I recently purchased the KOOLUX X11 folding fat-tire e-bike from e-trailz
I recently purchased the KOOLUX X11 folding fat-tire e-bike from e-trailz, and I couldn't be happier with both the product and the service!
The e-trailz Experience
e-trailz's service was fantastic. The communication regarding my order was prompt and helpful, and the delivery was quick.
I recently purchased the KOOLUX X11 folding fat-tire e-bike from e-trailz
I recently purchased the KOOLUX X11 folding fat-tire e-bike from e-trailz, and I couldn't be happier with both the product and the service!
The e-trailz Experience
e-trailz's service was fantastic. The communication regarding my order was prompt and helpful, and the delivery was quick.
Both bikes have performed really well they have a great range on the battery and really come into their own on uphill climbs. They can be pedalled on the flat withoutbany assistance however due to weight if on slight uphill incline then battery assistance is required. Great aftersales after I had to replace a part thanks for your help.
Regular price
£1,110.00
Sale price
£949.99
Save £160.01
1-Year Warranty
Pay in Instalments with Klarna
Free Shipping Across Great Britain
2-Year Frame Warranty
KOOLUX X9 Pro Electric Bike
Ideal for commuting, exploring, or everyday adventures.
Maximum Load
120 KG
Motor Power
250W
Range
100 KM
Waterproof
IP54
Battery
48V 31.2AH
Free Shipping All Over Great Britain
Key Specifications
Model
X9 PRO
Battery Type
18650 lithium-ion power battery
Battery Capacity
31.2Ah
Voltage
48V
Motor Rated Power
250W
Motor Type
Brushless
Charging Time
6-7 Hours
Tyre Size
20×4.0 inches
Range
100KM - 140KM
Top Speed
25 km/h
Maximum Load
120 kg
Climbing Ability
Up to 25°
Waterproof Grade
IP54
Brakes
Front and rear disc brakes
Frame
Aluminum Alloy
Display
LCD Display
Keep the 25 km/h limit on public roads. Range varies with rider weight, terrain, temperature, tyre pressure, assist level and riding style.
Features And Details
What's In The Package
Ebike x 1
Bicycle Pump x 1
Bicycle Lock x 1
Battery Charger x 1
Installation Tools x 1
Key x 2
Frequently Asked Questions
What is the maximum speed of the Koolux X9?
The maximum speed is25 km/h (15.5 mph).
What is the battery capacity and type for the Koolux X9?
The battery is a 48V 31.2Ah 18650 lithium-ion power battery.
How long does it take to charge the Koolux X9?
It takes about 6-8 hours to fully charge the battery.
What is the range per charge for the Koolux X9?
The range can be between 100-140 km depending on the mode and road conditions.
Is the Koolux X9 suitable for public road use?
Yes, it complies with EU and UK road regulations, making it legal for public road use.
Does the Koolux X9 have a throttle?
This model should be used in line with UK EAPC rules. Do not derestrict, modify, or use throttle-only operation on public roads.
Legal use notice: For UK public-road use, keep the bike configured to EAPC limits: 250W continuous rated motor and 25 km/h (15.5 mph) assistance cut-off. Do not derestrict or modify for public-road use.
Regular price
£1,050.00
Sale price
£899.99
Save £150.01
1-Year Warranty
Pay in Instalments with Klarna
Free Shipping Across Great Britain
2-Year Frame Warranty
KOOLUX X11 - Dual-Battery Folding Fat-Tire E-Bike
Up to 150 km range • 48V (23.4Ah total) • Hydraulic discs • 20×4.0″ tires
Maximum Load
120 kg
Motor Power
250W continuous rated rear hub
Range
Up to 150 km
Waterproof
IP54 water resistance
Battery
Dual 48V 11.7Ah batteries (23.4Ah)
Free Shipping All Over Great Britain
Key Specifications
Model
X11
Battery Type
Lithium-ion
Battery Capacity
23.4Ah
Voltage
48V
Motor Rated Power
250W continuous rated
Motor Type
Rear hub
Charging Time
~5–7 hours
Tyre Size
20×4.0″
Range
Up to 150 km
Top Speed
25 km/h
Maximum Load
~120–150 kg
Climbing Ability
20°
Waterproof Grade
IP54
Brakes
Hydraulic disc
Frame
Foldable
Display
LCD Display
Keep the 25 km/h limit on public roads. Range varies with rider weight, terrain, temperature, tyre pressure, assist level and riding style.
Features And Details
What's In The Package
Ebike x 1
Bicycle Pump x 1
Bicycle Lock x 1
Battery Charger x 1
Installation Tools x 1
Key x 2
Frequently Asked Questions
How far can I ride on a single charge?
In typical mixed riding, owners and retailers report 80–150 km per charge from the dual 48V 11.7Ah batteries (23.4Ah total). Expect the higher end with eco PAS on flatter routes and the lower end with heavy throttle, hills, or cold weather.
What’s the top speed, and is it road-legal in the UK/EU?
The X11 is commonly configured at 25 km/h to comply with EU/UK e-bike rules (EPAC). Some listings mention higher “ Check your local regulations before altering speed limits.
What motor and battery setup does it use?
A rear-hub 250W motor (~250W/250W) paired with two 48V 11.7Ah batteries (total 23.4Ah), giving strong range and balanced weight.
Does it have hydraulic brakes and fat tires?
Yes. Retailers list hydraulic disc brakes front and rear and 20×4.0″ Kenda fat tires for grip on mixed terrain.
Is it okay in rain?
Listings cite IP54 water resistance, fine for light rain and road spray. Avoid submersion and pressure-washing; dry and store indoors after wet rides.
How long does charging take?
Retailers indicate roughly 5–7 hours depending on charger amperage and depth of discharge.
Legal use notice: For UK public-road use, e-bikes must meet EAPC rules including a 250W continuous rated motor and assistance cut-off at 25 km/h (15.5 mph). Do not derestrict or use non-compliant modes on public roads. Available variants must be used according to local law.
I recently purchased the KOOLUX X11 folding fat-tire e-bike from e-trailz
I recently purchased the KOOLUX X11 folding fat-tire e-bike from e-trailz, and I couldn't be happier with both the product and the service!
The e-trailz Experience
e-trailz's service was fantastic. The communication regarding my order was prompt and helpful, and the delivery was quick.
Regular price
£1,000.00
Sale price
£799.99
Save £200.01
1-Year Warranty
Pay in Instalments with Klarna
Free Shipping Across Great Britain
2-Year Frame Warranty
KOOLUX X12 PRO | 250W | 48V 15Ah | 25 KM/H
Maximum Load
120kg
Motor Power
250W
Range
74.6 Miles
Waterproof
IP54
Battery
48V 13Ah
Free Shipping All Over Great Britain
Key Specifications
Model
Koolux X12 PRO 48V 13Ah 250W E-Bike
Battery Type
Lithium battery
Battery Capacity
15Ah
Voltage
48V
Motor Rated Power
250W (250W)
Motor Type
Hub motor (rear)
Charging Time
5-6 hours
Tyre Size
20*4.0Inch
Range
74.6 miles
Top Speed
25 km/h
Maximum Load
120kg
Climbing Ability
25°
Waterproof Grade
IP54
Brakes
Hydraulic Brakes
Frame
Aluminum
Display
TW35H display with app
Important notice: This e-bike is presented for UK road use at 250W and 25 km/h. Range varies with rider weight, terrain, temperature, tyre pressure, assist level and riding style.
Features And Details
What's In The Package
Ebike x 1
Bicycle Pump x 1
Bicycle Lock x 1
Battery Charger x 1
Installation Tools x 1
Key x 2
Frequently Asked Questions
What is the maximum range of the Koolux X12 PRO?
Up to 74.6 miles (120 km) on a single charge.
How long does it take to charge the battery?
Approximately 5-6 hours.
What is the top speed?
25 km/h (15.53 mph).
Is the battery removable?
Yes, the battery is removable for convenient charging.
What type of motor does it have?
It features a 250W rated (250W) brushless hub motor.
Colorful display shows real-time speed, battery, and distance data, with 5 pedal assist levels for a personalized ride.
Dual suspension system provides a smooth and comfortable ride in rough or uneven conditions.
Mechanical disc brakes offer reliable stopping power with low maintenance.
Shimano 7-speed shifting ensures smooth transitions across terrains.
Comfortable ergonomic saddle designed for pressure relief on long rides.
Dual LED headlights and taillights for safe day/night riding.
Extended rear seat cushion, thickened and lengthened for more comfort.
Thumb throttle delivers 35Nm of torque for hill climbing and fast acceleration.
20" x 2.35" tires with puncture resistance and reflective safety strips.
Folds seamlessly in 5 seconds to under 0.15 cubic meters — fits any car boot.
❓ Frequently Asked Questions
Q: How long does the battery last on a single charge? A: The 36V 13AH battery gives up to 60km of range — 30km on throttle mode + 30km with pedal assist.
Q: How long does it take to fully charge? A: Charging takes between 4 to 6 hours from 0% to 100%.
Q: Is the bike suitable for tall or short riders? A: Yes! The adjustable handlebar and long seat make it comfortable for riders between 5’1” to 6’4”.
Q: Can I ride it without using the motor? A: Absolutely. You can ride it like a regular bicycle using the 7-speed Shimano gears.
Q: Is it waterproof? A: The bike is splash-proof and designed for light rain, but avoid submerging electrical parts in water.
Q: Does it come assembled? A: It comes 85% pre-assembled. You’ll just need to attach the handlebar, pedals, and a few small parts (takes 15–20 min).
Q: How much weight can it carry? A: The max payload is 150kg (330 lbs), so it’s suitable for adults with a passenger or cargo.
Q: Does it have cruise control? A: Yes, when holding the throttle for a few seconds, cruise control can activate depending on settings.
Q: Can I bring it inside a car? A: Yes, the bike folds in 5 seconds and fits in most car boots — very travel-friendly!
Q: Is there a warranty? A: Most sellers offer 6–12 months warranty on the battery and motor. Check with your store for exact terms.
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I recently purchased the KOOLUX X11 folding fat-tire e-bike from e-trailz
I recently purchased the KOOLUX X11 folding fat-tire e-bike from e-trailz, and I couldn't be happier with both the product and the service!
The e-trailz Experience
e-trailz's service was fantastic. The communication regarding my order was prompt and helpful, and the delivery was quick.
Both bikes have performed really well they have a great range on the battery and really come into their own on uphill climbs. They can be pedalled on the flat withoutbany assistance however due to weight if on slight uphill incline then battery assistance is required. Great aftersales after I had to replace a part thanks for your help.
