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KOOLUX BK6S Pro Folding Electric Bike

Shop the KOOLUX BK6S Pro folding electric bike with fat tyres, dual batteries and suspension for commuting and longer rides with added comfort.

£929.00
£1,159.00Save £230.00
3 payments of £309.67 at 0% interest withklarna
Delivered by Thursday if you order within 2 hrs 54 min
  • SpeedSPEED15.5 Mph
  • RangeRANGE93 Miles
  • MotorMOTOR250 W
  • BatteryBATTERY23.4 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

Product Overview

The KOOLUX BK6S Pro Folding Electric Bike is a practical 20 inch fat tyre e-bike built for riders who want comfort, range and everyday versatility. Its folding design makes it easier to store, while the dual-battery setup supports longer journeys for commuting and leisure riding.

With 20×4.0 inch Kenda tyres, front fork shock absorption and seat suspension, this bike is designed to deliver a more cushioned ride across city streets and mixed terrain. Shimano 7-speed gearing and hydraulic disc brakes add useful control for confident day-to-day use.

Key Features

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

  • 250W brushless motor for smooth electric assistance
  • 48V 13Ah + 48V 10.4Ah dual batteries for extended riding distance
  • Up to 150 km (approx. 93 miles) range for longer commutes and leisure rides
  • 20×4.0 inch Kenda tyres for added grip and a stable ride feel
  • Front fork with shock absorption + seat suspension for improved comfort
  • Front and rear hydraulic disc brakes for reliable stopping control
  • 7-speed Shimano gears for flexible riding across different routes
  • LED headlights and taillights with LCD display for visibility and ride information

What to Expect

You can expect a steady, comfortable ride with a road-legal top speed of 25 km/h and the benefit of dual-battery endurance for longer distances. The fat tyres, suspension and gearing make it well suited to daily travel, relaxed weekend rides and varied urban-to-trail routes.

What’s Included

  • Electric bike
  • Battery
  • Charger
  • User manual

Assembly & Setup

The KOOLUX BK6S Pro is designed for straightforward setup. Once delivered, follow the user manual for assembly, charging and basic checks before your first ride.

Support After Purchase

After your purchase, keep your bike maintained with regular checks on tyres, brakes, battery charge and key components to help it perform at its best over time.

Technical Specifications

Motor 250W brushless motor
Battery 48V 13Ah + 48V 10.4Ah (dual batteries)
Range Up to 150 km (approx. 93 miles)
Top Speed 25 km/h road‑legal
Charging Time 5–7 hours
Frame Material Iron
Wheel Size 20×4.0 inch (Kenda tires)
Suspension Front fork with shock absorption + seat suspension
Brakes Front and rear hydraulic disc brakes
Gears 7-speed Shimano
Max Load 150 kg (265 lbs)
Dimensions 180×60×125 cm
Package Size 151×30×84 cm
Net/Gross Weight 38.6 kg / 45.6 kg
Max Gradient 25°
Water Resistance IP54

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.

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)
star0star1star2star3star4
"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)
star0star1star2star3star4
"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)
star0star1star2star3star4
"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)
star0star1star2star3star4
"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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