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- 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
Moped Your Way To Fun!
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 20Ah battery. It has an adjustable 5 Levels pedal assist system and a full suspension that provides a comfortable and stable ride.
Peak Motor
Battery Capacity
Charging Time
Estimate Range
Payload Capacity
Gear Shift
The S4 electric bike is equipped with a peak power of 1000W high-speed brushless motor, helping you conquer steep hills with ease. The upgraded motor has 96 N · m max motor torque for better speed-up performance.
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 45~50 miles in throttle mode and 60 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.
Per Charge
Total Battery Capacity
To Fully Charge









Brand EUY
Battery 48V 20Ah lithium battery
Battery weight 9.3 lbs
Range 60 miles
Controller 48V/25A
Hub Motor 750W 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 66.7 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 mechanical disc brakes.
Chain KMC chain
Pedal Pedals with reflectors
Battery Watt-hour 960Wh
Front Fork Dual crown suspension Fork
Front Light 48V LED light
Saddle Soft PU shock absorber seat
Handlebar BMX style handlebar
Fenders Plastic
Fast shipping within 24 hours
Buy with confidence
Reply within 8 hours
Free returns within 14 days
I love my new bike. I was pleasantly surprised this shipment made it to my house so quick and when I contacted service with questions about the warranty and a few concerns about the bike they were very quick to respond and rest assured back their product 100%!!
It took some trial and error to get the bike dialed in to work the best for me but there are so many things with this bike that can be customized to your personal tastes and feel for a good ride. The aftermarket seat is a perfect upgrade but even the original seat is really good.
Thanks Euybike, for an awesome experience!!
My son has put almost 4000 miles on his bike in alittle over a year . He's built a trailer and just finished towing a lawnmower 5 miles down roads and trails . It's never skipped a beat except for the brakes failing
This bike is incredible for the price, the features it includes, the battery life, and the torque. I have put a couple hundred miles on the bike in less than a month including riding with me and another adult passenger, and everything has been smooth, aside from a flat tire on the first ride which I fixed by adding slime to the tire. It has been riding smooth since. Most of the parts are pretty simple to tighten and work on if you have experience with bikes at all, and it was easy to assemble as my first e-bike in about an hour or so. I have not had to contact customer service or use my warranty yet so I can not comment on that, but I did get a quick response on their online chatbot and overall I get a good feeling about the company responding. I will update if anything changes. If you are on the fence, do it!! I upgraded to this from a 20mph Segway scooter and it has been such a fun time taking it out every day to parks and friends houses and the grocery store, etc. I got a full face dirt-bike helmet for this after a few days riding and you will see why, definitely recommend it. Have fun and be safe!
All I can say is it’s fast and pretty good off-road. It can handle some light 4x4 trails. I only have to pedal on steeper hills, and I weigh 240. I kinda feel like I am on a badass motorcycle.🤟🏻. 35 mph downhill feels pretty fast to me. The seat is comfortable enough. My only complaint is I think fluid in my rear hydraulic brake probably came with air in it because I need to pump the brake three times to get it as responsive as my front one. But I think it’s great and I am sure the upgraded version would be cool too.
This bike is a ton of fun. I received it yesterday and assembled it last night. Today was my first day riding around town. I was doing 38 mph on the way home..
Totally impressed by the price and the performance. I would do it again a million times. My only negative is that I may need a helmet, haha. Really great buy...