Koolux BK6S 4.0 Electric Bike
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Koolux BK6S 4.0 Electric Bike
Colour: Black
Product Specifications
| Brand: | Koolux |
| Bike Type: | City & Commuter, Folding, Fat Tyre |
| Motor Power: | 500W |
| Battery Ah: | 15AH |
| Battery Voltage: | 48V |
| Maximum Speed: | 15.5MPH |
| Maximum Range: | |
| Charging Time: | 5+ Hours |
| Brakes: | Front & Rear Hydraulic |
| Bike Weight: | 27KG |
| Max Climb: | 15 degrees |
| Maximum Load: | 150KG |
Quick Summary
The KOOLUX BK6S 4.0 combines rugged fat‑tyre traction with a powerful 500 W motor and a high‑capacity 48 V 15 Ah battery. Designed for both urban streets and off‑road paths, it delivers stable handling and dependable performance.
Smooth Power Delivery
The 500 W hub motor offers responsive acceleration and smooth pedal‑assist across seven levels, letting you tackle hills and headwinds without strain. A thumb throttle provides instant power when you need a boost.
Comfort & Control
Wide 4.0″ tyres and front suspension absorb bumps and maintain grip on loose or uneven surfaces. Dual mechanical disc brakes ensure consistent, controlled stopping power in all weather.
Smart Battery System
A lockable, removable 48 V 15 Ah battery provides long-range capability and convenient off‑bike charging. Built‑in protection circuits guard against over‑charge, over‑discharge, and overheating for safe, reliable use.
Tech You Can Trust
The clear backlit LCD displays speed, battery level, distance travelled, and assist mode at a glance. Simple handlebar controls let you switch assist levels and monitor ride data easily.
Built for Everyday Use
With its durable frame, fat‑tyre stability, and straightforward folding rack mount design, the BK6S 4.0 is ready for daily commutes, weekend adventures, and everything in between—wherever you choose to ride.
Please note that the use of electric scooters and electric bikes in the UK is subject to specific regulations.
Electric Scooters:
Currently, privately owned electric scooters are not permitted on public roads, pavements, or cycle lanes. They are only legal on private land with the landowner’s permission.
Riders are advised to familiarize themselves with local laws and guidelines to avoid potential fines or penalties.
Electric Bikes (E-Bikes):
Electric bikes that meet UK government criteria (pedal-assisted, motor limited to 250W, and a maximum speed of 15.5 mph) are classified as Electrically Assisted Pedal Cycles (EAPCs). These can be used on public roads and cycle lanes without a license, tax, or insurance.
Riders must be at least 14 years old to legally ride an EAPC in the UK.
By purchasing and using these products, customers acknowledge their responsibility to comply with all applicable laws and regulations. Our company cannot be held liable for misuse or legal consequences resulting from non-compliance.
For more information, please refer to the UK Government’s official guidelines.
The customer assumes all liability and risk associated with the use of electric scooter or electric bike products and holds TrailSurge and its owners free from any liability caused by their use. Certified helmets and full protective gears must be worn at all times for your own safety.
Koolux BK6S 4.0 Electric Bike Review Summary
What people like
Pros
- Budget-Friendly Value: It offers a comprehensive set of features and specifications typically found in more expensive models, making it an excellent value for its price.
- Powerful Motor: Equipped with a responsive 500W (or 250W with higher peak) motor, it provides ample power for tackling hills, headwinds, and comfortable cruising.
- All-Terrain Capability: Its robust 20x4.0-inch fat tires deliver superior grip and stability, allowing for comfortable and stable rides across diverse surfaces including city roads, gravel, sand, and snow.
- Folding Design: The foldable frame enhances portability and ease of storage, making it convenient for transport in vehicles, apartments, or public transit.
- Long Battery Range: A 48V 15Ah (or 13Ah) battery provides an impressive range of 45-90 km (up to 95 km) on a single charge, suitable for longer commutes and adventures.
- Comfortable Riding: Features like front suspension (and sometimes a suspension seat post) combined with fat tires contribute to a smooth and comfortable experience, even on uneven terrain.
- Reliable Braking: The dual disc brake system offers strong and consistent stopping power, ensuring safety in various weather conditions.
- Versatile Riding Modes: Riders can choose from pedal assist, pure electric (throttle), and classic pedal modes, offering flexibility in how they ride.
- Durable Construction: The bike is built with a sturdy aluminum alloy frame, indicating good durability.
- Integrated Accessories: It often comes equipped with practical features such as integrated lights, mudguards, and a rear carrier.
Cons
- Considerable Weight: At approximately 33 kg, the bike is relatively heavy, which can make it challenging to lift or carry, particularly for storage or loading.
- Lack of Rear Suspension: While featuring front suspension, the absence of rear suspension is noted by some reviewers, potentially impacting comfort on very rough trails.
- Handlebar Width: Some feedback suggests the handlebars are not very wide, which might affect single-handed control, especially during braking or accelerating.
- Braking Effort: Mechanical disc brakes may require a firm pull to achieve effective stopping, which some users noted.
Your product will be delivered in 3-5 Working Days from order date. We will dispatch your product and give you tracking details usually within 2 days of ordering. We use a panel of delivery companies such as DPD, Parcelforce, DX, and BJS Home Delivery. Unfortunately we do not ship to Northern Ireland or British Isles.
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