KOOLUX BK10S 500W Foldable Fat Tire E-Bike

4.2 8 online reviews

Koolux

£739.00

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Color: Black

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Conquer city streets, rugged trails, and sandy beaches with ease—the KOOLUX BK10 Foldable Fat Tire E-Bike is your ultimate ride for adventure, commute, or weekend getaways. Designed with versatility, portability, and performance in mind, the BK10 is perfect for riders who crave freedom without compromising comfort or functionality.

Key Features:

3 Riding Modes for Ultimate Flexibility
Switch between pedal assist, pure electric (via throttle), and manual pedaling to suit your riding style and terrain. The Shimano 7-speed gear system offers smooth transitions and effortless climbing.
Fat Tires for All-Terrain Dominance
The upgraded 20x4.0-inch puncture-resistant tires provide maximum stability and control—whether you’re riding on pavement, dirt, sand, or snow.
Powerful Motor & Long-Range Battery
Featuring a 250W high-torque motor (58Nm) and a hidden 48V 13Ah lithium battery, the BK10 delivers speeds up to 25 km/h (or 45 km/h when unlocked) and a range of up to 90 km per charge.
Folds in Seconds for Easy Storage
Lightweight aluminum alloy frame folds down to just 92x50x80 cm, making it easy to transport in your car, RV, or apartment.
Enhanced Comfort and Safety
Ride with confidence thanks to the front suspension fork, dual disc brakes, LED headlight & taillight, and mudguards. Stay informed with a multifunction LCD display showing speed, battery level, and more.

Total Length:	168 cm
Handlebar Height:	96-108 cm
Wheelbase:	110 cm
Standover Height:	82-102 cm
Top Tube Length:	60 cm
Wheel Diameter:	20”
Handlebar Length:	60 cm
Folded Size:	925080 cm
Rider Height:	165-195 cm

Technical Specifications:

Feature	Specification
Motor	250W Hub Motor (58Nm Torque)
Battery	48V 13Ah Removable Lithium-ion
Top Speed	25 km/h (45 km/h unlocked)
Range	35–90 km (22–56 miles)
Drive Modes	Pedal, Pedal Assist, Throttle
Transmission	Shimano 7-Speed Gear System
Tires	20x4.0" All-Terrain, Puncture-Resistant
Brakes	Mechanical Disc Brakes
Suspension	Front Fork Suspension
Display	Multifunctional LCD
Frame	Foldable Aluminum Alloy
Weight	27.7 kg (Net)
Max Load	120 kg / 265 lbs
Charging Time	5–6 Hours
Folded Size	92 x 50 x 80 cm
Rider Height	165–195 cm

Why Choose the KOOLUX BK10 Foldable E-Bike?

Designed for Real-Life Adventures
Whether you're heading out for a day of urban exploration or weekend camping, the BK10 is ready. Its fat tires and powerful motor make it equally capable on trails, slopes, or streets.
Foldable Freedom
Easy to fold and store in seconds—ideal for apartment dwellers, commuters, or adventurers with limited space.
Sleek and Secure Battery System
The fully integrated battery design not only looks sharp, but it also adds security and improves weather resistance. Remove it in seconds for off-bike charging.
Built-In Safety Features
Front and rear LED lights, wheel reflectors, and strong disc brakes ensure you're visible and in control—even during nighttime rides or on slippery paths.
Ready for Anything
Includes essentials like a bike pump, lock, throttle, charger, assembly tools, and spare keys, so you can hit the road from day one

FAQs:

Q: Is the bike street legal in the UK/EU?
Yes, the KOOLUX BK10 complies with local regulations for electric bikes with a 250W motor and 25 km/h max speed (in standard mode).
Q: How long does the battery last?
The battery lasts 35–90 km per charge, depending on terrain, rider weight, and mode used.
Q: Can I unlock the speed limiter?
Yes, for off-road use, the speed can be unlocked up to 45 km/h. Please follow local laws regarding speed limits.
Q: Is it difficult to fold and carry?
Not at all! The lightweight aluminum frame folds quickly and compactly, and the bike weighs just 27.7 kg, making it relatively easy to lift into a car trunk or storage area.
Q: Is the battery removable?
Yes, the 48V 13Ah battery is fully removable for convenient charging anywhere.
Ready to ride into your next adventure?
Get the KOOLUX BK10 today and explore more with comfort, confidence, and style.

What's Included in the Package?

Throttle × 1
Bike Pump × 1
Charger (UK Plug) × 1
Lock × 1
Assembly Tools × 1
Keys × 2

Delivery & Shipping

At WheelTrek, we keep delivery simple and transparent. Please note we currently deliver within the UK only.

Delivery Costs

FREE DELIVERY on all eBikes to UK Mainland addresses.
For orders below £500, a £25 delivery charge applies.

Order Processing

Once you place your order, it takes 1 to 2 working days to process and prepare for dispatch.

Delivery Times

After dispatch, estimated delivery is 3-5 business days (Monday to Friday) under normal conditions.
We will send you the courier name and a tracking number as soon as your order is dispatched, so you can follow your eBike's journey to your door.

Our Carriers

Your eBike is delivered by a trusted, fully tracked UK courier. The exact courier depends on the eBike you order. We will confirm which one is handling your delivery along with your tracking details.

Warranties & Returns

Shopping with us is simple and your rights are fully protected.

Changed your mind?

You have 14 days from delivery to cancel for any reason, then 14 days to send the item back. Return delivery is at your cost, and we refund you in full within 14 days of receiving the eBike back.

Faulty, damaged or not as described?

Contact us within 30 days with a photo and we will arrange free courier collection and a full refund, or a replacement if you prefer. After 30 days, you are still covered for a free repair or replacement.

Warranty

Every eBike comes with a full manufacturer's warranty. If anything goes wrong, one email to us and we handle the claim with the manufacturer for you.

How to start a return

Just email info@wheeltrek.co.uk before sending anything back and we will take care of the rest.

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4.2

8 online ratings

KOOLUX BK10S 500W Foldable Fat Tire E-Bike Review Summary

4.2

8 online ratings

Why Our Customers Love It

This versatile electric bicycle is highly regarded for its blend of performance and portability, offering a powerful riding experience that transitions seamlessly between urban environments and challenging off-road trails. Users appreciate the high-torque motor and robust battery life, which support extended journeys and confident hill climbing on a single charge. The inclusion of wide, shock-absorbing tires paired with a responsive suspension system ensures a consistently smooth and stable ride across diverse surfaces such as sand and gravel. Additionally, its space-saving design allows for effortless storage and transport, while modern integrated features like a smart display and reliable lighting provide significant convenience and safety for everyday use.

Benefits Include

Folding Design: The design allows for easy storage and transport.
Fat Tires: Offers good stability and all-terrain capability for varied surfaces like snow, beaches, mountains, and city streets, while enhancing comfort by absorbing shocks.
Comfortable Ride: Achieved through its front suspension and fat tires, contributing to a pleasant riding experience.
Good Range: Provides a substantial range for commuting, reported between 35-90km, with some models extending up to 120km with pedal assist.
Efficient Motor: Features a 250W (or up to 500W peak) motor that delivers good assistance and power, especially for climbing hills.
Sturdy Build: Described as well-built and robust, capable of supporting rider weight and handling steep hills effectively.
Smooth on Road: Users find it very smooth and enjoyable to ride on paved roads.
Responsive Brakes: Equipped with high-quality front and rear disc brakes that ensure effective and safe stopping power.

Why Our Customers Choose Wheeltrek

FREE & FAST SHIPPING

FREE DELIVERY for all eBikes across UK mainland, ensuring a smooth and easy shopping experience

WARRANTY & RETURNS

All of our products come with a warranty and 14 day hassle free returns giving you complete confidence T&Cs apply

BEST PRICE GUARANTEED

We’ll match any lower price you find to ensure you get the best deal every time T&Cs apply

FLEXIBLE FINANCE PLANS

Make your ride more affordable with PayPal, ClearPay, and Cycle to Work schemes to help spread the cost

EXPERT SUPPORT

Our team helps you find the perfect ride and provides ongoing guidance long after your purchase

TRUSTED PREMIUM BRANDS

We offer premium eBikes from trusted brands carefully selected for quality and performance

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.

Can I use Cycle to Work vouchers on your eBikes?

Yes, we work with various Cycle to Work schemes. Check our Cycle to Work partners page to see which providers we accept. If your provider isn't listed, contact us at info@wheeltrek.co.uk. View our partners: https://wheeltrek.co.uk/pages/our-cycle-to-work-partners

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 eBikes legal in the UK and where are you allowed to ride them?

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

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

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 eBikes batteries take between 3 to 6 hours to fully charge. On a full charge, you can typically expect a range of 30 to help 60 miles depending on factors like terrain, rider weight and level of pedal assistance.

Lorna Waite

My eBike has made my commute easier. It’s really cute and such a lovely design. I actually look forward to getting on it every day as it's so much fun.

★ ★ ★ ★ ★

Commute EX Ladies Electric Bike with 15-inch frame and Samsung battery

Simon Capewell

Buying this has been a game changer and is an absolute pleasure to ride. The service was top notch too as the team were really friendly and professional. I can definitely recommend WheelTrek.