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 |
| Maximum Speed | 15.5 MPH |
| Maximum Range | 41 Miles |
| Charging Time | 5+ Hours |
| Shock Absorbers | Front |
| Brakes | Dual Mechanical Disc Brakes |
| 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.
What's in the box?
1X Koolux BK6S 4.0 Electric Bike (Mostly Built)
1X Charger
2X Keys
1X Assembly Tools
1X Assembly User Manual
Customer Reviews
Feels solid and well put together for the price.
Great to hear — shout if you need anything.
Very good bike. Uk legal. Climbs hills with ease. Very fast delivery and brilliant customer support. Would 100% recommend.
Motor is quiet and the assist comes in smoothly.
Appreciate the feedback, enjoy the rides.
Very happy with the bike. Had an issue with it cutting out. They asked for a video and sent a new battery straight out. Arrived at my door two days later. Had no issues since great bike and customer service 👍
Very happy with bike , 3 day uk delivery , tracking worked fine, bike needs front wheel attaching, tyres pumping up, front caliper needed adjusting , nothing unexpected, bike comes with tool kit, pump, comprehensive manual, bike exactly as listing. Goes very well ! Lots of power , arrives set at 15.5 mph , throttle not fitted (but included) for use on private land of course. Seller highly recommend, had couple of questions that were answered straight away, great bike at great price ! 👍 😃 , very well packaged
Koolux BK6S 4.0 Electric Bike - Other Web Reviews:
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.
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