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GO FARTHER. RIDE BOLDER.

Meet the U8 Ultra—More Power, More Range, More Roads to Explore.

BUILT TO GO BEYOND

BUILT TO GO BEYOND BUILT TO GO BEYOND

All-Terrain Power for Every Ride. All-Terrain Power for Every Ride.

864 Wh

Battery Capacity

28MPH

Top Speed

330LBS

Max Load

POWER THAT MOVES WITH YOU

POWER THAT MOVES WITH YOU POWER THAT MOVES WITH YOU

Remove It. Charge Anywhere. Ride More. Remove It. Charge Anywhere. Ride More.

SMOOTHER STOPS, GREATER CONTROL

SMOOTHER STOPS, GREATER CONTROL SMOOTHER STOPS, GREATER CONTROL

Hydraulic Braking for Confident Rides. Hydraulic Braking for Confident Rides.

SMARTER POWER. LONGER LIFE.

SMARTER POWER. LONGER LIFE. SMARTER POWER. LONGER LIFE.

BMS 2.0 Protects Every Charge. BMS 2.0 Protects Every Charge.

30% LONGER

Battery Life

STAY CHARGED ON THE GO

STAY CHARGED ON THE GO STAY CHARGED ON THE GO

Power Your Phone While You Ride. Power Your Phone While You Ride.

GO FARTHER ON EVERY CHARGE

GO FARTHER ON EVERY CHARGE GO FARTHER ON EVERY CHARGE

Less Charging. More Exploring. Less Charging. More Exploring.

POWER FOR EVERY TERRAIN

POWER FOR EVERY TERRAIN POWER FOR EVERY TERRAIN

Strong Acceleration for Hills and Rough Roads. Strong Acceleration for Hills and Rough Roads.

1500W

Peak Power

READY FOR ANY SURFACE

READY FOR ANY SURFACE READY FOR ANY SURFACE

Stable Grip Across Road, Gravel, Sand and Snow. Stable Grip Across Road, Gravel, Sand and Snow.

26 × 4

INCH

KEEP THE ADVENTURE GOING

KEEP THE ADVENTURE GOING

With up to 105 miles of range, the U8 Ultra is ready for long rides, weekend escapes, and everything in between.

DUAL-ACTION SWINGARM SUSPENSION

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

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

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.

COMFORT BUILT INTO EVERY MILE

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.

SMOOTHER STOPS. GREATER CONTROL.

The intelligent BMS helps protect the battery against overcharging, over-discharging, overcurrent, short circuits, and overheating—delivering safer, more reliable power on every ride.

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.

Shift smoothly through 5 speed modes to find the right balance of control and pedaling effort for city streets, climbs, and changing terrain.

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
Peak Power
1500W
Max Range
105 Miles
Top Speed
28MPH
MTB Tires
26"*4"
Battery Capacity
864Wh