SPEED15.5 Mph
RANGE70 Miles
MOTOR250W
BATTERY31.2Ah
CHARGING5 Hours
WEIGHT80 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 LegislationBuilt for UK riders who go further
The Koolux X9 Pro is the electric bike for anyone who wants to leave range anxiety behind. With a dual-battery system delivering a 70-mile range, it is perfect for long commutes, weekend trails, and everything in between. If you are tired of charging every day or cutting rides short, this bike is built to keep you moving.
Powerful 250W motor for UK-legal assistance
Climb hills and accelerate smoothly with the 250W rear hub motor. It provides steady, reliable assistance up to 15.5 mph, fully compliant with UK road law. Whether you are tackling a steep city street or a muddy bridleway, the motor responds without drama.
Dual batteries give you a 70-mile range
The 48V 31.2Ah dual-battery system is the heart of the X9 Pro. Two removable 15.6Ah packs work together to deliver up to 70 miles on a single charge. That is enough for a week of commuting or a full day exploring the South Downs without hunting for a socket.
Fat tyres and suspension smooth out rough roads
Ride over potholes, gravel, and towpaths with confidence. The 20-inch fat tyres and front suspension fork absorb bumps that would rattle a standard bike. The result is a comfortable, stable ride even when the tarmac disappears.
Hydraulic disc brakes stop you safely in all weather
Dual hydraulic disc brakes give you strong, predictable stopping power, even in the rain. The aluminium alloy frame and IP54 water resistance mean the bike shrugs off British drizzle. You can ride year-round without worrying about brake fade or corrosion.
Clear LCD display and 7-speed drivetrain for control
The colour LCD display shows your speed, battery level, and trip data at a glance. The Shimano 7-speed drivetrain lets you find the right gear for any gradient. Together they make every ride feel effortless and informed.
Built tough for daily life and long adventures
The aluminium alloy frame supports up to 265 lbs, so you can carry shopping or a pannier without worry. The bike arrives with removable batteries, a pillion seat extender, and an optional throttle kit. It is ready to be your everyday workhorse or weekend escape machine.
- BRAND
- KOOLUX
- CATEGORY
- Fat Tire
- MOTOR POWER
- 250W
- RANGE
- 70 Miles
- SPEED
- 15.5 Mph
- BATTERY
- 31.2Ah
- WEIGHT
- 80 lbs
- CHARGING TIME
- 5 Hours
- BRAKE SYSTEM
- Hydraulic Disc Brake
- FRAME MATERIAL
- Aluminium Alloy
- MAXIMUM LOAD
- 265 lbs
- INPUT VOLTAGE
- 48V
- 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.
- 30-day return window — if the bike is not right for you, send it back
- Ride it. It needs to come back clean, undamaged and complete, with the charger, tools and manual
- A refund or replacement is issued after we receive and check the return
Please note:
- For a change of mind we book the collection and deduct its cost from your refund, and we tell you the amount before we book it
- 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.
Customer Reviews
5.00 out of 5
Based on 2 reviews
Absolute beast of a bike! KOOLUX X9 Pro is super fast, powerful dual battery lasts forever, feels solid and worth every penny!!
Excellent bike. I am very satisfied with it. It has good power, feels smooth on the road, and is very relaxing to ride. The quality feels solid, and it is comfortable for both daily use and longer rides. I would definitely recommend it 👍👍👍
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