cases out performs many of those brands! This bike is extremely well made and they deliver on the claims made about the bike. When I received my bike there was a minor issue with the speedometer not reading the top speed correctly. I emailed EUY, they quickly got back to me and instantly started to diagnose what would cause that problem. They then asked me if I felt confident in replacing a couple parts myself or would a mechanic be needed. I'm pretty good with my hands so I felt confident replacing the parts. It made me feel good knowing the company was quick to resolve my problem, and asking if I would need a mechanic. They have really done an amazing job and taking care of me. For the bike alone I give it a 4.5 to 5 stars, customer service I can't give high enough praise 5 stars as well. Because of how well they have taken care of me I will be a loyal customer and look forward buying more EUY products. If you are thinking of buying an ebike or other product from this company I highly recommended them.

    Euybike S4

    This is the best ebike 1000w motor can't beat it's price very strong feel to bike doesn't wobble or flimsy feeling to make it even better change the tires to something more reliable if you're going off road get a good lock and alarm system ride safe

    Chris Butler
    It’s early but we love it!!

    I’ll start with how the bikes came to us, they were professionally packaged and done so in a way that protected all of the parts. Some people have criticized the installation directions; however, we found them to be straight forward and easy to follow. We found you had to put the front fender on BEFORE installing the front tires, but other than that, everything was seamless. The tools provided were fine, we used our own but the ones provided would have worked fine.

    The bike itself we absolutely love! Be ready for the bike to take off quickly if you only use the accelerator, but everything is just as advertised. We added the seat extension and it was good for me as a man with a little longer legs. I like being able to sit back a little further. The bikes are smooth, fast if you want it to be, easy to understand and exactly what we wanted. We would ABSOLUTELY buy them again! The only note I will add is, one of our friends was going to ride, but at 5’ 2”s she was too short to reach the ground. This bike definitely has a sweet spot for the size of the rider. It’s probably 5’ 6” or so and up.