KOOLUX BK6S 4.0 750W Folding E-Bike

The KOOLUX BK6S 4.0 is for riders who refuse to compromise. With a serious 750W motor, fast-charging battery and a folding design that doesn't sacrifice performance, it's the e-bike that powers through UK terrain.

Power Meets Portability

• 750W brushless motor — class-leading power for any hill or headwind.


• 48V 13Ah lithium battery — proven reliability from a trusted cell type.


• Front & rear disc brakes — responsive, confident braking even at speed.


• Folding design (93 × 55 × 76 cm) — powerful AND portable for train commutes.


• 20" × 4.0" chunky tyres — grip on gravel, grass, snow-covered paths.


• 25° climbing ability — no hill is too steep.

Ideal for

Off-road adventurers, e-MTB enthusiasts, delivery riders and anyone who wants maximum power in a foldable form factor.

High-end performance · Free UK delivery · 2-year warranty · Ships 1-5 days.