The Surron Ultra B (likely referring to Ultra Bee HP performance model) features a 5000W high-torque mid-drive motor with peak power outputs reaching 12kW, delivering 44 Nm of instant torque for aggressive hill climbs. Using a 72V 45Ah lithium-ion battery, it achieves 120 km urban range and supports DC fast charging (0-80% in 1.5 hours). With a 2210mm wheelbase and 270mm ground clearance, its forged aluminum frame maintains a Surron Ultra Bee Performence lightweight 39kg structure while supporting 100kg payload capacity. Advanced features include multiple riding modes (Eco/Rain/Sport) and regenerative braking.
What distinguishes the Ultra B’s motor system?
The 5000W mid-drive motor employs 3-phase sinusoidal control for precise throttle modulation, outperforming hub motors in torque delivery (44Nm vs. typical 30Nm). Its IP67-rated casing withstands full submersion up to 1 meter for 30 minutes – critical for hardcore off-roading through mud/water obstacles.
Compared to competitors like KTM Freeride E-XC, the Ultra B’s motor runs 15°C cooler under load thanks to liquid-cooling channels in its stator windings. Pro Tip: Clean motor ventilation ports after every 20 riding hours – dust accumulation reduces heat dissipation efficiency by 40%.
Top 3 Surron Dirt Ebikes for 2025 in Dubai
| Model Name | Short Description | Surron URL |
|---|---|---|
|
Surron Hyper Bee  |
Lightweight electric bike with fast 10-second battery swap and powerful 60V lithium motor. | Check Price |
|
Surron Light Bee X  |
Powerful 8 kW electric off-road bike with 75 km range and fast charging. | Check Price |
|
Surron Ultra Bee  |
Powerful 12.5KW motor, 140 km range, 74V 55AH battery, fast charging, all-terrain ready. | Check Price |
How does the 72V battery perform in extreme conditions?
Surron’s custom 72V 45Ah LiNiCoMnO₂ battery maintains 95% capacity retention at -10°C through self-heating PTC elements – a 25% improvement over standard LiFePO4 packs. The modular design allows hot-swapping batteries in 90 seconds using their patented magnetic coupling system.
| Parameter | Ultra B | Light Bee X |
|---|---|---|
| Energy Density | 185 Wh/kg | 160 Wh/kg |
| Cycle Life | 1500 cycles | 1200 cycles |
Real-world testing showed 82 km range at 35 km/h continuous speed with 70kg payload. For example, Dubai desert riders typically get 4-5 hours runtime doing technical dunes – half the theoretical maximum due to constant high-power demands.
Surron Dubai Expert Insight
FAQs
Not legally stock – while capable of 85 km/h derestricted, UAE regulations require type approval for road use above 50 km/h. We offer DOT-certified lighting kits for street legal conversion.
What maintenance intervals apply?
Lubricate drive chain every 300 km (desert) / 500 km (street). Battery calibration every 50 cycles ensures capacity metering accuracy within 3% deviation – use our Dubai service center’s dedicated calibration rigs for optimal results.