Step-through 750W fat-tyre e-bike with a huge 48V 25Ah battery, 120 km range, hydraulic brakes and 4G app display.
The KOOLUX X7 is our biggest-battery single-pack e-bike — a step-through utility machine built for riders who want to stop thinking about charging. The 48V 25Ah battery (1,200 Wh) delivers a genuine 80-120 km of UK commuting between charges, and the low-step frame with front and rear cargo racks makes it as practical as it is powerful.
Long commutes (40 km+ round trip), cargo and shopping runs, riders who hate range anxiety, and anyone who wants a step-through frame without giving up power.
New to e-bikes? Read our UK buyer's guide, or see how the 750W unlock mode works in our UK e-bike law guide.
Free UK delivery · 2-year warranty · 1-5 day dispatch from UK stock.
| Motor Power | 750W |
| Battery | 48V 25Ah Lithium-ion (1,200 Wh) |
| Top Speed | 25 km/h (unlock 45 km/h) |
| Range | 80-120 km |
| Tyre Size | 20 × 4.0" Kenda |
| Brake System | Hydraulic Disc Brakes |
| Display | 4G Display with App |
| Climbing | 25° |
| Max Load | 120 kg (264 lbs) |
| Weight | 43 kg |
| Charging Time | 5-6 hours |
| Waterproof | IP54 |
| Unfolded Size | 177 × 70 × 122 cm |
| Colour | Black |
| Weight | 43 kg |
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