KOOLUX BK6S 4.0 750W High-end version Folding E-Bike

Engineered for extended range and rugged performance, the KOOLUX BK6S PRO folding electric bike redefines what a compact eBike can do. Built with a durable frame and foldable design, it’s perfect for both daily commutes and weekend getaways. What sets the BK6S PRO apart is its dual-battery setup featuring a 48V 13Ah integrated frame battery and an additional 10.4Ah rack battery—offering an impressive range of up to 150 km on a single charge. Powered by a high-torque 750W motor and equipped with Shimano 7-speed gearing and front fork suspension, this fat tire electric bike delivers comfort, power, and adaptability on every terrain. Whether you’re cruising through the city or exploring off-road trails, the BK6S PRO is built to go the distance.

Battery Type	Lithium lon Power Battery
Battery capacity	48V 13Ah
Charging time	6.5-7 hours
Brake system	Front & Rear Disc Brake
Climbing	25°
Tire	20 Inch Tire
Waterproof	IP54
Max load	120KG (264LBS)
N.W/G.W	34.2/43kg
Package size	93*55*76CM
Unfloding size	182*60*110CM

Key Feature of KOOLUX BK6S 4.0 750W High-end version Folding E-Bike

750W Motor Power with Confident Hill Support

The KOOLUX BK6S 4.0 750W folding electric bike is designed for riders who want premium performance for real city use. Its 750W high-performance motor delivers strong acceleration and confident support, making it ideal for stop-start riding in traffic and varied urban routes.

With a 25° climbing capability, it also performs reliably on hills and inclines, supporting smoother riding across Manchester’s gradients and everyday commuting routes.

48V 13Ah Lithium Battery with Overnight Charging

Powered by a 48V 13Ah lithium-ion battery, the BK6S 4.0 offers dependable energy for daily commuting and regular city travel. The battery is designed to deliver balanced performance for everyday riding, without compromising comfort or usability.

With a charging time of approximately 6.5–7 hours, it can be conveniently charged overnight and ready for the next day.

Folding Frame with 20-Inch Tyres for Stability and Comfort

Unlike smaller-wheel folding bikes, the BK6S 4.0 combines a practical folding design with 20-inch tyres, offering improved stability and a smoother ride for city commuting. The folding frame makes storage and transport simple, while the larger tyre size provides better control and comfort on urban roads.

This makes it a strong choice for riders who want a folding e-bike that fits easily into flats, offices, or car boots, without sacrificing ride quality.

Dual Disc Brakes for Safer Urban Control

For everyday city riding, safety and control are essential. The front and rear disc brake system provides responsive stopping power, helping riders stay confident in traffic and busy commuting environments. Disc brakes also perform reliably in wet weather, improving safety during year-round use.

Built for Manchester Weather – IP54 Water Resistance

The BK6S 4.0 includes an IP54 waterproof rating, offering protection against rain, road spray, and dust. This rain-resistant design supports dependable riding in typical Manchester and UK weather conditions, making it suitable for all-season commuting.

Strong Frame with 120kg Load Capacity

Built with durability in mind, this high-end folding electric bike supports a maximum load of 120kg (264lbs). It is suitable for a wide range of riders and practical for carrying commuting bags or everyday essentials, while maintaining a strong and premium build feel.

Practical Size & Dimensions

• Unfolding Size: 182 × 60 × 110 cm
• Package Size: 93 × 55 × 76 cm
• Net Weight: 34.2kg

These dimensions provide a comfortable riding position while keeping the bike practical to store and transport when folded.

KOOLUX BK6S 4.0 750W Folding E-Bike – FAQs

Is it easy to fold and store?
Yes. The folding frame design makes it convenient to store in flats, offices, or car boots.

Is 750W suitable for commuting?
Yes. A 750W motor provides strong acceleration and support, especially for stop-start city riding and varied routes.

Is it legal for UK roads?
In the UK, road-legal e-bikes are typically limited to 250W and 15.5mph assistance. Please check the bike’s configuration and local regulations before riding on public roads.

How long does it take to charge?
Approximately 6.5–7 hours for a full charge.

Is it suitable for hills?
Yes. It supports inclines of up to 25°, making it suitable for urban hills and gradients.

Is it waterproof?
It has an IP54 water-resistant rating, suitable for rain and typical UK weather conditions.

7What is the max load?
The maximum load capacity is 120kg (264lbs).

Are 20-inch tyres good for comfort?
Yes. 20-inch tyres offer better stability and ride comfort compared to smaller folding bike wheels.