Power Meets Versatility: KOOLUX BK6S 4.0 Folding Electric Bike
The KOOLUX BK6S 4.0 takes everything riders loved about the 3.0 version—and levels it up. Designed for urban commuters and weekend explorers alike, this upgraded folding eBike is equipped with a powerful 48V 13Ah lithium-ion battery, offering extended range and stronger hill-climbing capability. Its enhanced front fork suspension system and wider 20×4.0 inch fat tires ensure greater comfort and stability on mixed terrain, whether you're cruising city streets or venturing off the beaten path. The BK6S 4.0 also features a refined aluminum alloy frame, Shimano 7-speed gearing, and an intuitive LCD display for real-time ride updates. With greater power, traction, and comfort packed into a foldable design, the BK6S 4.0 is your go-to upgrade for a smarter, stronger ride.
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Battery Capacity 48V 13Ah 624Wh
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Battery Type Lithium Ion Power Battery
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Charger 54.6V 2.0A
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Charging Time 6-7 hours
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Range 45-90 km
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Bike Weight 33.2/40 kg
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Speed Standard 25 km/h
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Load Capacity 120 kg
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Waterproof Level IP54
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Tires 20*4.0 inch
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Frame Aluminum Alloy
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Brakes Mechanical Brakes
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Suspension Front Fork Suspension
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Gearing Shimano 7 Speed
This bike is sold brand new with 12 months warranty
Comes as standard without throttle / restricted to 15.5mph
