isinwheel U8 Ultra Electric Bike for Adults
Black
Sale price$929.99Regular price
$2,199.99
1/24
48V 18Ah
Battery Capacity
Hydraulic
Disc Brakes
IP65
Water Resistance
7-Speed
Shimano Gears
1500W
Motor Power
105 Miles
Max Range
All-Terrain Power, Effortless Control.
isinwheel U8 Ultra Electric Bike for Adults
Sale price$929.99Regular price
$2,199.99
Save $1,270.00
Hydraulic Disc Brakes for Smooth Control
Hydraulic brakes deliver stronger stopping power and a smoother braking feel, helping you slow down or stop with less effort.
1500W Peak All-Terrain Performance
A powerful 1500W peak motor delivers confident acceleration for hills, rough roads, and everyday rides.
26×4.0" Fat Tires for Stability
Wide fat tires improve grip, comfort, and balance across city streets, gravel paths, sand, and uneven terrain.
Smart Battery System with Fast Charging
The 48V 18Ah battery is paired with a professional battery management system and charger for safer, faster, and longer-lasting performance.
Shimano 7-Speed & Bright Front Light
Shimano 7-speed gearing helps you ride smoothly across changing terrain, while the high-power front light improves visibility for night rides.
Secure Payment 1-Year Warranty Fast Shipping
Secure Payment - Pay safely with PayPal, cards, Shop Pay, Apple Pay, Google Pay, Klarna, or Affirm.
1-Year Warranty - Covered by the isinwheel Limited Warranty with US-based support.
Fast Shipping - Free shipping to the contiguous U.S. via UPS/FedEx.
Secure Payment
Pay safely with PayPal, cards, Shop Pay, Apple Pay, Google Pay, Klarna, or Affirm.
1-Year Warranty
Covered by the isinwheel Limited Warranty with US-based support.
Fast Shipping
Free shipping to the contiguous U.S. via UPS/FedEx.
Protect+ is designed to give you peace of mind:
What' s Included in Your Extended Warranty
- Protection against accidental damage from everyday riding
- Full coverage for mechanical and electrical failures
- Coverage for functional issues caused by normal wear and tear
- Repair, replacement, or reimbursement if repair isn' t possible
Why choose Protect+?
Add Protect+ Plan including Accident Protection
1 Year Extended Warranty
$129.99
BEST SELLER
2 Year Extended Warranty
$180.99
BEST SELLER
Popular Upgrades
Specification
|
Battery
864Wh |
Range
105 Miles Max Range |
|
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
48V 18Ah
Battery Capacity
Hydraulic
Disc Brakes
IP65
Water Resistance
7-Speed
Shimano Gears
1500W
Motor Power
105 Miles
Max Range
GO FARTHER. RIDE BOLDER.
Meet the U8 Ultra—More Power, More Range, More Roads to Explore.
DUAL-ACTION SWINGARM SUSPENSION
The swingarm and internal spring work together to absorb bumps, cracks, and road vibrations—helping you stay stable, comfortable, and in control.
ERGONOMIC COMFORT SADDLE
Wide, contoured support and thick layered cushioning help distribute pressure and reduce fatigue, keeping you comfortable mile after mile.
ENGINEERED FOR EVERY MILE
Comfort, protection, and dependable power for every ride.
READY FOR WET CONDITIONS
IP65 water-resistant protection helps shield key electrical components from rain, splashes, and everyday moisture.
COMFORT BUILT INTO EVERY MILE
Front suspension, oversized fat tires, and a cushioned saddle help smooth out bumps for a more comfortable, controlled ride.
ABSORB THE FIRST IMPACT
Front swingarm suspension helps soften bumps, cracks, and uneven pavement before they reach the rider.
CUSHION EVERY SURFACE
Oversized fat tires add natural shock absorption while improving grip and stability across changing terrain.
STAY COMFORTABLE LONGER
A wide cushioned saddle with dual-spring support helps reduce vibration and fatigue on longer rides.
MADE FOR EVERYDAY EASE.
Thoughtful Everyday Features Bring More Comfort, Confidence, And Convenience To Every Part Of Your Daily Commute.
Get 80% stronger braking with smoother control.These low-maintenance brakes reduce vibration by 50% for stable stops on any terrain. Perfect for fast eBikes and rough rides.
Clear LCD Display
Key ride data at a glance.
Shimano 7-Speed Gears
Smooth shifting for every road.
Stylish LED Headlight
Bright visibility with a modern look.
Ready-to-Load Rear Rack
Carry daily essentials with ease.
Responsive Disc Brakes
Reliable stopping when it matters.
FAQs
What are the differences between the U8 Series models?
The U8 Series includes four models — U8, U8 Pro, U8 Plus, and U8 Ultra — each designed for different riding needs.
U8: 1000W peak power, up to 75 miles range, 20×3" tires — compact and powerful for daily commutes.
U8 Pro: 1000W peak power, extended 105 miles range, 20×3" tires — same size with a larger battery for longer rides.
U8 Plus: 1500W peak power, up to 75 miles range, 26×4" fat tires — bigger wheels and stronger motor for off-road versatility.
U8 Ultra: 1500W peak power, extended 105 miles range, 26×4" fat tires — the top-tier model for maximum power and endurance.
Each model offers the same isinwheel quality and comfort but varies in power, range, and tire size to fit different riding styles.
Is the U8 Series a Class 3 eBike?
Yes, all U8 Series models are Class 3 eBikes, 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 Series off-road?
Yes! Especially the U8 Plus and 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 Series support pedal assist?
Yes. All models feature 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
Is the battery removable?
Yes, the lithium battery is fully removable, so you can charge it on or off the bike for convenience and security.
Does the U8 Series electric bike have a USB port for charging phones?
Yes, the U8 Series 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 & U8 Pro: Best suited for riders between 5'4"–6'2". The bike weighs about 67 lbs and supports a maximum load of 330 lbs.
U8 Plus & U8 Ultra: Designed for taller riders between 5'9"–6'6". The bike weighs about 85 lbs and also supports up to 330 lbs.
Each model comes with an adjustable seat height, allowing riders to find their most comfortable position for commuting or long-distance rides.
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.
Which one is right for you?
Model
Black
$929.99
Buy NowPeak Power
1500W
Max Range
105 Miles
Top Speed
28MPH
MTB Tires
26"*4"
Battery Capacity
864Wh
Some of the reviews shown are from related products the merchant grouped with this one.
S
Bought it almost a month ago for work and travel and can say it’s been great for me! On the throttle I’m going max 20 mph and pedal assist up to 28-29mph!
B
Great e-bike except for the fact there is no real pedal assist… when you pedal the bike goes to the top speed regardless of what level you have it set on. I set the bike to pedal assist 1 and as soon as I began to pedal the bike went to 28 mph. Just be aware when purchasing this bike you will have use the throttle if you do not want to go full speed when riding. I wish this would’ve been clear in the description. The pedal assist listed is false
UPDATE- After several emails back-and-forth with the company, I was told I could be sent a new controller that will resolve the issue with the pedal assist. I received a new controller. It was a fairly easy install and now the bike works as described. I love this bike. It has brought back the joy of riding. I have over 200 miles on it already. Highly recommend. Changing my review to 5 stars!!
S
I bought two for my 14-year-old sons, who love this bike. Overall, they're very nice bikes, but too aggressive for me. What I don't like is when I turn on the assist, the bike goes 17 mph after four pedal strokes. It's practically impossible to ride slowly with the assist. If you want to go slowly, you'll have to use the throttle or not to use assist. Overall, the bike is beautiful, sturdy, and worth the money. Very powerful !
U
It's a very nice bike. It's beautiful and looks strong. I like it very much. Everything is as stated.
G
This is one of the most satisfying buys I have ever made. Quick delivery, easy assembly, and overall great performance, this bike has been a lot of fun. It is a little heavier than I anticipated but I enjoy riding it and the battery life is great too.
P
Incredible ride on the U8. Battery life is incredible. Plus the customer service is excellent. I had a few questions. Got them all answered promptly would definitely buy from isinwheel again.
R
This is a great Bike, Everything as described and works flawlessly. Great range and power.
A
I recently bought the U8 ebike for my daughter to use to commute between school and home. She likes the ease of switching between pedaling and using the electric assist. The electric motor provides a smooth push when she gets tired, especially when starting out or going uphill, and the front suspension provides a stable ride on bumpy roads. I love to hang out on it on the weekends, and I also like the adjustable seat and handlebars because my daughter and I are different heights and it's easy to adjust for our heights, which is a valuable and fun addition to my family.
J
This bike is a great value for the money. It has enough power to ride smoothly when going uphill. It feels like a regular bike when pedaling without assistance. The assist is smooth and helpful when going uphill. The throttle is easy to use and has cruise control. I am 5 feet 4 inches tall and this model fits me well. The seat height is adjustable, as is the height and angle of the handlebars. The low span is a plus. The seat is comfortable for long rides. If there are any issues, I will revise this review after more miles on the bike. Also, thanks for the excellent customer service as it gives me peace of mind to know that any issues will be addressed.
K
My friend told me about this e-bike. So I bought it. I liked it as soon as I saw it. It looks good. It took about 30 minutes to install. It was easy to assemble. I use it to commute to work every day. It is comfortable and safe. It has an internal battery that is waterproof. It can be removed and charged separately. The battery charges quickly and lasts a long time. I love that it has a night light, which makes it easy for me to get around at night. It is great for commuting and running errands. I would recommend it to my friends.
R
This Bike was a great purchase, Very Good Quality at the price. Bike works amazing and I love it.
M
I love this bike and for the price u can't beat it. Rides smooth on pavement,sidewalks and over rocks. The pedal assist helps while letting u pedal and still exercise! I would buy isinwheel products again!
C
For the money this was well worth it heavy duty - great tires - just an exceptional bike
B
isinwheel U8 Ultra Electric Bike for Adults
J
Sent me the wrong color i want a refund.
K
Love my e bike rides good
j
Great looking bike
G
Very nice bike better than I thought it would be! Thank you so much.
J
Amazing bike, fast and shoot even did some wheelies on it. Rear brakes having some issues since first rude but they are fixable so no worries. Recommended
N
Love it! Great customer service. They are quick to answer any and all questions I had.
S
Rear rack was extremely hard to mount to the bike due to the direction of the screws. Had to manipulate it to get the screws back in the appropriate direction. I now have to have the rear brakes adjusted (there are none) and the front tire spokes are clicking against the brake caliper.
P
isinwheel U8 Plus Electric Bike for Adults
J
Love it
D
I am 6'2", 220lbs. I live in a very hilly area. Older too. I wanted an ebike that could handle all that. This bike does! This motor does not struggle on the hills at all and the 18ah battery eliminates range anxiety. I did have a mechanical issue. Support was easy to contact very helpful. This is my first ebike and I'm impressed and hooked.
D
Bought this for my husband who is over weight, diabetic and sedentary! I didn't want to spend $2k on a bike shop bike and just wanted to see if he'd give it a try. He is 71 and hasn't been on a bike of any kind in over 50 years! HE LOVES IT!!! Macho man even wears a helmet!!
Pros: Easy to assemble, easy to ride!
Cons: Haven't found one yet!!
B
Let me begin with… I spent no less than 30 hours researching which e bike for my college senior son, who is 6’4 and 256 lbs. he lives where there are hills, and has a car, but on campus- an e bike is the ultimate convenience. I made a spread sheet- to compare allll the things- the motor, the battery, the weight Capacity, the height recommendations, the torque, the grade aptitude, the weight of the bike, personally we needed a non folding (for his size- we wanted more rigidity in the frame ) the mph, the mile range, the tire size, the frame length , step thru - you name it. And this bike, in this price point - knocked it outta the park. My son had been using it for about 9 days so far- and he absolutely loves it. He mentioned that it easily does the speed it promised- it handles well and he’s super happy. I did order a wider seated seat, before the bike came (the bike was delivered to him at school as a b day gift) and he accidentally forgot to take the good seat home- so he’s been “suffering” with the stock seat until he comes home for the better one next week… lol. He’s young, he’ll survive- but def change the seat out- and there you have it!
isinwheel Extended Warranty
Your focus should be on the road—not the repair bill. Protect+ keeps your ride protected without unexpected costs.
| Full Mechanical & Electrical | ✔ |
| Accidental Damage | ✔ |
| Wear & Tear Coverage | ✔ |
| Free Shipping | ✔ |