Can the Koolux BK6S 4.0 battery be removed for indoor charging?

Yes. The lockable battery can be charged on the bike or removed and taken indoors. Support it securely as it slides out, use the supplied charger on a dry, stable surface and make sure it clicks and locks fully back into position before riding.

How does the Koolux BK6S 4.0 differ from the BK6S Pro?

The standard BK6S 4.0 uses one battery and is the simpler choice for typical rides. The BK6S Pro carries two batteries with 23.4Ah combined capacity, giving it a longer-distance focus but adding cost and weight.

Will the Koolux BK6S 4.0 fit a shorter or taller rider?

Published guidance places it around 165–195 cm, but height alone does not guarantee comfort. Its 20 × 4-inch tyres and folding frame still create a fairly tall, broad bike. Check that you can stand over the frame, reach both brake levers and achieve a safe knee bend at the lowest suitable saddle position.

Is the Bicicletta Elettrica Koolux Bk6S 4.0 easy to assemble?

The Bicicletta Elettrica Koolux Bk6S 4.0 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 Bicicletta Elettrica Koolux Bk6S 4.0 water resistant?

The Bicicletta Elettrica Koolux Bk6S 4.0 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 BK6S 4.0 Electric Bike 500W 48V 15Ah

Bicicletta Elettrica Koolux Bk6S 4.0

Motor

500W

Battery

15AH

Speed

24 KM/H

Range

66 KM

€1.069,95 €785,95

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Klarna €261,98 ×3

Clearpay €196,49 ×4

PayPal €261,98 ×3

Finance

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

Shop Pay

From €65,50/mo 12 months at 0% interest Up to 24 months available

Varianti prodotto:

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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 Bicicletta Elettrica Koolux Bk6S 4.0 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 Bicicletta Elettrica Koolux Bk6S 4.0 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 Bicicletta Elettrica Koolux Bk6S 4.0? 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 .

Description

Riepilogo veloce
La KOOLUX BK6S 4.0 combina una robusta trazione con pneumatici grassi con un potente motore da 500 W e una batteria da 48 V 15 Ah ad alta capacità. Progettato sia per le strade urbane che per i percorsi fuoristrada, offre manovrabilità stabile e prestazioni affidabili.

Erogazione di potenza fluida
Il motore nel mozzo da 500 W offre un'accelerazione reattiva e una pedalata assistita fluida su sette livelli, consentendoti di affrontare salite e venti contrari senza sforzo. L'acceleratore a pollice fornisce potenza istantanea quando hai bisogno di una spinta.

Comfort e controllo
Gli pneumatici larghi da 4.0″ e le sospensioni anteriori assorbono gli urti e mantengono l'aderenza su superfici sconnesse o irregolari. I doppi freni a disco meccanici garantiscono una potenza frenante costante e controllata in qualsiasi condizione atmosferica.

Sistema di batterie intelligenti
Una batteria rimovibile e bloccabile da 48 V 15 Ah offre capacità a lungo raggio e comoda ricarica quando non è bici. I circuiti di protezione integrati proteggono da sovraccarico, scaricamento eccessivo e surriscaldamento per un utilizzo sicuro e affidabile.

Tecnologia di cui ti puoi fidare
Il chiaro display LCD retroilluminato mostra a colpo d'occhio la velocità, il livello della batteria, la distanza percorsa e la modalità di assistenza. I semplici controlli sul manubrio ti consentono di cambiare i livelli di assistenza e monitorare facilmente i dati di guida.

Costruito per l'uso quotidiano
Con il suo telaio resistente, la stabilità degli pneumatici grassi e il semplice design pieghevole per il montaggio su portapacchi, la BK6S 4.0 è pronta per gli spostamenti quotidiani, le avventure del fine settimana e tutto il resto, ovunque tu scelga di guidare.

Specifications

Collection	Biciclette Elettriche Koolux
Brand	Koolux
Bike Type	Città e pendolari, Pieghevole, Pneumatico grasso
Motor Power	500W
Battery	15AH
Top Speed	15,5 miglia orarie
Max Range	41 Miles
Charging Time	5+ ore

Shock Absorbers	Fronte
Brakes	Idraulico anteriore e posteriore
Bike Weight	27 kg
Max Climb	15 gradi
Max Rider Weight	150 kg
Dimensions
Built Dimensions	182 × 60 × 110 cm (L × W × H)
Box Dimensions	93 × 55 × 76 cm (L × W × H)

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.