Koolux

Koolux X9 Pro Electric Bike

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£875.00
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Koolux X9 Pro Electric Bike – Dual Battery Fat Tyre Ebike with Extended Range

The Koolux X9 Pro Electric Bike is a high-capacity, long-range fat tyre eBike built for riders who want maximum range, comfort, and all-terrain capability.

Designed as a powerful all-rounder, the X9 Pro combines a dual battery system, wide fat tyres, and a robust aluminium frame, making it ideal for commuting, leisure riding, and off-road use. Whether you're on roads, gravel, or trails, it delivers a stable and confidence-inspiring ride.

At its core is a 250W rear hub motor (UK legal) with higher peak output capability, providing strong acceleration and reliable performance for hills and longer journeys. Paired with a dual 48V battery setup (up to 31.2Ah total on Pro models), this bike offers significantly more range than most eBikes in its category.

With a claimed range of up to 80–150km depending on riding conditions, the X9 Pro is built for riders who want fewer charging cycles and more time riding.

👉 This is a range-focused, heavy-duty eBike — not a lightweight commuter bike

Features

  • Dual Battery System (Up to 31.2Ah Total Capacity) - Extended range compared to standard single-battery eBikes. Ideal for long-distance riding and fewer charging cycles
  • 250W Motor (UK Road Legal) - Delivers reliable performance for commuting and mixed terrain. Higher peak output provides additional power when needed
  • Long Range Performance - Up to 80–150km per charge depending on terrain, rider weight, and assist level
  • 20” x 4.0” Fat Tyres - Excellent grip and stability across roads, gravel, sand, and trails
  • Shimano 7-Speed Gearing - Smooth shifting for varied terrain and inclines
  • Front Suspension Fork - Absorbs bumps and improves ride comfort on rough surfaces
  • Disc Braking System - Reliable stopping power (spec varies between mechanical and hydraulic depending on model batch)
  • Heavy-Duty Frame Design - Built for strength and stability across all terrain. Designed for performance rather than portability

What’s in the Box

Based on consistent Koolux X9 Pro packaging across suppliers:

  • Koolux X9 Pro Electric Bike
  • Battery System (Single or Dual depending on model)
  • Battery Charger
  • Pedals
  • Basic Tool Kit (multi-tool)
  • User Manual

(Bike arrives partially assembled — setup required)

For full delivery information, please see our Shipping & Delivery Policy.

Change-of-mind e-bike returns: customer is responsible for the direct return/collection cost, currently estimated at a maximum of approximately £200 per bike for UK mainland returns. See Returns Policy for full details

KOOLUX limited warranty

KOOLUX UK lists a 12-month limited warranty from delivery to the first purchaser for manufacturing defects in the e-bike. KOOLUX’s dealer guidance directs retailer customers to their original seller for after-sales service.

  • 12 months: manufacturing defects affecting the bike’s non-wear components, including its frame, motor, controller and electrical system, where approved as a warranty fault.
  • Ordinary wear to tyres, brake pads, chains, lights, grips, spokes and similar consumables is excluded. Accidents, corrosion, misuse, incorrect assembly, unauthorised modifications and battery damage caused by an unsuitable charger, water or poor maintenance are also excluded.

Contact Rocket Ebikes with your order number, fault description and clear photographs or a short video. Please obtain approval before booking a repair or returning the bike. Your statutory consumer rights against Rocket Ebikes are unaffected.

Manufacturer reference: KOOLUX UK warranty

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Specifications

Component Specification
Motor 250W Rear Hub Motor (Higher Peak Output)
Battery Dual 48V 15.6Ah (Up to 31.2Ah Total on Pro)
Range Approx. 80–150 km
Top Speed 25 km/h (UK Legal)
Pedal Assist Multiple Levels
Display Multifunction LCD Display
Charging Time Approx. 7–8 Hours
Water Rating IP54
Gears Shimano 7-Speed
Brakes Disc Brakes (Mechanical or Hydraulic – varies by batch)
Frame Aluminium Alloy Frame
Tyres 20” x 4.0” Fat Tyres
Suspension Front Suspension Fork
Lights LED Front & Rear
Rear Rack Often Included (model dependent)
Bike Weight Approx. 36–47 kg (varies by version)
Max Rider Load Approx. 120 kg

Geometry

Wheel Size: 20” × 4.0” fat tyres
Frame: Full-size fat tyre frame
Riding Position: Upright, stable, and comfort-focused
Suitable Rider Height: Approx. 165 cm – 195 cm
Unfolded Size: Approx. 165 × 69 × 114 cm

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