• BK6S 4.0 folding electric bike for UK commuting
  • Lightweight folding e-bike with 750W motor
  • BK6S 4.0 e-bike folded for easy storage
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Koolux BK6S 4.0 750W High-End Folding E-Bike

Koolux BK6S 4.0 750W High-End Folding E-Bike

4.2 6+ online reviews

Koolux

£739.00 GBP
£739.00 GBP
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Color: Black

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The BK6S 4.0 750W High-End Folding E-Bike is designed to solve one of modern urban life’s biggest challenges: efficient, flexible, and cost-effective transportation. Whether you’re navigating busy city streets, commuting to work, or exploring weekend trails, this powerful yet lightweight folding e-bike delivers performance without compromise.

Ideal for daily commuters, adventure seekers, and riders with limited storage space, this e-bike folds neatly for easy transport on trains, in car boots, or compact flats. Its robust motor and rugged design also make it suitable for electric mountain bike UK trails, giving riders the freedom to move seamlessly between city and off-road terrain.

Unlike standard foldable bikes, the BK6S 4.0 combines high torque power, extended range, and durable components — making it one of the best electric foldable bikes UK riders can rely on in 2026.

Key Features

  • Powerful 750W high-performance motor for hills and acceleration
  • Compact, folding frame for easy storage and transport
  • Long-range battery ideal for an e-bike for commuting
  • Fat tyres for stability on roads, gravel, and trails
  • Advanced suspension for comfort on rough UK terrain
  • LCD display with pedal-assist modes
  • Designed to meet UK road legal electric bike requirements when configured correctly

Technical Specifications

Feature

Specification
Motor 750W High-Torque Motor
Battery Removable Lithium Battery
Frame Folding Aluminium Alloy
Tyres Fat Tyres – All Terrain
Suspension Front Shock Absorption
Display LCD Smart Display
Brakes Dual Disc Brakes
Usage Urban, Trails, Commuting
Foldable Yes
Weight Lightweight Folding Design

Why Choose the BK6S 4.0 750W Folding E-Bike?

If you’re searching for the best electric bikes UK 2026, the BK6S 4.0 stands out for its rare combination of power, portability, and versatility. Many folding e-bikes sacrifice performance — this one doesn’t. It outperforms competitors with its stronger motor, trail-ready tyres, and commuter-friendly folding frame, making it one of the best e-bikes for commuting UK riders will trust long-term.

FAQs

Is this e-bike suitable for daily commuting?
Yes, it’s designed as a reliable e-bike for commuting, offering comfort, speed, and easy storage.

Can it handle UK trails and uneven roads?
Absolutely. Its fat tyres and suspension make it ideal for electric mountain bike UK trails.

Is it easy to store in small spaces?
Yes, the folding design makes it perfect for flats, offices, and car boots.

UK Road Legal Disclaimer

This e-bike can be UK road legal when configured in accordance with EAPC regulations (motor output limits, speed restrictions, and pedal-assist use). Always check local UK regulations before riding on public roads.

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4.2

6+ online ratings
The summary star rating & review is based on aggregated reviews of this product across the web. It cannot be altered by the merchant and can be verified by emailing support@onereview.app.

Koolux BK6S 4.0 750W High-End Folding E-Bike Review Summary

4.2

6+ online ratings
The summary star rating & review is based on aggregated reviews of this product across the web. It cannot be altered by the merchant and can be verified by emailing support@onereview.app.

Why Our Customers Love It

This electric bike is highly regarded for being a fun, flexible, and capable option that offers excellent value. It provides sufficient power to easily manage hills and longer journeys, ensuring a comfortable ride. The design allows for convenient portability and storage, making it suitable for various lifestyles. Its robust construction and versatile features contribute to a reliable and enjoyable riding experience for both commuting and leisurely adventures.

Benefits Include

  • Budget-Friendly Value: Offers specifications typically found in more expensive models.
  • Powerful Motor: The 500W or 250W motor provides significant assistance for hills and quick acceleration.
  • Long Battery Range: A high-capacity battery enables extensive rides, covering up to 90km on a single charge.
  • Foldable Design: The frame folds easily, enhancing portability and simplifying storage in compact spaces or during transport.
  • All-Terrain Tires: Fat 20x4.0” (or 20x3.0") tires deliver superior grip and stability across diverse terrains, including gravel, sand, snow, and urban roads.
  • Comfortable Ride: Features like a front suspension fork and fat tires absorb impacts, ensuring a smooth and stable journey.
  • Reliable Braking: Equipped with effective dual disc brakes for consistent and strong stopping power in varied conditions.
  • Throttle Included: Provides both pedal-assist and throttle options for flexible riding preferences.
  • Durable Construction: Built with a sturdy aluminum alloy frame, contributing to its longevity.
  • UK/EU Road Legal: Complies with road regulations when operating within the 250W/25km/h limits.
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Have a question? Our team is ready so just reach out.

We’re here to help with all your questions big or small.

Check out some of our most common Q&As to get started.

What is your return policy?

Your satisfaction means everything to us. To request a return, simply email info@wheeltrek.co.uk within 14 days of receiving your order. Please ensure the item is unused, with tags attached and in its original packaging and return it within the 14-day window.

For full details,
visit: https://wheeltrek.co.uk/pages/return-and-refund-po….

Refunds can take between 5-10 days.

How quickly can I receive my order?

We aim to process and dispatch in-stock orders within 1–2 working days.

Delivery typically takes 3–5 working days. Orders over £500 get FREE UK
mainland delivery.

Timelines may vary by brand. Tracking is emailed within 24 hours of dispatch. We only ship to UK addresses.

Be sure to report any damage within 14 days to info@wheeltrek.co.uk

Are e-bikes legal in the UK and where are you allowed to ride them?

Yes, e-bikes that meet EAPC (Electrically Assisted Pedal Cycle) regulations
are legal and can be ridden without a licence, insurance or vehicle tax.

e-bikes can be used on public roads, cycle paths, and anywhere
regular bicycles are allowed but not on pavements.

Do I need a licence to ride an e-scooter?

Privately owned e-scooters are currently illegal on public roads but rental
e-scooters require at least a provisional driving licence.

Do you offer warranties and after sales support?

Yes absolutely! All our products come with a manufacturer’s warranty and our
customer service team is here to assist with any issues.

How long does it take to fully charge an e-bike battery and how far can you travel?

Charging times vary depending on the model and battery capacity but most e-bike batteries take between 3 to 6 hours to fully charge. On a full charge, you can typically expect a range of 30 to 100 miles depending on factors like terrain, rider weight and level of pedal assistance.

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