BK28 Fat Tire Electric Bike
BK28 Fat Tire Electric Bike
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TüV and CE certified
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2-year warranty
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More reserves when the path gets more demanding
The BK28 is not built to impress on the spec sheet, but to ride more confidently on demanding trails. The large 1200 Wh battery gives you more security for longer distances, headwinds, climbs, and more challenging riding conditions. This allows you to plan more relaxed, think less about recharging, and maintain assistance even when a conventional e-bike would quickly lose reserves on longer or rougher roads.
Made for paths that are not perfectly paved every day
Whether it's a gravel section, a bad side road, a forest path, or a commute with changing surfaces: the BK28 feels at home where many everyday bikes quickly appear unsettled. The wide 20 x 4.5 inch tires provide more contact surface and a more substantial riding feel. This particularly helps riders who are looking for more calmness, more directional stability, and less uncertainty on loose, uneven, or slightly uphill routes.
More comfortable on long and rough rides
Front and rear suspension help to better absorb shocks and make the riding experience noticeably smoother on rougher roads. This is pleasant not only on gravel but also on cobblestones, poorly patched roads, or longer weekend rides. Precisely because the BK28 is designed as a stable, heavier e-bike, the rider benefits from handling that feels more controlled, substantial, and less nervous.
Safe braking when weight and terrain demand more
A stable e-bike needs brakes you can rely on. That's why the BK28 is equipped with hydraulic Tektro disc brakes. They give you a more consistent, controlled braking feel – especially when speed, weight, gradient, or changing terrain demand more attention. For many riders, this is a crucial difference in everyday life: not just being able to ride, but also feeling safe when decelerating.
Practical in everyday life – not just strong on paper
The BK28 combines its large battery with a practical usage logic for everyday life. The battery is removable, which makes charging more flexible. NFC unlocking, app connectivity, and the display of navigation instructions bring together functions that can be truly helpful in daily use. This creates not an overloaded technical product, but an e-bike that combines range, control, and comfort with useful details for real everyday life.
More range reliability
The 1200 Wh battery makes the BK28 a compelling choice for riders who don't want to recalculate their range on every trip. Especially on ascents, against headwinds, or on longer routes, it's reassuring to have more reserve. This creates flexibility in everyday life and makes weekend trips easier to plan.
Reliable braking feel
Tektro hydraulic disc brakes are a good match for the character of the BK28. They support more consistent, reliable deceleration and inspire more confidence, especially with heavier e-bikes. On descents, in changeable weather, or on rough roads, this creates a braking feel that riders perceive as reassuring, not only objectively but also subjectively.
Comfort that truly relieves
Front and rear suspension help to better absorb shocks and make longer rides more comfortable. This is just as relevant on cobblestones as it is on poor side roads or light forest paths. Anyone who frequently rides on varying surfaces will notice the difference not only technically, but above all physically.
Thoughtful in everyday life
The BK28 not only offers strength and stability, but also a usage logic that matters in daily use. The battery is removable, making charging more flexible. NFC, app connectivity and navigation instructions on the display complement the riding experience where comfort comes not from pretty words, but from practical details.
Features and details
Puncture-proof 4.5-inch tires
The puncture-proof 4.5-inch tires provide a more reassuring feeling on longer distances and more difficult terrain. They support stability, riding comfort, and everyday safety all at once – especially where gravel, poor roads, or loose surfaces are more common.
Push assist up to 6 km/h
The push assist up to 6 km/h is particularly useful when the bike has to be pushed on ramps, in driveways or in narrow places. Especially with a heavier e-bike, this makes handling noticeably more pleasant.
Integrated front light
The integrated front light ensures better visibility at dusk and in low light conditions. It is permanently installed and always available, so you can cycle more safely and relaxed on darker routes.
Multi-function display
The clear display shows all important riding data at a glance – including speed, assistance level and battery charge. This way, you stay in control without constantly being distracted while riding.
Comfort-oriented saddle
The wide, supportive saddle with a 44 x 15 cm seating surface provides more comfort on longer rides and uneven terrain. It helps reduce pressure points and makes sitting for extended periods noticeably more pleasant.
Hydraulic Tektro Brakes
Hydraulic Tektro disc brakes perfectly match the character of the BK28. They provide a more controlled braking feel and offer greater safety and confidence while riding, especially with higher weight, on descents, or on changing surfaces.
NFC instead of traditional key operation
NFC unlocking allows the BK28 to be started quickly and easily. This is more comfortable in everyday use than a purely mechanical solution and fits well with an e-bike that combines modern use with practical operation.
What is included in the package?
Electric bike including battery x 1
User manual x 1
NFC card x 2
Bicycle pump x 1
Bicycle lock x 1
4.0A charger x 1
16-in-1 multi-tool
Battery key x 2
Specifications
Technische Spezifikationen
- Battery 48V 25Ah (1200Wh) Lithium-ion battery
- Motor 250W hub motor (70 Nm torque)
- Range 80–100 km
- Max Speed 25 km/h
- Brakes Tektro hydraulic disc brakes
- Tires 20 × 4.5 inch puncture-proof fat tires
- Display Multifunction display with NFC unlock and app connectivity
- Suspension Suspension fork + rear suspension
- PAS levels 5 levels (1: 6 km/h, 2: 10 km/h, 3: 15 km/h, 4: 20 km/h, 5: 25 km/h)
- Walk Assist Twist throttle with 6 km/h walk assist, limit cannot be removed
- Gears 7-speed gear system
- Frame Aluminum alloy frame
- Water protection class IP54
- Charging time 5–6 hours (4.0A fast charger)
- Climbing ability Up to 25°
- Max Load 120 kg
- Net weight 47.8 kg
- Gross weight 58 kg
Geometrie
- A Overall length 184 cm
- B Handlebar height 119 cm
- C Wheelbase 122 cm
- D Standover height 88 cm
- E Saddle length 44 cm
- F Wheel diameter 20 in
- G Handlebar width 73 cm
- Recommended height 173–195 cm