£44.99
TRAILSURGE
COMBINED CUSTOMER REVIEWS
OVERALL RATING ACROSS FOUR PLATFORMS
4.8/5
1909 customer reviews
Combined review snapshot
REVIEWS FROM
This is one combined summary, not the individual rating of any one platform.
RATING BREAKDOWN
NUMBER OF REVIEWS
78% of reviews are 5-starBased on the combined review counts above
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Koolux X12 Pro Electric Bike
SKU: KOOLUX-X12PRO-GRAY
Barcode: 4749129022505
Motor
250W
Battery
48V 13AH
Speed
15.5 MPH
Range
43.5 MILES
Was £1,099.99
£759.99
In stock
Early Black FridaySave £340 (30% off)
Shop with confidence
We’re a genuine, authorised retailer for selected brands, with our own Nuneaton repairs workshop.
Buying Koolux online?
As with a car, ask where you can take your ride if it needs a repair.
Be cautious if a seller can’t give you a local workshop address, especially if they ship from overseas or dropship.
Check with the brand that the seller is authorised and ask who handles warranty repairs.
- ShowroomVisit by appointment
- Repairs workshopOn-site servicing
- Our own stockDispatched by us
TRAIL SURGE LTD
Company No. 16935369 · VAT No. 521226239
Unit 62, Centenary Business Centre, Nuneaton, CV11 6RY
Supporting our local community
- NHS staff
- Local police
- Fire & rescue
TRAILSURGE PRICE MATCH
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TrailSurge is a UK company and VAT registered too: Company No. 16935369 · VAT No. 521226239.
Klarna£253.33 ×3
Clearpay£190.00 ×4
PayPal£253.33 ×3
Monthly financeRates at checkoutHigh AcceptancePayment options and eligibility are subject to approval and confirmed at checkout.
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Trail Surge Ltd · Unit 62, Centenary Business Centre, Nuneaton, CV11 6RY
Complete your ride
Choose your delivery setup
Boxed delivery
Usually 3–5 working days
Fully assembled delivery
assembly · Est. 5–7 working days
Next-day delivery
Selected in-stock items
Delivery partners
Options and charges are shown at checkout. Remote areas may take longer.
Excellent on Trustpilot
14 days to cancel after delivery. Up to 30 days for unused, unopened items.
Policy conditions and return costs may apply. Your statutory rights are unaffected.
Read returns policy
TrailSurge Warranty+
1 year of cover UK support
Worth £159 Included
View warranty details Hide warranty details Warranty details Hide warranty details
What’s covered
Frame, forks, motor, controller, battery, charger and factory-fitted electrical and mechanical parts.
Cover & exclusions
Normal wear, accidental damage, misuse and unauthorised modifications are generally excluded.
How to claim
Contact our UK team with your order number and a few photos.
Manufacturer warranty · Koolux
Cover varies by model. Contact us for details.
Separate manufacturer terms apply. Warranty periods are not added together.
Road use notice:
This bike is over 250W and is for private land/off-road use only. Need a UK road-compliant option?
View road legal e-bikes
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Description
Powerful 750W brushless rear motor for Confident Riding
The KOOLUX X12PRO features a high-efficiency 750W brushless rear motor, delivering smooth acceleration and reliable torque for hills, city riding, and mixed terrain.
Long-Range Lithium-ion battery for Everyday Adventures
Designed to go the distance, the battery system provides a real-world range of up to 70–120 km depending on riding mode, terrain, and rider weight.
Comfort-Focused Design for Stability and Control
Wide tyres and a well-balanced frame help absorb road vibrations and uneven surfaces, keeping rides comfortable and confidence-inspiring.
Smart Display and Assist System
Ride with full control using a clear digital display showing speed, battery level, and distance. Multiple pedal-assist levels help tailor power delivery to your riding style.
Road-Legal Configuration
Supplied in a 25 km/h (road legal setting) configuration for UK compliance. Always follow local e-bike regulations.
Specifications
| Collection | Electric Bikes |
|---|---|
| Motor Power | 250W |
| Battery | 48V 13Ah |
| Top Speed | 15.5 MPH |
| Max Range | 43.5 Miles |
| Charging Time | 5-6 Hours |
| Wheel Size | 20 x 4.0" tyres |
| Brakes | Hydraulic Brakes |
| Bike Weight | 35.5 KG |
| Max Climb | 25" |
Size & Rider Fit
Check rider measurements and sizing before you order.
Maximum load
120 KG
Sizes are a guide. Rider proportions, footwear and setup can affect fit.
What’s Included in the Box?
1 x Koolux X12 Pro Electric Bike
1 x Charger
2X Keys
1 x Tool Kit
1 x User Manual
Spare Parts for This Model
We stock a range of spare parts in the UK and can source additional components for this model. Contact our team to check prices, compatibility and availability.
Frequently Asked Questions
Koolux X12 Pro Electric Bike
£759.99
