isinwheel U8 Ultra Electric Bike for Adults
Max Power
Max Range
Top Speed
Fat Tire
Battery Capacity
Max Load
isinwheel U8 Ultra Electric Bike for Adults
1500W Peak Class 3 Performance
A powerful 1500W peak motor delivers smooth acceleration and speeds up to 28 MPH, built for riders who want stronger performance and confident climbing ability.
Ultra Long-Range Riding
The 48V 18Ah removable battery provides up to 105+ miles of range, making it ideal for long commutes, weekend adventures, and extended rides.
26×4.0" Fat Tires for All-Terrain Comfort
Large fat tires combined with front full suspension provide enhanced stability, traction, and shock absorption across city streets and rough terrain.
Step-Thru Comfort & Shimano Control
A step-thru frame design paired with professional Shimano 7-speed gearing delivers easier mounting, smoother shifting, and more comfortable everyday riding.
Durable Integrated Frame Design
Built with a strong moisture-resistant aluminum integrated body supporting up to 330 lbs, designed for reliable long-term performance.
Specification
|
Battery
864Wh |
Range
105 miles per charge |
|
Max Speed
28 MPH |
Motor
1500W Peak Power |
|
Wheel Size
26*4.0 inches |
Water Resistance
IP65 |
|
Charge Voltage
100–240V / 3A |
Charge Time
7–8 hours |
|
Operating Temperature
–4°F – 140°F |
Net Weight
81.5 lbs |
|
Product Dimensions
78.0 × 28.7 × 46.9 in / 198 × 73 × 119 cm |
Max Load
330 lbs / 150 kg |
What's in the Box
Fast, Trusted Shipping
Ships from U.S. local warehouses via FedEx / UPS / Truck Delivery, arriving in 2–5 business days.
Max Power
Max Range
Top Speed
Fat Tire
Battery Capacity
Max Load
isinwheel U8 Ultra Electric Bike for Adults
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
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FAQ’s
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Contact Us
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FAQs
Is the U8 Ultra a Class 3 eBike?
Yes, U8 Ultra is Class 3 eBike, capable of reaching up to 28 mph with pedal assist. You can also use the throttle for effortless riding when you need a break from pedaling.
Can I ride the U8 Ultra off-road?
Yes! U8 Ultra, which feature 26×4" fat tires and a 1500W motor — perfect for trails, sand, or snow. The smaller 20×3" models (U8 & U8 Pro) perform best on city streets and light gravel paths.
Compared with other off-road e-bikes, what makes the U8 Ultra stand out?
The isinwheel U8 ultra combines premium performance with unbeatable value. Unlike many off-road e-bikes in the same class, it features a full aluminum alloy frame for greater durability and lighter weight. It’s equipped with the latest BMS 2.0 battery management system, ensuring safer and more efficient power delivery. The IP65 waterproof rating allows you to ride confidently in various weather conditions.
Does the U8 Ultra support pedal assist?
Yes. U8 Ultra features 5 levels of pedal assist and a twist throttle, so you can choose between full-electric, pedal assist, or manual riding depending on your preference
Does the U8 Ultra electric bike has a USB port for charging phones?
Yes, the U8 Ultra E-bike has a USB charging port on the battery. You can charge your phone at any time when you need.
How to get spare parts or after-sales service?
You can order genuine parts or repairs via our official website or authorized service partners. Contact support@isinwheel.com for details.
What is the suitable rider height and weight limit?
U8 Ultra: Designed for taller riders between 5'9"–6'6". The bike weighs about 85 lbs and also supports up to 330 lbs.
Can I ride in the rain or on wet roads?
Yes, light rain is fine. Avoid deep puddles and ensure battery and connectors remain dry to prevent damage.