Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux
Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux

Koolux BK10S Fat Tyre Electric Bike

£999.00 £679.00
-- people are viewing this product
Out of Stock – Restock due within 40 days
Free 3–5 Day Express UK Delivery
Color:Silver
Battery Size:500W
Out Of Stock

Product Specifications

Brand Koolux
Bike Type Fat Tyre, City & Commuter, Delivery & Cargo
Motor Power 250W
Maximum Speed 15.5 MPH
Maximum Range 40 Miles
Charging Time 7+ Hours
Shock Absorbers Front
Wheel Size 20inch x 4.0 Fat Tyre
Brakes Dual Mechanical Disc Brakes
Gears 7 Speed Shimano Gears
Bike Weight 27KG
Max Climb 15 degrees
Maximum Load 120KG
Description
Reviews

Quick Summary
The KOOLUX BK10S combines legal-class performance with portability. With its 250 W motor, 48 V battery, fat tyres, and foldable frame, it's ideal for commuting and light off‑road adventures.

Power & Range
The 250 W motor with ~60 Nm torque gives solid hill climbing and smooth acceleration. The battery supports up to approximately 90 km per charge in assist modes.

Comfort & Safety
Ride smoothly on fat tyres and front suspension. Hydraulic disc brakes offer reliable stopping—even in wet conditions.

Smart Design Features
Folds compactly for easy storage or transport. The display shows speed, battery level, and assist mode. Battery is easily removable and lockable.

Built for Everyday Use
Equipped with front/rear LED lights, mudguards, Shimano 7-speed gearing, and a stable, lightweight frame. Ready for daily commuting or weekend outings.
A man rides a white electric bike on a paved path through a park. Tall buildings are visible in the background. Text on the image highlights the bike’s adjustable speed settings up to 45 km/h and compliance with regulations.

48V 13Ah Lithium Battery – Long Range & Secure

This high‑capacity 48 V 13 Ah lithium battery delivers an impressive range of 35‑90 km, giving you the freedom to ride further. The detachable battery compartment includes a safety lock so you can remove it for charging without worry.

A graphic of an electric bike’s battery shows its internal cells glowing green. Text highlights features: 48V/13Ah capacity, 5–7h charging time, 25–35KM range per charge, and Li-ion battery with a “Smart Chip.”.

Removable 48V 12Ah Battery – Fast Charge & High Capacity

With a removable 48 V 12 Ah battery rated at 576 Wh, you can enjoy long rides and quick recharging. The 4 A fast‑charging system powers up in hours and ensures a maximum range of around 70 km.

A black folding electric bicycle is shown in its folded position, with both wheels compactly aligned and the pedal tucked in. The frame has the brand name Samebike visible.

High‑Pressure Suspension Fork – Smooth Ride

A built‑in high‑strength steel shock absorber provides excellent cushioning and lubrication. The high‑pressure suspension fork smooths out bumps and potholes, giving you more control and comfort.

A white all-terrain bicycle with 27.5 x 2.2 inch tires is displayed on a pebbled lakeshore with mountains and trees in the background. Text highlights the bike’s tire size and off-road features.

Smart‑Chip Battery Cell – Efficient & Reliable

Large 27.5×2.2‑inch tyres with a bump tread pattern provide superior grip on bumpy roads and rough terrain. Ride safer with enhanced ground contact and reduced skidding.Featuring a 48 V 13 Ah high‑capacity battery cell with smart‑chip technology, this system reduces energy consumption and extends your riding range. The 5‑7 hour charging time and 25‑35 km range per charge keep you moving longer.

What's in the box?

Koolux BK10S Fat Tyre Electric Bike

1X Main Product (Mostly Built)

1X Charger

1X Charger

1X Toolkit

1X Toolkit

1X Instructions & User Guide

1X Instructions & User Guide

Customer Reviews

Based on 3 reviews
67%
(2)
33%
(1)
0%
(0)
0%
(0)
0%
(0)
C
Chloe K.
Great commuter bike

Assembly was straightforward with clear instructions.

Thanks — glad it’s working well for you!

I
Imogen P.
Battery life is good

Feels solid and well put together for the price. Saddle was a bit firm at first, swapped to a gel seat.

Appreciate the feedback, enjoy the rides.

A
Aisha P.
Surprisingly nimble

Assembly was straightforward with clear instructions. Needed a quick tyre top‑up on arrival.

Great to hear — shout if you need anything.

Any Questions?

Get instant support from our expert team

0800 099 6187
help@trailsurge.co.uk

Frequently Asked Questions

Find answers to common questions about our products and services.
We offer a 30-day return policy for all unused items in their original packaging. Simply contact our customer service team to initiate a return.
Free Delivery on all orders. Your product will be delivered within 3-5 days. via Express Delivery. We use a panel of trusted couriers such as DPD, UPS, Fedex, DHL. Tracking information is provided upon dispatch.
Once your order ships, you'll receive a tracking number via email. You can use this number to track your package on our website or the carrier's site.
We are confident in the quality of E-Bikes and E-Scooters we offer here at Trail Surge. All Products come with a minimum 12 Month Manufacture Guarantee/Warranty for main components.
Yes 90% Assembled. All products come with a toolkit and an instruction manual. If you need any extra help with setting up your bike you can contact our customer support team.
How often and how far do you plan to ride? For daily commutes, consider a commuter-focused ebike with a comfortable riding position and good range. If you plan to use it for weekend adventures or longer rides, look for a model with a longer range and more powerful motor such as a Mountain E-Bike.

Authorised Brands

The image shows the word Hidoes in bold, italicized yellow letters on a white background.
The image displays the word HITWAY in bold, black, uppercase letters on a white background.
The image shows the DYU logo, featuring a bold red graphic resembling a stylized D or checkmark above the black capital letters DYU on a white background.
Black text on a white background reads DUOTTS in a bold, modern font. The letter D has a unique solid and outline design, while the remaining letters are simple and rounded.
Black and white logo featuring a stylized circular emblem above the bold, uppercase text “VARUN” on a plain white background.
The image shows a red geometric S logo above the word SAMEBIKE written in bold, black, modern uppercase letters on a light gray background.
The word KOOLUX in all capital letters, with each letter in a different color: K in red, Os and U in green, L in yellow, and X in magenta, on a white background.
An orange, stylized bird or phoenix symbol appears above the word ENGWE written in a modern, futuristic black font on a white background.
Black geometric logo resembling a stylized bird above the words SUR-RON in modern, bold font, all set against a white background.
Black RCB logo on a white background, with three parallel vertical lines to the left of the bold letters RCB.
Black stylized text logo that reads IENYRID on a white background. The letters are bold and italicized, giving a sense of motion and modernity.
The image shows the word Hidoes in bold, italicized yellow letters on a white background.
The image displays the word HITWAY in bold, black, uppercase letters on a white background.
The image shows the DYU logo, featuring a bold red graphic resembling a stylized D or checkmark above the black capital letters DYU on a white background.
Black text on a white background reads DUOTTS in a bold, modern font. The letter D has a unique solid and outline design, while the remaining letters are simple and rounded.
Black and white logo featuring a stylized circular emblem above the bold, uppercase text “VARUN” on a plain white background.
The image shows a red geometric S logo above the word SAMEBIKE written in bold, black, modern uppercase letters on a light gray background.
The word KOOLUX in all capital letters, with each letter in a different color: K in red, Os and U in green, L in yellow, and X in magenta, on a white background.
An orange, stylized bird or phoenix symbol appears above the word ENGWE written in a modern, futuristic black font on a white background.
Black geometric logo resembling a stylized bird above the words SUR-RON in modern, bold font, all set against a white background.
Black RCB logo on a white background, with three parallel vertical lines to the left of the bold letters RCB.
Black stylized text logo that reads IENYRID on a white background. The letters are bold and italicized, giving a sense of motion and modernity.
Compare bikes
No bikes added yet.
Add up to 4 bikes to compare key specs.