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Motor Power

500W

Range

40 miles

Max Speed

15.5 mph

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Private use only
Private use only
USA Road Legal

KOOLUX BK6S 4.0 Folding Electric Bike

$882.00 USD

Sale Sold out

Taxes included. Shipping calculated at checkout.

Description

The KOOLUX BK6S 4.0 Folding Electric Bike combines rugged versatility with everyday practicality. Built around wide 20 × 4.0 inch fat tyres and a front suspension fork, this e‑bike delivers stability on both city streets and light off‑road terrain. With a high‑capacity removable battery, Shimano 7‑speed gearing and intuitive controls, it’s engineered for confident commuting and weekend adventures alike.

Full folding frame for compact storage and transport
Removable 48 V 15 Ah high‑capacity lithium‑ion battery for long range
Shimano 7‑speed gearing for adaptable pedalling across terrain
Front fork suspension enhances comfort on rough surfaces
Fat tyres for grip and stability on a variety of surfaces

Dimensions

Designed for confident handling and compact folding convenience.

Wheel size: 20 × 4.0 inch wide fat tyres

Folded footprint (approx): 96 × 38 × 75 cm for easy storage

Bike weight: approx. 33.2 kg (73 lbs)

Maximum rider load: up to 120 kg (264 lbs)

Performance

Engineered for stable and confident performance over varied terrain.

Motor: 500W brushless rear hub motor with strong torque for responsive power delivery

Maximum speed: up to approx. 15.5 mph (25 km/h) with full motor output

Battery: 48 V 15 Ah removable lithium‑ion battery for long trips

Estimated range: up to around 28–40 miles (45–64 km) per charge depending on terrain, rider weight and assist level

Charging time: approx. 5–6 hours to full

Shimano 7‑speed drivetrain for adaptable pedalling and ride control

Safety & Features

Packed with practical features and essential safety systems for confident everyday riding.

Front and rear mechanical disc brakes for dependable stopping power

Multifunction LCD display showing speed, battery level, assist mode and distance

Integrated LED headlight and rear light for enhanced visibility in low light

Front suspension fork for better comfort and control on uneven surfaces

Sturdy rear rack for carrying cargo, essentials or daily gear

Full‑coverage fenders to protect against spray and debris in varied weather conditions

20 × 4.0 inch tyres deliver excellent traction on tarmac, gravel and grass alike

Color: Black

Delivery Notice – Please Check Before Ordering

We ship within the United Kingdom, European Union, and United States, subject to carrier availability and logistical constraints. We do not deliver to the following locations:

United Kingdom

Northern Ireland (BT postcodes)
Isle of Man
Channel Islands (Jersey, Guernsey)
Scottish Highlands & Islands (IV, HS, KW, ZE, KA27–KA28)

European Union & Europe

Canary Islands
Balearic Islands (Mallorca, Ibiza, Menorca)
Corsica
Sardinia
Sicily
Greek Islands
Ceuta & Melilla
Åland Islands
Northern Sweden (remote Arctic regions)
Northern Norway (remote Arctic regions)

United States

Alaska (AK)
Hawaii (HI)
Puerto Rico (PR)
Guam (GU)
US Virgin Islands (VI)

If you’re unsure, our support team can confirm delivery availability before you order.

We reserve the right to refuse or cancel orders where:

The delivery address is located in a remote or inaccessible region
Carrier or regulatory restrictions (including lithium battery transport rules) prevent fulfilment

Fast Shipping
Mfr. Warranty
Secure Payment

Payment methods

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Legal Use Notice

Electric bikes and scooters are subject to local laws and regulations that vary by country, state, and municipality. Before purchasing or using this product, please review the applicable regulations for your location on our Regulatory Information pages.

It is the customer’s responsibility to ensure compliance with all local laws. In some areas, certain models may be restricted to private property use only. Handler Mobility accepts no responsibility for misuse or use that violates local laws. Always wear appropriate safety gear and ride responsibly.

General FAQs

Is there a warranty included?

Yes. All products come with a manufacturer warranty. Coverage details vary by model.

How long does delivery take?

We offer fast local shipping, with delivery typically aimed at 3–5 working days after an order has been processed. In some cases, parcels may arrive sooner or slightly later depending on location and courier conditions.

Is the product street-legal?

Legal requirements vary by location. Rules may differ depending on speed, power output, and whether the product is used on public roads, cycle lanes, or private property. Always check local regulations before riding.

Is the product water-resistant?

All our electric bikes and electric scooters are suitable for light rain and splashes. Water-resistance ratings vary by model.

How much maintenance is required?

We recommend regular checks of tires, brakes, and the battery, along with keeping the product clean and properly charged to ensure safe and reliable performance.

Do you offer after-sales support?

Yes. Our support team is available to assist. For any questions please contact us via our contact page.

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Find Your Perfect Ride

KOOLUX BK6S 4.0 Folding Electric Bike