E2/K20 Electric Bike for Adults, 48V 13Ah/15Ah Battery, Up to 28 MPH & 46.6/60 Miles (PAS), 750/1000W Peak Ebike with All-Terrain 20"/26'' Fat Tires, UL Certified, Moped E-Bike
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30-day refund/replacement
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Availability:
Only 4 left in stock, order soon!
Arrives
Aug 2 – Aug 7
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Style: K20-1000w 48v 15ah
Features
- PEAK 1500W POWERFUL MOTOR: Windone K20 electric bike for adults adopts a Peak 1500W motor, producing a top speed up to 32 MPH. The motor provide great power for every riding mission, such as climbing hill. And our product has passed stringent UL 2849 testing. (Testing lab name: UL LLC)
- 48V 15Ah LARGE BATTERY: With a 48V 15Ah robust IPX5 waterproof lithium-ion battery, this ebike can achieve 30-34 miles in pure electric mode and 60 miles in pedal assist mode (PAS) after a full charge.
- TERRAIN ADAPTABILITY WITH FAT TIRES: Features 26 x 4'' Fat Tires designed for superior grip and stability on all terrains, the electric bike is perfect for navigating diverse landscapes, from city streets to rugged trails. And they provide enhanced traction and shock absorption, ensuring a smooth and stable ride.
- 7-SPEED SYSTEM: The 7-Speed System provides precise gear shifts for various riding conditions. Seamlessly adjust speeds for uphill climbs, rapid acceleration, and smooth cruising. It enhances control and efficiency, allowing riders to maintain a comfortable pace effortlessly.
- THREE RADING MODES: With Cycling Mode, Pedal Assist Mode and Pure Electric Mode, this electric bike adapts to various cycling situations and needs. And they can be easily switched- Just press the "+" button with your thumb after adjusting the speed level, it will enter pure electric mode, and step on the pedal, it will enter Pedal Assist Mode automatically.
- HANDSOME AND RETRO STYLE: The retro design reminiscent of classic bicycles, exuding a nostalgic charm. The sleek lines and vintage-inspired details create a distinctive appearance. Ride with confidence and style, feeling like a modern-day superhero on the road!
- WINDONE 24H SUPPORT TEAM: We are very concerned about the customer experience with WINDONE electric bike, if you have any questions or suggestions about WINDONE electric bike, please contact the seller or email us in the first time, we will reply to your message within 24H.
Bike Type: Electric Bike
Age Range (Description): Adult
Brand: Windone
Number of Speeds: 7
Color: Black
Frame Material: Aluminum
Suspension Type: Front
Special Feature: Dual Disc Brake
Included Components: Tool Kit
Size: Large
Bike Type: Electric Bike
Age Range (Description): Adult
Brand: Windone
Number of Speeds: 7
Color: Black
Frame Material: Aluminum
Suspension Type: Front
Special Feature: Dual Disc Brake
Included Components: Tool Kit
Size: Large
Brake Style: Disc
Item Weight: 42 Kilograms
Style: K20-1000w 48v 15ah
Model Name: K20 Pro Max
Lithium Battery Energy Content: 720 Watt Hours
Manufacturer: ZHEJIANG AIJIU TECHNOLOGY CO., LTD.
Item Package Dimensions L x W x H: 63.78 x 30.71 x 11.42 inches
Package Weight: 43.5 Kilograms
Brand Name: Windone
Warranty Description: 12-month or 6-month warranty for different parts
Material: Aluminum
Part Number: K20
Date First Available: March 26, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Aug 2 – Aug 7
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: E2-750w 48v 13ah
It's been a fantastic experience so far! The bike is incredibly well-built, with a sturdy high carbon steel frame and a sleek black design that turns heads wherever I go. The 750W brushless hub-drive motor is powerful enough to handle both casual rides and off-road adventures with ease. While the max speed is advertised as 28MPH, I've been consistently getting around 26-27MPH, which is still impressive and might vary for others. One of the standout features for me is the full suspension system. The front fork absorber and rear suspension work together to provide a smooth and comfortable ride, even on bumpy terrain. The 20"×4.0 fat tires also contribute to the bike's excellent stability and traction. The brakes are solid and reliable, giving me the confidence to ride at higher speeds without worrying about stopping power. The dual hydraulic brake system ensures that I can come to a quick and safe stop whenever needed. The 48V/13Ah removable battery is another highlight. It charges relatively quickly (6-7 hours) and provides a decent range, allowing me to cover long distances without any issues. The battery is also UL2849 certified, which gives me peace of mind regarding its safety. Overall, the Bike is a great investment for anyone looking for a versatile and stylish e-bike. Whether you're commuting, exploring new trails, or just enjoying a leisurely ride, this bike has got you covered. Highly recommended!
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Reviewed in the United States on January 1, 2025 by Jeet patel Jeet patel
Style: E2-750w 48v 13ah
Day one review: 50 y/o disabled Vet. Assembly last night was straight-forward, simply follow the video and use included tools (or pull out a cordless driver and some sockets). Charged the battery over night and fired it up this morning. Immediately got Error Mssg #3, looked in the manual and found a wire that I hadn't connected. Bam, up and running. Directions, videos, and manual in American English. Started at level 1 to get the feel, very mild and comfortable, quickly worked up to #5 and ripped off down my roads. Hit 25 mph and had an absolute blast - Super Comfy. Pros: UL listed battery - Don't buy an ebike without this! Mild, not torquey, plenty fast for an old guy with multiple back injuries. Simple to use, Strong, heavy bike with soft suspension. 750 Watt motor is considered a "pedal bike" by law so can go anywhere a regular bike goes. Cons (for some of you, not me): not really a wheelie, stump jumper, burn out bike. Top speed mid-upper 20s. If that's what you need, you need to look at 1000-2000 Watt range.
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Reviewed in the United States on May 22, 2025 by Ender Ender
Style: E2-750w 48v 13ah
I am waiting to hear from customer support. The bike is nice except there is no throttle response whatsoever. The headlight works, taillight works, brakes are good, computer comes on and displays no errors, battery is fully charged. The throttle does nothing at all, it's literally a regular bicycle with powered lights. Not a good first impression. I've checked every connection and removed the seat to check connections at the controller and still nothing, i have unplugged and reseated everything
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Reviewed in the United States on July 17, 2025 by Christopher M. Russell
Style: E2-750w 48v 13ah
The media could not be loaded. Why did you pick this product vs others?: This bike is a lot of fun and definitely gets attention, but let’s be real—it’s more moped than muscle builder. It’s marketed that way, so no complaints, just know what you’re getting. It does have seven gears, but none of them really change the resistance or give you that “burn” like a traditional exercise bike would. It’s basically built for cruising—and it does that really well. The motor’s solid, it rides smooth, and the fat tires handle bumps and rough pavement like a champ. I mostly just vibe with it and let the battery do the work. One thing to note: I’m 5’4” and this bike is definitely a little tall for me. Not impossible, just something shorter folks might want to keep in mind—mounting and stopping takes a little finesse. Overall: solid build, great speed, fun to ride. Just don’t buy it thinking it’s gonna replace your spin class. 😂 Smooth ride: 5/5
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Reviewed in the United States on July 6, 2025 by Batwoman
Style: E2-750w 48v 13ah
Bought this as a Christmas present for my son, and he absolutely LOVES it! He’s thrilled with both the performance and the design of the E2 model. The motor has plenty of power for hills and longer rides, and the pedal assist makes commuting or recreational riding effortless. It handles well, has solid construction, and the battery life has been much better than expected. We did run into a few issues early on, but customer service was *fantastic.* They responded quickly, were incredibly helpful, and made sure everything was resolved without hassle. It’s clear they stand behind their product. If you’re on the fence for this one, take the chance. You won’t regret it!
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Reviewed in the United States on May 18, 2025 by Kristen