isinwheel U8 Ultra Electric Bike for Adults

The isinwheel U8 Ultra Electric Bike is the ultimate high-performance fat tire e-bike designed for riders who want unmatched power, range, and durability. Featuring a 1500W peak motor (Class 3), it reaches speeds of up to 28 MPH with smooth acceleration and excellent climbing ability.

Equipped with a 48V 18Ah (864Wh) UL-certified battery, the U8 Ultra delivers an impressive 105+ miles per charge and recharges in 7–8 hours, making it ideal for long-distance commuting, weekend adventures, or off-road expeditions.

Its 26 × 4.0-inch fat tires, front adjustable suspension fork, and Shimano 7-speed drivetrain allow for versatile riding across sand, snow, gravel, and pavement. The step-thru aluminum integrated frame ensures comfort, strength, and durability while supporting riders up to 330 lbs.

Built with BMS 2.0 battery management, IP65 water resistance, and UL-certified components, the U8 Ultra is engineered for safety, reliability, and all-weather performance.

Why Riders Choose the U8 Ultra

• 1500W motor (Class 3) – reach speeds of up to 28 MPH.

• 48V 18Ah (864Wh) UL-certified battery – long-range power up to 105 miles.

• 26 × 4-inch fat tires – excellent grip on all terrains.

• Front adjustable suspension – absorbs shocks for smoother rides.

• Shimano 7-speed system – precision gear shifting for climbs and descents.

• Step-thru aluminum frame – strong, durable, and moisture-proof.

• 330 lbs max load – perfect for carrying cargo or heavier riders.

• UL + BMS 2.0 certified – advanced safety and reliability.

• IP65 water resistance – built to handle tough weather conditions.

Power and Endurance

Spec	Detail
Motor	1500W Rated Power (Class 3)
Battery	48V 18Ah / 864Wh (UL-certified)
Max Speed	28 MPH
Max Range	Up to 105 miles per charge
Charging Time	7–8 Hours
Water Resistance	IP65
Standards	UL-certified + BMS 2.0

Comfort, Safety & Control

• 26 × 4.0-inch fat tires – stability across snow, gravel, sand, and city roads.

• Front adjustable suspension – smooth ride on bumpy terrain.

• Shimano 7-speed drivetrain – optimized for all terrains.

• Dual disc brakes – responsive and reliable stopping power.

• Step-thru aluminum integrated frame – easy to mount, strong, and weather-resistant.

• High weight capacity (330 lbs) – suitable for commuting, leisure, or carrying cargo.

Smart Tech On-Board

• BMS 2.0 battery management system – prevents overheating, overcharging, and ensures long battery life.

• Backlit LCD display – shows speed, distance, battery life, and riding mode.

• Integrated LED headlight & rear safety light – visibility in low-light riding.

• Removable battery – convenient on/off-bike charging.

Fit & Dimensions

Spec	Measurement
Wheel Size	26 × 4.0 in (fat tires)
Net Weight	81.5 lbs (37 kg)
Max Load	330 lbs (150 kg)
Product Size	78.0 × 28.7 × 46.9 in / 198 × 73 × 119 cm
Operating Temp	–4°F – 140°F

What’s in the Box

• isinwheel U8 Ultra Electric Bike ×1

• Charger ×1

• Manual ×1

• Tool Kit ×1

• Brand Card ×1

VoltCentre Promise

Free Shipping – Fast delivery with real-time tracking.
Warranty & Coverage – Backed by manufacturer warranty plus VoltCentre’s support.
Curated Collection – Only rider-tested, approved products make it to our store.

isinwheel Warranty

Our warranty policy covers all the products in your order for up to 12 months after sales (excluding accessories). The 30-day return and refund policy allows you to buy with peace of mind.

• Shipping damage

  • Inspect on delivery and note any damage on the Bill of Lading

  • Photograph the packaging and product; keep all materials

  • File a damage claim within 14 days via customer support

• How to file a warranty claim

  1. Contact VoltCentre (or your original seller) with your order/invoice number

  2. Provide the scooter’s serial number, clear photos/video, and a description of the defect

  3. Return the item in original or dealer-approved packaging if requested

• Valid proof of purchase

  • Online order number from an authorised isinwheel reseller

  • Sales invoice

  • Dated sales receipt (more than one document may be required)

• Warranty is void if

  • Product is out of warranty, lost, stolen, or complimentary

  • Damage results from water, misuse, collisions, self-modifications, or incompatible accessories

  • Unsupported software/firmware has been installed

  • Sufficient proof of purchase is not provided

  • Product was bought from an unauthorised seller

• Out-of-warranty parts & repairs

  • Replacement parts are available at manufacturer pricing

  • Contact customer support for quotes or repair requests (responses within business hours)