KOOLUX BK6S 4.0

Discover the new KOOLUX BK6S 4.0 – The electric bike that takes you further, faster and more comfortably

Looking for an electric bike with power, range and features that really make a difference? Then the KOOLUX BK6S 4.0 is an obvious choice. This is a powerful upgrade from the previous model BK6S 3.0 – with an even stronger motor, improved battery capacity and a more robust chassis. Perfect for both everyday commuting and weekend adventures, whether you're driving in town or over tougher terrain.

Powerful engine for increased driving pleasure.

The new BK6S 4.0 is equipped with a nominal motor power of 500W, which is twice as much as the predecessor's 250W. This means that you accelerate faster and climb steep slopes more easily – it can handle a full 25° incline without any problems. For those who want an electric bike that feels strong and responsive in all situations, this is a huge boost.

Up to 90 km range with hybrid mode.

Thanks to the upgraded 48V and 13Ah battery, you get a range of up to 90 km depending on driving mode, road surface and weight. You can easily switch between three driving modes – pedal assist, hybrid and purely electric – using the included throttle. It gives you full control over both comfort and energy consumption during your travels.

Foldable design for easy storage.

KOOLUX BK6S 4.0 is designed to fit life in the city. With its foldable design, you can easily fold the electric bike and fit it in the car, on the train or in the hall. Despite its robust frame, the bike weighs only 33.2 kg, which makes it relatively light for its class and easy to handle.

Comfortable ride with damping and large tires.

The front shock absorber combined with the 20-inch pneumatic tires (4.0-inch wide) provides a smooth and stable ride, even on uneven surfaces. The wide tires also increase grip and safety when driving on gravel, rain-soaked bike paths or in low light.

Full control with disc brakes and LCD display.

Two powerful disc brakes – one at the front and one at the rear – give you quick and safe braking. The large LCD display shows speed, battery level, driving mode, and much more, so you always have an overview of your driving. The display also has error codes for quick troubleshooting if necessary.

Smart functions that make a difference.

Unlike the previous model, the BK6S 4.0 has built-in cruise control and an improved electric mode that you easily control via the handlebars. The handlebars are adjustable, and together with the included saddle, you can quickly find an optimal riding position. It is also equipped with an ignition key for added safety and has both front and rear lights.

Built to last and customized for you.

The bike has a high maximum weight of 120 kg and fits users between 160 and 180 cm. The frame is made of durable material, and with an IP54 rating, it can withstand light rain and dirt. It is also provided with CoC documents, which means that it meets European standards for electrical safety and traffic laws.

Perfect for commuting and leisure.

Regardless of whether you are commuting to work or planning a long trip in the countryside, the KOOLUX BK6S 4.0 delivers both power and comfort. With 7 gears, three driving modes and a strong torque of 60Nm, you get a flexible and fun driving experience every time you sit in the saddle.

A worthy upgrade from the BK6S 3.0.

Previous model BK6S 3.0 was already a favorite among our customers - but BK6S 4.0 takes everything a step further. The higher engine power, improved battery capacity, foldable design and improved electric mode make this an obvious choice for those who want more performance, more freedom and more cycling joy.

Summing up – that's why you should choose the KOOLUX BK6S 4.0.

With the KOOLUX BK6S 4.0, you get an electric bike that combines power, range and convenience in a stylish and smart design. The foldable design makes it easy to take anywhere, and with a strong battery and improved motor, you get more freedom in everyday life. Experience the difference - upgrade to KOOLUX BK6S 4.0 today.

Spare parts.

If you need spare parts that are not in our range, do not hesitate to contact us. We offer the possibility to special order the specific spare part you are looking for and give you a cost estimate. Our customer service is always ready to help you find the right solution for your needs and ensure that your product continues to function optimally. We strive to offer the best service for our customers and make sure you get the support you need.

Shipping terms

Free shipping: Applies to orders over SEK 699 throughout Sweden.

Shipping cost: For orders under SEK 699, a shipping fee of SEK 69 is added.

Delivery times

All products: Delivery time is 5–10 working days.

Special orders: For special orders made via email, such as spare parts, a delivery time of up to 20 working days applies.

PO box or home delivery

• For larger products such as electric scooters and e-bikes we offer always home delivery directly to your door, completely free of charge.
• In case of home delivery of electric scooters or e-bikes, it is the customer's responsibility to be available at the specified address during the delivery time. The shipping company will contact you in advance to book an appointment.
• If you instead wish to collect your package via an agent, you need to contact the shipping company in question to make this change.
• For deliveries via Postnord, if the consignment note does not fit in the letterbox, it is placed by your door or in a bag outside your letterbox.

You have full right of withdrawal for 14 days after you receive the item. With us, you also always have a 1-year warranty. Read more about our warranty policy.

Card payment 
We offer card payment with Visa, Mastercard or American Express. 

Swea
With Svea, you can choose an invoice and pay within 30 days, or pay in installments interest-free for up to 12 months. Flexible and safe.

Swish
Pay quickly and securely with Swish. Select Swish at checkout and approve the payment via your mobile with Mobile BankID.

Trustly
With Trustly, you can pay directly from your bank account without a card or registration. Fast, flexible and secure with BankID.

Apple Pay & Google Pay
It is also possible to pay with Apple Pay and Google Pay, which is quick and easy.

PayPal
With PayPal, you can pay and transfer money without having to reveal your payment details and also flexibly choose how you want to pay. 

We are happy to help you with questions or concerns and we always respond within 24 hours. Contact us here.

You have full right of withdrawal for 14 days after you receive the item. Read more about how to proceed in our Return & Refund Policy.

Electric scooter
An electric scooter is considered a bicycle if it has a maximum speed of 20 km/h and a motor with no more than 250 W. However, it is important to note that the limit applies to the continuous (nominal) power - which means that the electric scooter can temporarily have a higher so-called peak power, for example up to 1000 W, as long as the nominal power does not exceed 250 W.

If the electric scooter exceeds 20 km/h in speed or has a motor with more than 250 W nominal power, different rules apply. The next classification is Moped class II and thereafter Moped class I. There are technical requirements, such as braking systems, that must be met for an electric scooter to be classified as a moped.

Essentially, if it reaches up to 25 km/h it is considered as Moped class II, while if the speed exceeds 40 km/h and the motor is stronger than 250 W, it is classified as Moped class I. For Moped Class I, an AM license is required, the vehicle must be registered, and a helmet must be worn. Moped class II requires a driver's license and mandatory use of a helmet. If the electric scooter does not meet the requirements for bicycle, moped class I or II it gets it not to be used on public roads.

Electric bike
For the requirements to apply to an electric bicycle, the motor must be limited to 250 W nominal (continuous) power and only assist the pedaling up to 25 km/h. This means that the engine can temporarily deliver a higher so-called peak power, for example up to 1000 W, as long as the nominal power does not exceed 250 W. The electric bicycle must also be pedaled for the motor to work - so it must not drive on its own without the user's pedaling power.

Deviation from these requirements results in the vehicle being classified as moped, which entails other technical requirements, mandatory registration, driver's license and insurance.

We strongly recommend the use of a helmet, especially if the driver is under the age of 15, although it is not mandatory.

Read our blog posts for more information about which rules apply around electric scooters and electric bikes.