Name: KOOLUX BK6S Folding Fat Tyre Electric Bike
Brand: Koolux
SKU: 4859
Price: 649 GBP
Availability: InStock

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KOOLUX BK6S Folding Fat Tyre Electric Bike

KOOLUX BK6S Folding Fat Tyre Electric Bike

Shop the KOOLUX BK6S folding fat tyre electric bike for commuting and mixed-terrain rides, with 250W power, 7-speed gears and a 56-mile range.

£649.00

£899.00Save £250.00

3 payments of £216.33 at 0% interest with klarna

Select Color: Red

Delivered by Thursday if you order within 3 hrs 2 min

SPEED15.5 Mph
RANGE56 Miles
MOTOR250 W
BATTERY15 Ah

Road Legal

See full UK Road Legal.

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UK Stock - Fast and free delivery across the UK from Birmingham.

Road Legal - Shop with confidence using clear guidance on road-legal UK e-bikes.

Warranty - Includes a 12-month manufacturer warranty for extra peace of mind.

UK Support - Helpful UK support before purchase and after your bike arrives.

Need help? Chat with us for quick clarifications

Description

Product Overview

The KOOLUX BK6S Folding Fat Tyre Electric Bike is a practical choice for riders who want electric assistance, compact storage and confident mixed-terrain capability. Its folding design and 20″ x 4.0″ fat tyres make it well suited to everyday riding, weekend trips and riders with limited storage space.

Powered by a 250W rear hub motor and a 48V 15Ah lithium battery, the BK6S delivers assisted riding up to 15.5 MPH (25 km/h). With 7-speed gearing and disc brakes, it offers a balanced ride for varied routes and everyday use.

Key Features

Here are some of the standout features of the KOOLUX BK6S 250W 20″ Fat Tyre Folding E-Bike:

250W rear hub motor for smooth electric assistance
48V 15Ah lithium battery mounted in the down tube
Folding design for easier storage and transport
20″ x 4.0″ fat tyres for added grip and stability
7-speed gearing for flexibility across different riding conditions
Disc brakes for reliable stopping control
Up to 56 miles range per charge for longer rides

What to Expect

The KOOLUX BK6S is built for practical assisted riding with a comfortable, steady feel from its fat tyres and a useful top speed of 15.5 MPH (25 km/h). It is a good fit for commuting, leisure rides and mixed-terrain cruising, with a charging time of 5-6 hours.

What’s Included

Electric bike
Battery
Charger
User manual

Assembly & Setup

The bike is designed to be straightforward to get ready for riding. Once charged, the folding frame, battery system and core components can be checked and set up before your first ride.

Support After Purchase

After your purchase, you can expect clear product support for setup and everyday use, helping you get the most from your KOOLUX BK6S.

Technical Specifications

Model Number	KOOLUX-BK6S
Gears	7-Speed
Frame Material	Steel
Power Supply	Lithium Battery
Wheel Size	20″
Tyre Width	20*4”
Braking System	Disc Brake
Battery Capacity	15Ah
Charging Time	5-6 hours
Range per Charge	56 Miles
Motor Position	Rear Hub Motor
Torque	30-50 Nm
Battery Position	Down Tube
Max Speed	15.5 MPH (25 km/h)
Battery	48V 15Ah Lithium Battery
Max Load	120kg
Motor Power	250W
Brake	Disc
Net Weight	33.2kg

UK Road Use & Legal Information

Road Legal (EAPC)

These bikes are built to comply with UK Electrically Assisted Pedal Cycle (EAPC) regulations, meaning they can be used on public roads and cycle paths without registration, tax, or a licence. Motor assistance is limited to 250W and cuts off at 15.5 mph (25 km/h). You can read the official requirements on the UK government website.

Configurable Models

Some bikes are supplied in a restricted, road-legal setup but are capable of higher performance. If modified or used beyond EAPC limits, they may no longer qualify as road legal and could be classified as motor vehicles under UK law. This may require registration, insurance, and a driving licence. For full guidance, please refer to the official UK e-bike rules.

Private Use Only

Certain high-performance models are intended strictly for private land use with the landowner’s permission. These bikes do not meet EAPC standards and cannot be used on public roads, cycle paths, or pavements unless fully registered and insured in accordance with UK law.

If you're unsure which option is right for you, our team is here to help. Feel free to contact us before purchasing for clear guidance and peace of mind.

Returns & Delivery

Fast UK Delivery

We offer fast and reliable delivery across the UK, with most bikes dispatched within 24–72 hours and usually arriving in 3–7 working days. Every order is shipped with trusted couriers and includes tracking, as explained in our payment and shipping page, so you can follow your delivery from dispatch to arrival.

Shipping Information

Standard UK shipping is free on most bikes. Orders placed after 12 PM may ship the next working day, and some remote areas may have extra delivery charges. If a delivery is missed or returned after failed attempts, additional shipping fees may apply, as detailed in our shipping policy.

14-Day Returns

You can return your bike within 14 days of delivery as long as it is unused, in its original condition, and includes all accessories, manuals, and packaging. Please contact us first before sending anything back, following the steps outlined in our returns and refunds policy.

Refund Policy

Once your returned bike is received and inspected, approved refunds are issued to your original payment method within 2–5 business days. If the item arrives faulty, damaged, or incorrect, we cover return shipping and provide a full refund, as explained in our refund guidelines.

Customer Reviews

See why riders choose BikTron for value, delivery speed, and after-sales support.

Jakob Russ (London)

"Great experience with Biktron.uk. Fast delivery, excellent customer service, and the bike quality is outstanding for the price. Everything was smooth from order to delivery. Highly recommend!"

Amelia R. (Manchester)

"Customer support was fantastic and helped me pick the right frame size within an hour. Klarna instalments made the purchase stress-free, and the bike’s motor is quiet yet powerful. I’ve already done several long rides and the range is better than expected."

Jacob S. (Bristol)

"My courier was delayed by a day, but BikTron kept me fully informed and even followed up to check delivery. The bike handles hills far better than I imagined and feels solid on longer rides. Overall, very happy with the purchase and the service."

Sophie M. (Leeds)

"Ordering was simple and I loved the clear specs and photos online. The bike arrived well protected, and setup took less than 20 minutes. It rides beautifully — smooth, fast, and stable — and I’m already recommending BikTron to friends who want great value."

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