KOOLUX X11S Dual Battery Folding E-bike UK – 150km Range Hydraulic Brakes
KOOLUX X11S – Dual Battery, Hydraulic Brakes, Premium Folding Performance.
Meet the X11S – the folding electric bike that combines dual-battery range with hydraulic braking confidence.
With a dual-battery system (48V 13Ah + 10.4Ah) delivering up to 150km range, hydraulic disc brakes for superior stopping power, 20×4.0" fat tyres, Shimano 7-speed gearing, and a sturdy iron frame that folds, the X11S is the premium choice for riders who demand the best in safety, range, and portability.
UK & EU stock – ready to ship. No long waits.
Who Is This Bike For?
The KOOLUX X11S is perfect for:
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Safety-conscious commuters – hydraulic brakes stop faster in wet weather
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Long-distance riders – 150km range means ride for days without charging
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Delivery professionals – dual batteries = maximum uptime, maximum earnings
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All-terrain explorers – fat tyres + suspension + hydraulic brakes = total confidence
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Caravan and motorhome owners – folding frame + UK/EU stock = holiday ready
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Premium buyers – want the best folding e-bike on the market
Dual Battery System – 80-150km of Freedom
The X11S features a sophisticated dual-battery setup:
| Battery | Capacity | Location |
|---|---|---|
| Main battery | 48V 13Ah | Integrated in frame |
| Secondary battery | 48V 10.4Ah | Rear rack mounted |
| Total | 48V 23.4Ah (1123Wh) | – |
Real-world range you can trust:
| Riding Mode | Expected Range |
|---|---|
| Low assist (Eco mode) | Up to 150km (93 miles) |
| Mixed riding (Normal) | 110-130km (68-80 miles) |
| High assist / Hills / Fat tyres | 80-100km (50-62 miles) |
Removable, swappable, chargeable anywhere. No range anxiety. Just ride.
Hydraulic Disc Brakes – Premium Stopping Power
This is the key differentiator of the X11S. Unlike mechanical disc brakes found on most folding e-bikes, the X11S comes with hydraulic disc brakes front and rear.
Why hydraulic brakes matter:
| Feature | Hydraulic Brakes | Mechanical Brakes |
|---|---|---|
| Stopping power | Superior | Moderate |
| Wet weather performance | Excellent | Average |
| Hand fatigue | Minimal (2-finger braking) | High (4-finger braking) |
| Maintenance | Self-adjusting | Manual cable adjustment |
| Modulation | Smooth, progressive | Grabby or vague |
| Safety margin | High | Standard |
In wet UK weather, on steep hills, or in emergency stops – hydraulic brakes can make all the difference.
UK/EU Legal 250W Motor – Power Meets Compliance
The X11S uses a rated 250W brushless hub motor – fully compliant with UK and EU EAPC regulations:
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Smooth assistance up to 25km/h (15.5mph)
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Climbs hills effortlessly – even with dual batteries and cargo
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Quiet, reliable, maintenance-free
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Integrated speed sensor for accurate assistance
No license, no tax, no registration. Just fold, ride, and enjoy.
20×4.0" Built-up Fat Tyres – All-Terrain Confidence
The 20×4.0" built-up fat tyres are engineered for versatility:
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Urban roads – smooth, stable, puncture-resistant
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Gravel and canal paths – excellent grip and shock absorption
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Mud and grass – fat tyres float over soft surfaces
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Potholes and rough tarmac – cushioned ride, less fatigue
Built-up construction means enhanced durability and puncture protection.
Shimano 7-Speed Gearing + Integrated Speed Sensor
The Shimano 7-speed gear system gives you reliable, precise shifting:
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Low gears for steep hills and heavy loads
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High gears for efficient cruising on flats
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Smooth, dependable shifting from a world-leading brand
The integrated speed sensor ensures accurate speed and distance tracking on the LCD display.
Suspension Fork – Front-end Comfort
The suspension fork absorbs bumps, vibrations, and impacts:
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Less fatigue on long rides
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More control on loose or uneven surfaces
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Protects wrists and hands from jarring impacts
Fat tyres + suspension fork = luxury comfort on any terrain.
Sturdy Iron Frame – Built to Last
The X11S uses a sturdy iron frame that prioritises durability:
| Benefit | Why It Matters |
|---|---|
| Extreme durability | Withstands years of folding/unfolding |
| High strength | Supports heavier riders and cargo |
| Stable at speed | Less flex than aluminium |
| Foldable design | Folds for storage without compromising strength |
Note: Iron is heavier than aluminium but significantly more durable. The X11S is built for riders who prioritise longevity and strength over minimal weight.
LCD Display – Information at a Glance
The LCD display shows everything you need:
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Current speed
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Battery level (both batteries)
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Distance travelled
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Pedal assist level
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Riding mode
Easy to read in sunlight or rain.
Folds for Easy Storage
The X11S folds quickly and compactly:
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Fits in car boots – take it to the trails
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Fits on trains and buses – multi-modal commuting
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Fits in small flats – store indoors, safe from theft
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Fits in caravans/motorhomes – bring it on every trip
Premium features shouldn't mean premium storage headaches.
UK & EU Stock – Ready to Ship
No waiting for container ships. No customs delays.
The X11S is stocked in UK and EU warehouses, meaning:
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Fast delivery – days, not weeks
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No import fees – price includes all taxes
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Easy returns – local customer support
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In warranty – protected by EU/UK consumer laws
Technical Specifications (Full List)
| Specification | Detail |
|---|---|
| Model | KOOLUX X11S |
| Type | Dual Battery Folding E-bike |
| Available Color | Cool Black |
| Frame Material | Iron (Sturdy & Durable) |
| Motor | Rated 250W brushless hub (UK/EU legal) |
| Top Speed | 25km/h (15.5mph) |
| Range | 80-150km (50-93 miles) |
| Battery | Dual: 48V 13Ah + 48V 10.4Ah (23.4Ah total) |
| Gear System | Shimano 7-speed |
| Sensor | Integrated Speed Sensor |
| Brakes | Hydraulic Disc Brakes (front & rear) |
| Front Fork | Suspension Fork |
| Tyres | 20×4.0" Built-up Fat Tyres |
| Display | LCD Display |
| Suitable For | Urban commuting, scenic routes, all-terrain riding |
| Stock Location | UK & EU |
What's in the Box?
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KOOLUX X11S Folding E-bike
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48V 13Ah Main Battery (integrated)
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48V 10.4Ah Secondary Battery (rear rack)
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Dual Charger (charges both batteries)
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Tool Kit
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Pedals
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User Manual
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LCD Display (pre-installed)
Why Choose the KOOLUX X11S Over Other Folding E-bikes?
| Feature | KOOLUX X11S | Standard Folding Ebike | Premium Folding Ebike |
|---|---|---|---|
| Battery | Dual 48V 23.4Ah | Single 36V 10Ah | Single 48V 14Ah |
| Range | 80-150km | 30-50km | 60-100km |
| Brakes | Hydraulic Disc | Mechanical Disc | Mechanical Disc |
| Tyres | 20×4.0" Fat | 20×1.95" Thin | 20×4.0" Fat |
| Gears | Shimano 7-speed | Generic 6/7-speed | Shimano 7/8-speed |
| Suspension | ✅ Front fork | Often none | ✅ Front fork |
| Frame | Iron (sturdy) | Steel (heavy) | Aluminium (light) |
| Stock | UK & EU | Varies | Varies |
| Best for | Safety + range + folding | Basic commuting | Range or folding |
The safety and range king: Hydraulic brakes + dual batteries + folding = unbeatable combination.