Koolux BK6S 3.0 Folding Electric Bike
SKU: W87891In Stock
SPEED15.5 Mph
RANGE56 Miles
MOTOR250W
BATTERY13Ah
CHARGING5-6 Hours
WEIGHT57 lbs
This Model Is Fully Compliant With UK Road Regulations
This bike is built to comply with UK Electrically Assisted Pedal Cycle (EAPC) regulations, meaning it can be used on public roads and cycle paths without registration, tax, or a licence. Motor assistance is limited to 250W and cuts off at 15.5 mph (25 km/h).
See UK LegislationYour foldable companion for city life
The Koolux BK6S 3.0 is made for UK riders who need a practical e-bike that fits into a flat, a train carriage, or a car boot. Its folding aluminium frame and 57 lb weight make it manageable to carry up a flight of stairs, while the 250W motor and 56-mile range mean you can tackle the daily commute or a weekend ride without range anxiety. If you want one bike that does the school run, the office dash, and the leisure loop, this is it.
Quiet power for UK roads
Enjoy smooth, legal assistance from a 250W motor that helps you up to 15.5 mph, the maximum assisted speed allowed under UK regulations. The motor responds gently as you pedal, so you feel in control on busy London streets or quiet country lanes. It is designed to be efficient, not aggressive, making every journey feel effortless.
Go further on a single charge
The 36V 13Ah lithium-ion battery gives you a real-world range of up to 56 miles, so you can commute all week on one charge or enjoy a long Sunday ride without worry. When you do need to top up, the removable battery charges in 5–6 hours, and you can take it indoors to charge at your desk or in the kitchen. That is freedom from the plug socket.
Comfort that smooths out the city
The front fork suspension and 20-inch fat tyres soak up potholes, cobbles, and cracked tarmac, so you arrive at work without feeling shaken. The upright riding position and wide saddle keep you comfortable on longer rides, while the Shimano 7-speed gears let you find the right cadence whether you are climbing a hill or cruising along the seafront.
Braking you can trust in traffic
Mechanical disc brakes give you dependable stopping power in wet or dry conditions, which matters when a pedestrian steps out or a car pulls across a cycle lane. The brakes are easy to adjust and maintain, and they work well even with the extra weight of a loaded rear rack. You will feel confident filtering through rush-hour traffic.
Clear controls and useful extras
The multifunctional LCD display shows your speed, battery level, and distance travelled, so you always know how much range you have left. The integrated rear safety light and StVZO-certified front headlight keep you visible on dark winter commutes, and the full fenders stop muddy spray from soaking your clothes. It is a bike that thinks about the details.
Built to carry you and your stuff
The aluminium alloy frame is strong yet light, and it supports a maximum load of 265 lbs, so it can handle a rider plus a pannier full of shopping. The included rear rack is perfect for a backpack or a couple of bags, and the folding mechanism is quick and secure, so you can store the bike in a hallway cupboard or under a desk. When you unfold it, it is ready to go in seconds.
- BRAND
- KOOLUX
- CATEGORY
- Folding
- MOTOR POWER
- 250W
- RANGE
- 56 Miles
- SPEED
- 15.5 Mph
- BATTERY
- 13Ah
- WEIGHT
- 57 lbs
- CHARGING TIME
- 5-6 Hours
- BRAKE SYSTEM
- Mechanical Brakes
- FRAME MATERIAL
- Aluminum Alloy
- MAXIMUM LOAD
- 265 lbs
- INPUT VOLTAGE
- 36V
- TIRE SIZE
- 20 inch
- TORQUE
- N/A
Secure checkout and fast UK delivery on every order.
- Free standard UK delivery on most bikes — 2 to 7 business days
- Express delivery may be available on request
- Full tracking included with every order
- Pay securely with Visa, Mastercard, PayPal, Apple Pay, Google Pay, or Klarna
- 0% finance available through Klarna at checkout
Before you order:
- Delivery is to UK mainland addresses — some remote areas may have a small surcharge
- Most bikes arrive 85–90% pre-assembled and include basic tools for setup
- If you are unsure about sizing or specs, contact us before you buy
Full details at Payment & Shipping.
Simple and fair terms so you can buy with confidence.
- 14-day return window — if the bike is not right for you, send it back
- The bike must be unused, in original packaging, with all accessories included
- A refund or replacement is issued after we receive and check the return
Please note:
- Returns for change of mind must meet the unused and original condition requirement
- If we sent the wrong item or it arrived faulty, we cover return shipping in full
- All bikes include a 12-month manufacturer warranty as standard
Full details at Returns & Refunds and Warranty.
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