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KOOLUX BK6S 4.0 electric bike (20")
Reference: KOOLUX-BK6S40-BLACK
EAN number: 4774206036142
The BK6S 4.0 is a folding electric bike that perfectly balances performance, comfort, and portability. Equipped with a 48V system and a 13Ah lithium-ion battery, this model offers solid range and convenience, with an easily removable battery for hassle-free charging.
Customer service
by phone, e-mail and consultations live - in the store
Convenient delivery of goods
all courier services - all over Europe and almost all over the world
Test before buy
Try before you buy
EU warranty
24-month warranty and post-warranty service
Secure payment
Trusted payment methods
Electric transport insurance
protect yourself and your vehicle with insurance
Free pickup
collect goods for free in our store
Parts and service
parts, accessories and service-repair services
Design speed (km/h)
45km/h
Nominal power of the engine/motors (W)
750W
Wheel size (inch')
20inch'
Battery capacity (Ah)
13Ah
Range (km)
90km
Vehicle weight (kg)
34kg
BK6S 4.0 – Compact, Powerful & Comfortable Folding E-Bike
The BK6S 4.0 is a folding electric bike that perfectly balances performance, comfort, and portability. Equipped with a 48V system and a 13Ah lithium-ion battery, this model offers solid range and convenience, with an easily removable battery for hassle-free charging.
Riding the BK6S is a smooth experience thanks to the front suspension fork and seatpost shock absorber, making it ideal even on uneven terrain. The 20-inch fat tires (4 inches wide) provide great grip, comfort, and all-terrain capability—whether you’re in the city or off-road.
Its foldable design makes it easy to store or transport, and despite its durable frame, it weighs just around 25.5 kg, making it practical and user-friendly. It supports up to 120 kg of load, offering reliability for both daily commuting and weekend rides.
Often compared to models like the OneSport OT08 or Engwe L20, the BK6S 4.0 stands out with its affordable price point and strong value for money. It’s a great choice for anyone seeking a compact, comfortable, and efficient e-bike for everyday use.
Features
Design speed (km/h)
45km/h
Nominal power of the engine/motors (W)
750W
Wheel size (inch')
20inch'
Battery capacity (Ah)
13Ah
Maximum load (kg)
120kg
Charging time (h)
6h
Range (km)
90km
Vehicle dimensions (mm)
1820*670*1150mm
Package dimensions (mm)
1360*650*1000mm
Vehicle weight (kg)
34kg
Brake system
Disc brakes
Battery type
Li-ion
Battery voltage (V)
48V
Peak motor power (W)
1000W
Tyre type
With inner tube
Drivetrain
Rear
Speed limiter
Yes
Speed with limiter (km/h)
25km/h
Battery capacity (Wh)
624Wh
Lights
Front
Smart APP
No
Seat adjustable
Yes
Design speed (km/h)
45km/h
Nominal power of the engine/motors (W)
750W
Wheel size (inch')
20inch'
Battery capacity (Ah)
13Ah
Maximum load (kg)
120kg
Charging time (h)
6h
Range (km)
90km
Vehicle dimensions (mm)
1820*670*1150mm
Package dimensions (mm)
1360*650*1000mm
Vehicle weight (kg)
34kg
Brake system
Disc brakes
Battery type
Li-ion
Battery voltage (V)
48V
Peak motor power (W)
1000W
Tyre type
With inner tube
Drivetrain
Rear
Speed limiter
Yes
Speed with limiter (km/h)
25km/h
Battery capacity (Wh)
624Wh
Lights
Front
Smart APP
No
Seat adjustable
Yes
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Nominal power of the engine/motors (W)
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Nominal power of the engine/motors (W)
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Nominal power of the engine/motors (W)
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Design speed (km/h)
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Nominal power of the engine/motors (W)
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Design speed (km/h)
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Nominal power of the engine/motors (W)
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Wheel size (inch')
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Range (km)
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Design speed (km/h)
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Nominal power of the engine/motors (W)
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Wheel size (inch')
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Battery capacity (Ah)
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Range (km)
135km
Vehicle weight (kg)
37.6kg
The BK6S 4.0 is a folding electric bike that perfectly balances performance, comfort, and portability. Equipped with a 48V system and a 13Ah lithium-ion battery, this model offers solid range and convenience, with an easily removable battery for hassle-free charging.