The 2025 Sur-Ron Ultra Bee 21kW is an advanced electric dirt bike that elevates off-road performance through significant enhancements in power, battery capacity, and overall design.

Key Specifications:

• Powertrain:

  • Motor Type: Permanent Magnet Synchronous Motor (PMSM)
  • Peak Power: 21 kW in Turbo mode; 18 kW in Sport mode
  • Peak Torque: 510 Nm (376 ft-lbs)
  • Top Speed: Approximately 95 km/h (59 mph)

• Battery:

  • Capacity: 74V/60Ah Lithium-Ion
  • Charging Time: Approximately 2.5 hours (20% to 80%)
  • Range: Up to 115 km (71.5 miles) at a constant speed of 50 km/h (31 mph)

• Dimensions and Weight:

  • Length/Width/Height: 2010 mm / 880 mm / 1180 mm
  • Wheelbase: 1380 mm
  • Ground Clearance: 315 mm
  • Seat Height: 910 mm
  • Curb Weight: 88.5 kg (195 lbs)

• Chassis and Suspension:

  • Frame: Forged Aluminum Alloy
  • Front Suspension: Optimized 37 mm inverted fork with 240 mm travel
  • Rear Suspension: Adjustable TR Intersect mono-shock with 240 mm wheel travel

• Braking System:

  • Front and Rear Brakes: 240 mm hydraulic discs

• Additional Features:

  • Riding Modes: Eco, Daily, Sport, Reverse, and Turbo
  • Traction Control: Sur-Ron Traction Control System (SRTC) with three adjustable levels
  • Primary Transmission: Enhanced system featuring a carbon fiber belt, forged pulleys, and tungsten carbide coating for increased durability
  • Motor Technology: Utilizes new HairPin winding technology for higher efficiency and improved heat dissipation

The 2025 Ultra Bee 21kW is designed for riders seeking a balance between lightweight handling and robust power output. Its advanced features and refined engineering make it a formidable choice for off-road enthusiasts aiming for enhanced performance and control.