BK-U3 City E-Bike
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2-Year Warranty
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Pre-order Items: Shipping on September 30
More Range for Everyday Freedom
A removable 720Wh battery gives the BK-U3 the energy reserve needed for repeated daily rides and longer weekend routes. With a maximum range of up to 175km under suitable test conditions, the benefit is not simply riding farther—it is having to think about charging less often during normal use.
Pedal Support That Follows Your Effort
The torque sensor responds to actual pedalling force, helping the motor deliver support in a more natural and controlled way. Combined with 55Nm of torque, it makes city starts, gradual climbs and changing riding speeds feel smoother and easier to manage during everyday riding.
Comfort Across Changing Urban Surfaces
The BK-U3 uses a 100mm suspension fork, suspension seatpost and wide 2.8in tyres to improve comfort across uneven streets, cycle paths and suburban routes. The adjustable handlebar angle also allows riders to find a more relaxed position for longer daily journeys.
Predictable Braking for Daily Riding
Hydraulic disc brakes provide progressive control in city traffic, on downhill sections and during repeated stops. Combined with reflective tyre details and integrated lighting, the BK-U3 is equipped around the needs of everyday urban and suburban riding rather than outright speed.
Easy to Live With, Day After Day
A low step-through frame makes mounting and dismounting easier, while the rear rack, mudguards and removable battery support regular commuting and errands. With an adjustable fit designed for riders around 165–195cm, the BK-U3 is intended to work as an everyday bike rather than a specialist weekend machine.
Comfort Built Into Every Ride.
Easy access, smooth assistance and fewer charging stops help make the BK-U3 a practical part of your daily routine.
720Wh for More Everyday Flexibility.
Battery capacity matters even when you are not planning an epic ride. For everyday commuters, it simply means more journeys before you need to plug in again, with the removable design making home or workplace charging easier. The BK-U3 offers a combined range of 120–150 km on a 5-hour charge, with a maximum range of 175 km. This means that if you ride 10 km every day, you’ll only need to charge it once every two weeks.
Assistance That Follows Your Effort.
Torque sensing helps the motor respond to your actual pedalling input rather than simply switching assistance on, creating a more natural riding experience during everyday starts and changing speeds.
With a maximum torque of 55Nm, the BK-U3 is built to deliver real-world strength where it matters most—not just top speed, but the powerful, reassuring support you feel every time you ride. From a quick, smooth start at traffic lights to climbing a garage ramp, bridge, or gentle hill, the motor helps you move off easily without heavy pedaling.
Easy to Get On. Easy to Live With.
A step-through frame makes frequent starts and stops simpler, while the rear rack, mudguards, integrated lights and removable battery are already built around the demands of regular commuting.
Braking Confidence for Everyday Riding.
Hydraulic disc brakes provide progressive braking control through stop-start traffic, downhill stretches and changing road conditions—exactly where predictable control matters most on a daily e-bike.
Comfort From More Than Just the Fork.
The 100mm front suspension works alongside the suspension seatpost and wide 2.8in tyres, helping soften repeated bumps through more than one contact point on rougher everyday roads.
Features and Details
NFC Access & TFT Display
Unlock your BK-U3 quickly with NFC and keep essential ride information clearly in view. The centrally positioned TFT display makes speed, assistance level and key riding data easy to check at a glance.
Shimano 7-Speed Gearing
7 mechanical gears let you fine-tune your pedalling for starts, flat roads and moderate climbs, giving you more control over cadence alongside the bike's electric assistance.
Adjustable Handlebar Angle
Adjust the handlebar angle to suit your preferred riding position—more upright for relaxed commuting or slightly more active for longer rides. It also makes shared family use easier.
Adjustable Seatpost
An adjustable suspension seatpost helps absorb repeated bumps directly beneath the rider, adding another layer of comfort on uneven streets, longer commutes and everyday urban routes.
Wide 27.5 × 2.8in Tyres
The wider tyre profile provides a planted, comfortable feel across tarmac, cycle paths and changing urban surfaces, while reflective details add useful everyday visibility.
Ready-to-Use Rear Rack
The integrated rear rack gives you a practical base for panniers and everyday cargo, making it easier to carry work bags, shopping or leisure gear without loading everything onto your back.
Motor Torque
Nm
Maximum Load
kg
Motor Torque
Nm
Maximum Load
kg
Mileage
- km
Battery
V Ah
Waterproof Rating
IPX
What's in the package?
Ebike x 1
Manual x 1
NFC Card x 2
Bicycle Pump x 1
Lock x 1
3A Charger x 1
Installation Tools x 1
Key x 2
Specifications
Technical Specifications
- Motor Hub Motor (250W)
- Sensor Torque Sensor
- Battery 48V 15Ah Lithium-ion
- Charger 3A Fast Charger
- Display TFT Smart Display
- Maximum Speed 25 km/h
- Max Range 175km
- Climbing Angle 12 Degrees
- Pedal Assist 5-Level PAS
- Transmission Shimano 7-Speed Gear System
- Braking System Hydraulic Disc Brakes
- Suspension Lockable Front Suspension Fork
- Tires 27.5" x 2.8" Puncture-resistant Pneumatic Tires
- Frame Material Durable Aluminum Alloy
- Net Weight 29.5 kg
- Max Payload 150 kg
- Waterproof Rate IPX5
- Torque 55Nm
Move Through the Day More Easily.
Wide tyres, front suspension and a suspension seatpost help improve comfort when urban streets and cycle routes are less than perfectly smooth.
View Ride Data
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Bike Checkup
FAQ
Will I really get 175km from one charge?
Up to 175km is a maximum range figure under favourable test conditions, not a guaranteed real-world result. Rider weight, temperature, hills, wind, tyre pressure and assistance level can all reduce actual range.
Can I use it in wet weather?
The bike includes mudguards, lighting and hydraulic brakes for practical daily riding. We would not describe it as waterproof unless a confirmed IP rating is available.
What rider height does it suit?
The recommended range is approximately 165–195cm, although fit also depends on individual proportions and preferred riding position.
Which bike is right for you?
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1
-
Battery
LG 48V15Ah 720Wh
48V 15Ah (720Wh)
36V 13Ah 468Wh
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Range
120-150 km max.175 km
120-150 km max.175km
150-180 km
-
Motor
Rear hub
Mid drive
Mid drive
-
Torque
55 Nm
120 Nm
75 Nm
-
Pedal Assist Sensor
Torque sensor
Torque sensor
Torque sensor
-
Brake
Hydraulic brakes
Hydraulic brakes
Hydraulic disc brakes
-
Charging Time
5-6 h
2 hours
4-5 hours
-
Tires
27.5*2.8 inch
27.5*2.2 inch
27,5 * 2,2 Zoll
-
Weight
29.5 kg
29.5 kg
27,3 kg
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Recommended Rider Height
165-195 cm
170-190 cm
165–190 cm
