This is one combined summary, not the individual rating of any one platform.
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.
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.
Send us the competitor's product link before ordering. We'll check the exact model, stock, total delivered price, UK company registration and valid UK VAT registration. All matches are subject to verification.
TrailSurge is a UK company and VAT registered too: Company No. 16935369 · VAT No. 521226239.
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
Options and charges are shown at checkout. Remote areas may take longer.
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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1 year of cover UK support
Worth £159 Included
Frame, forks, motor, controller, battery, charger and factory-fitted electrical and mechanical parts.
Normal wear, accidental damage, misuse and unauthorised modifications are generally excluded.
Contact our UK team with your order number and a few photos.
Manufacturer warranty period · 12 months against manufacturing defects.
Manufacturer cover · Confirmed production faults affecting the original frame and factory-installed electrical or mechanical components.
Separate manufacturer terms apply. Warranty periods are not added together.
From our Nuneaton showroom
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Quick Summary
The KOOLUX BK10S combines legal-class performance with portability. With its 250 W motor, 48 V battery, fat tyres, and foldable frame, it's ideal for commuting and light off‑road adventures.
Power & Range
The 250 W motor with ~60 Nm torque gives solid hill climbing and smooth acceleration. The battery supports up to approximately 90 km per charge in assist modes.
Comfort & Safety
Ride smoothly on fat tyres and front suspension. Hydraulic disc brakes offer reliable stopping—even in wet conditions.
Smart Design Features
Folds compactly for easy storage or transport. The display shows speed, battery level, and assist mode. Battery is easily removable and lockable.
Built for Everyday Use
Equipped with front/rear LED lights, mudguards, Shimano 7-speed gearing, and a stable, lightweight frame. Ready for daily commuting or weekend outings.
The fat-tyre format gives the bike a substantial, cushioned feel on mixed firm surfaces. It is well suited to riders who value a planted riding position and versatile leisure capability, rather than the lighter, narrower-tyre feel of a conventional city bicycle.
| Collection | Koolux Electric Bikes |
|---|---|
| Brand | Koolux |
| Motor Power | 250W |
| Battery | 48V 13AH |
| Top Speed | 15.5 MPH |
| Acceleration Method | Regular Pedalling + Pedal Assist + Throttle Acceleration |
| Max Range | 40 Miles |
| Charging Time | 7+ Hours |
| Shock Absorbers | Front |
| Wheel Size | 20inch x 4.0 Fat Tyre |
| Brakes | Dual Mechanical Disc Brakes |
| Gears | 7 Speed Shimano Gears |
| Bike Weight | 27KG |
| Max Climb | 15 degrees |
Check rider measurements and sizing before you order.
Sizes are a guide. Rider proportions, footwear and setup can affect fit.
This high‑capacity 48 V 13 Ah lithium battery delivers an impressive range of 35‑90 km, giving you the freedom to ride further. The detachable battery compartment includes a safety lock so you can remove it for charging without worry.
With a removable 48 V 12 Ah battery rated at 576 Wh, you can enjoy long rides and quick recharging. The 4 A fast‑charging system powers up in hours and ensures a maximum range of around 70 km.
A built‑in high‑strength steel shock absorber provides excellent cushioning and lubrication. The high‑pressure suspension fork smooths out bumps and potholes, giving you more control and comfort.
1 x Koolux BK10S Fat Tyre Electric Bike
1 x Charger
2 x Keys
1 x Tool Kit
1 x User Manual
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.
Proud to serve NHS staff and fire and rescue workers, and to support local police with e-bikes.
