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Koolux X12 Electric Bike
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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.
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- ShowroomVisit by appointment
- Repairs workshopOn-site servicing
- Our own stockDispatched by us
- NHS staff
- Local police
- Fire & rescue
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Found the same product for less at a genuine UK-registered, VAT-registered retailer? Send us the listing and we'll check if we can match their price.
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TrailSurge is a UK company and VAT registered too: Company No. 16935369 · VAT No. 521226239.
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Trail Surge Ltd · Unit 62, Centenary Business Centre, Nuneaton, CV11 6RY
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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.
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TrailSurge Warranty+
1 year of cover UK support
Worth £159 Included
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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.
From our Nuneaton showroom
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Description
Powerful 500W brushless rear motor for Confident Riding
The KOOLUX X12 features a high-efficiency 500W 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 55–120 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 |
|---|---|
| Brand | Koolux |
| Motor Power | 500W |
| Battery | 48V 13Ah |
| Top Speed | 28 MPH |
| Max Range | 37 Miles |
| Charging Time | 7-8 Hours |
| Wheel Size | 20*4.0 inch |
| Brakes | Hydraulic Brakes |
| Bike Weight | 30 KG |
| Max Climb | 25" |
Size & Rider Fit
Check rider measurements and sizing before you order.
Sizes are a guide. Rider proportions, footwear and setup can affect fit.
What’s Included in the Box?
1 x Koolux X12 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.
