Will the folded Koolux BK10S fit in a car boot?

Its published folded dimensions are about 92 × 50 × 80 cm, which fits many larger boots once measured carefully. At roughly 27.7–29.3 kg it remains a heavy one-person lift, so protect the controls, use good lifting technique and avoid assuming a small hatchback opening will accept it.

How much maintenance do the Koolux BK10S fat tyres need?

The 20 × 4-inch tyres are pneumatic, so they need pressure checks and can puncture. Inspect the sidewalls and tread, remove embedded debris and avoid riding underinflated; broad tyres can hide pressure loss until handling and battery use worsen.

Should I choose the Koolux BK10S or the longer-range X7?

Choose the BK10S for its smaller 48V 13Ah battery, lower weight and folding format when storage matters. Choose the X7 for its much larger 48V 25Ah battery and hydraulic brakes when longer rides and stronger braking are worth the extra bulk; the current X7 specification is around 43 kg.

Is the Koolux Bk10S Fat Tyre Electric Bike easy to assemble?

The Koolux Bk10S Fat Tyre Electric Bike arrives mostly assembled. Final setup normally includes aligning and securing the handlebars, fitting the pedals and completing essential safety checks. Allow approximately 20–30 minutes, or select our professional assembly and PDI service.

Is the Koolux Bk10S Fat Tyre Electric Bike water resistant?

The Koolux Bk10S Fat Tyre Electric Bike is not fully waterproof. Avoid prolonged exposure to heavy rain, and never submerge or pressure wash the bike or its electrical components. After riding in wet conditions, wipe the bike dry and store it in a dry, sheltered location.

Koolux BK10S Fat Tyre Electric Bike 48V 13Ah Koolux

Koolux Bk10S Fat Tyre Electric Bike

Motor

250 W,500 W

Battery

48V 13AH

Speed

24 KM/H

Range

56 KM

€1.184,95 €842,95

Sold out

Klarna €280,98 ×3

Clearpay €210,74 ×4

PayPal €280,98 ×3

Finance

From —/mo 24, 36 or 48 months at 15.9% APR 6 or 12 months at 0% interest

Shop Pay

From €70,25/mo 12 months at 0% interest Up to 24 months available

Variantes du produit:

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Out of stock

This item is currently unavailable
Contact us for the latest restock estimate
We can recommend a suitable in-stock alternative

Click & Collect Collection from our Nuneaton workshop

Collect from our Nuneaton workshop

Collection is available by appointment from our Nuneaton workshop. The preparation time depends on where the product is currently stored. Contact us before ordering for the latest availability, or place your order and we will confirm when it is ready to collect.

Transfer required to Nuneaton Usually 5–7 working days

Products stored at another warehouse normally require 5–7 working days to reach our workshop. We will confirm as soon as the item is ready and arrange your collection appointment.

Best Price Guaranteed Found the same product for less?

Best Price Guaranteed

Seen the exact same product advertised for less? Send us the live offer before you order and we’ll check whether we can match it.

We consider genuine UK retailer offers for items that are in stock
The model, specification, colour, condition and delivery terms must be like-for-like
Marketplace or private sellers, used or clearance items, private codes, finance-only offers, bundle deals and obvious errors are excluded

Usually answered within 24 hours. Need a quicker answer? WhatsApp us or call 0800 099 6187.

Why Buy From TrailSurge? UK showroom, product support & aftercare

Buy your Koolux Bk10S Fat Tyre Electric Bike with UK-based support

TrailSurge is a UK retailer with a showroom and workshop in Nuneaton. Our team can help before you order and continue supporting you after your Koolux Bk10S Fat Tyre Electric Bike arrives.

UK-based customer support before and after your purchase
Showroom and workshop in Nuneaton
Help with product questions, setup, parts and aftercare
Tracked UK delivery with support if you need help with your order
Speak to a real member of our team before placing your order

Why buy through TrailSurge? For the best UK-based support and aftercare, we recommend buying through TrailSurge rather than ordering directly from overseas manufacturers or China-based sellers, where returns, warranty support and parts handling can be more difficult.

Need help with the Koolux Bk10S Fat Tyre Electric Bike? Ask our team a question before ordering.

WhatsApp Us Call Us 0800 099 6187

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 .

Check your fit

Size & Rider Fit

Maximum Rider Weight: 120 kg

Trail Surge Warranty Plus FULL OFFICIAL WARRANTY INCLUDED UK-based support alongside the manufacturer warranty TRAILSURGE COVER 12 months

TWO LAYERS OF PROTECTION

More confidence after you buy

TrailSurge Warranty+ gives you a direct UK warranty alongside the product’s manufacturer warranty.

01 TRAILSURGE WARRANTY +

12 months of TrailSurge support

UK-based fault support
Battery, motor and frame fully covered.
Repair, parts or another suitable solution where eligible

02 Koolux WARRANTY

Manufacturer warranty period 12 months against manufacturing defects.

Manufacturer cover

Confirmed production faults affecting the original frame and factory-installed electrical or mechanical components.

Typical component protection Eligible faults affecting the frame and forks, motor and drive system, controller, battery and BMS, charger, wiring, display, gears, brakes and factory-fitted controls.

Description

Résumé rapide
Le KOOLUX BK10S allie performances d'un vélo utilitaire à portabilité. Avec son moteur de 250 W, sa batterie de 48 V, ses pneus larges et son cadre pliable, il est idéal pour les trajets quotidiens et les escapades hors route occasionnelles.

Puissance et autonomie
Le moteur de 250 W, avec un couple d'environ 60 Nm, assure une bonne motricité en côte et une accélération fluide. La batterie offre une autonomie d'environ 90 km par charge en modes d'assistance.

Confort et sécurité
Roulez en toute fluidité grâce aux pneus larges et à la suspension avant. Les freins à disque hydrauliques offrent un freinage fiable, même par temps humide.

Caractéristiques de conception intelligentes
Se replie de façon compacte pour un rangement et un transport faciles. L'écran affiche la vitesse, le niveau de la batterie et le mode d'assistance. La batterie est facilement amovible et verrouillable.

Conçu pour une utilisation quotidienne
Équipé de feux LED avant et arrière, de garde-boue, d'une transmission Shimano à 7 vitesses et d'un cadre stable et léger. Idéal pour les trajets quotidiens ou les sorties du week-end.

Specifications

Collection	Vélos Électriques Koolux
Brand	Koolux
Bike Type	Pneus larges, Ville et banlieue, Livraison et fret
Motor Power	250 W
Battery	48V 13AH
Top Speed	15,5 MPH
Acceleration Method	Regular Pedalling + Pedal Assist + Throttle Acceleration
Max Range	35+ miles
Charging Time	Plus de 7 heures

Shock Absorbers	Devant
Wheel Size	Pneu Fat Tyre 20 pouces x 4,0
Brakes	Hydraulique avant et arrière
Gears	Dérailleur Shimano à 7 vitesses
Bike Weight	27 kg
Max Climb	15 degrés
Max Rider Weight	120 kg
Dimensions
Built Dimensions	165 × 58 × 116 cm (L × W × H)
Box Dimensions	143 × 30 × 70 cm (L × W × H)

A man rides a white electric bike on a paved path through a park. Tall buildings are visible in the background. Text on the image highlights the bike’s adjustable speed settings up to 45 km/h and compliance with regulations.

Batterie au lithium 48 V 13 Ah – Longue autonomie et sécurité

Cette batterie au lithium haute capacité de 48 V et 13 Ah offre une autonomie impressionnante de 35 à 90 km, vous permettant d'explorer de plus longues distances. Le compartiment de la batterie, amovible et doté d'un verrou de sécurité, peut être retiré pour la recharge en toute tranquillité.

A graphic of an electric bike’s battery shows its internal cells glowing green. Text highlights features: 48V/13Ah capacity, 5–7h charging time, 25–35KM range per charge, and Li-ion battery with a “Smart Chip.”.

Batterie amovible 48 V 12 Ah – Charge rapide et haute capacité

Grâce à sa batterie amovible de 48 V et 12 Ah (576 Wh), profitez de longues balades et d'une recharge rapide. Le système de charge rapide 4 A permet une recharge complète en quelques heures et garantit une autonomie maximale d'environ 70 km.

Fourche à suspension haute pression – Conduite souple

Un amortisseur intégré en acier haute résistance assure un excellent amorti et une lubrification optimale. La fourche à suspension haute pression absorbe les chocs et les irrégularités de la route, pour un contrôle et un confort accrus.