Ultra Bee

The SurRon Ultra Bee 12.5kW is a high-performance electric off-road bike engineered with a 74V battery platform and a 12.5kW peak output motor. It combines strong acceleration, high torque delivery, and lightweight construction in a mid-size electric chassis.

The advanced power system provides consistent output across varied terrain, while the reinforced frame and performance suspension are designed for off-road durability and stability. The Ultra Bee sits between lightweight electric trail bikes and full-size dirt bikes, offering a balanced platform with controlled power and responsive handling.

• Motor: PMSM 12,500W ($12.5\text{ kW}$)

• Max Torque: $440\text{ Nm}$ ($325\text{ ft-lb}$) at the wheel

• Top Speed: $56\text{ mph}$ ($90\text{ km/h}$)

• Acceleration: 0–31 mph ($50\text{ km/h}$) in just 2.3 seconds

• Range: Up to 87 miles (at a steady $15\text{ mph}$); real-world trail riding typically yields 45-55 miles.

• Battery Pack: 74V / 55Ah Lithium-ion (4,070Wh)
• Cell Type: High-performance 21700 cells
• Curb Weight: $187\text{ lbs}$ ($85\text{ kg}$) — roughly $50\text{ lbs}$
• Brakes: 240mm hydraulic discs (front and rear) with a race-inspired 4-piston system.