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Isinwheel U3 Folding Electric Bike
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TrailSurge is a UK company and VAT registered too: Company No. 16935369 · VAT No. 521226239.
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Trail Surge Ltd · Unit 62, Centenary Business Centre, Nuneaton, CV11 6RY
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TrailSurge Warranty+
1 year of cover UK support
Worth £159 Included
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What’s covered
Frame, forks, motor, controller, battery, charger and factory-fitted electrical and mechanical parts.
Cover & exclusions
Normal wear, accidental damage, misuse and unauthorised modifications are generally excluded.
How to claim
Contact our UK team with your order number and a few photos.
Manufacturer warranty · iSinwheel
Cover varies by model. Contact us for details.
Separate manufacturer terms apply. Warranty periods are not added together.
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Description
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Folding frame | Front suspension | 16-inch pneumatic tyres
The isinwheel U3 Folding Electric Bike combines compact practicality, comfortable riding and responsive electric assistance. Featuring a 250W rated motor, 36V 7.8Ah battery, front suspension and 16” pneumatic tyres, the U3 is designed for everyday commuting, convenient urban travel and relaxed leisure riding, with a folding frame for easy storage and transportation.
Smooth & Responsive Electric Assistance
The U3 features a 250W rated brushless motor with up to 500W peak output, providing responsive electric assistance for everyday journeys and moderate inclines. Adjustable assistance settings allow riders to tailor the level of support, delivering a comfortable and adaptable riding experience across suitable routes.
Compact & Convenient Folding Design
Built around a durable alloy steel folding frame, the U3 offers practical portability without compromising everyday functionality. Its compact folding mechanism and integrated carrying handle make it convenient for storage at home, in smaller spaces or transportation in a car boot.
Efficient 36V Lithium-Ion Battery
Powered by a 36V 7.8Ah (280.8Wh) lithium-ion battery, the U3 offers a manufacturer-advertised riding range of up to 35 miles under optimal conditions. Designed for everyday convenience, its efficient battery system supports commuting and recreational cycling, with a typical charging time of approximately 2–3 hours.
Comfortable Front Suspension & Reliable Braking
Equipped with adjustable front suspension and 16” x 1.75” pneumatic tyres, the U3 helps absorb bumps and vibrations for a smoother riding experience. Front and rear disc brakes provide controlled stopping performance, enhancing rider confidence across urban roads and suitable cycling paths.
Practical Technology & Everyday Versatility
The U3 features an easy-to-read LCD display, providing essential riding information and convenient control of its electric assistance system. Integrated LED front and rear lighting improves visibility, while adjustable handlebars and a cushioned saddle help deliver personalised comfort for commuting and leisure riding.
UK Road Use Compliance
Before riding the U3 on UK public roads or cycle paths, confirm that the exact supplied motor rating, assistance cut-off speed and throttle configuration comply with UK EAPC regulations.
Specifications
| Brand | Isinwheel |
|---|---|
| Motor Power | 250W |
| Battery | 36V 7.8Ah |
| Top Speed | 15.5 MPH |
| Max Range | 35 MILES |
| Charging Time | 2-3 Hours |
| Wheel Size | 16 × 1.75-inch |
| Brakes | Front/Rear Hydraulic Brakes |
| Gears | Single-Speed |
| Bike Weight | 23.3 KG |
Size & Rider Fit
Check rider measurements and sizing before you order.
More measurements & dimensions
- Standover height
- 50.8 cm (20")
- Handlebar height
- 94–111 cm (37–43.7")
Sizes are a guide. Rider proportions, footwear and setup can affect fit.
What’s Included in the Box?
1 x Isinwheel U3 Folding Electric Bike
1 x Charger
1 x Tool Kit
1 x User Manual
Assembly Information
Assembly Video
Watch the assembly guide below before first setup.
Spare Parts for This Model
We stock a range of spare parts in the UK and can source additional components for this model. Contact our team to check prices, compatibility and availability.
