Grafted 2023 Sur-Ron Ultra Bee

The 2023 Sur-Ron Ultra Bee is a high-performance electric off-road motorcycle designed to bridge the gap between lightweight e-bikes and full-sized dirt bikes. Building upon the success of the Light Bee and Storm Bee models, the Ultra Bee introduces a more robust platform tailored for serious trail and enduro riding.

🔧 Key Specifications

• Motor: Permanent Magnet Synchronous Motor (PMSM)

• Peak Power: 12.5 kW (approximately 16.8 hp)

• Peak Torque: 440 Nm (325 ft-lbs)

• Top Speed: 90 km/h (56 mph)

• Max Range: 140 km (87 miles) at 40 km/h, depending on terrain

• Battery: 74V/55Ah Lithium-Ion

• Charging Time: Approximately 4 hours (0–100%)

• Curb Weight: 85 kg (187 lbs)

• Dimensions: 2,010 mm (L) x 880 mm (W) x 1,178 mm (H)

• Seat Height: 910 mm (35.8″)

• Ground Clearance: 318 mm (12.5″)

• Wheelbase: 1,380 mm (54.3″)

• Max Load: 100 kg (220 lbs)

🛠️ Chassis & Suspension

• Frame & Swingarm: Forged aluminum alloy for strength and lightweight performance

• Front Suspension: 37 mm inverted fork with 240 mm (9.4″) of travel, fully adjustable

• Rear Suspension: Adjustable TR Intersect monoshock with 240 mm wheel travel

• Brakes: 240 mm hydraulic disc brakes front and rear

• Wheels: 19″ wire-spoked rims with off-road tires (80/100-19 front, 90/90-19 rear)

⚙️ Rider Aids & Features

• Riding Modes: Sport, Daily, Eco, Reverse

• Traction Control: Sur-Ron Traction Control System (SRTC)

• Regenerative Braking: Sur-Ron Energy Regenerative System (SERS)

• Reverse Gear: Button-activated

• Lighting: LED headlight and tail light

• Storage: Integrated compartment under the seat for charger

• Instrumentation: LCD digital dash displaying speed, battery level, and riding mode

🌍 Design Philosophy

The Ultra Bee embodies Sur-Ron’s design concept of “Balancing on the Cutting Edge,” combining a lightweight forged aluminum alloy frame with a powerful 12.5 kW motor. This results in an even weight distribution and a curb weight of just 85 kg (187 lbs), making it agile and responsive on various terrains. The 240 mm suspension travel front and rear ensures a smooth ride over rough trails, while the 19″ wheels provide stability and control.

💡 Additional Features

• USB Port: Single USB-2.1A outlet for device charging

• Cooling System: Air-cooled battery pack with a cycle life of approximately 1,500 charges, maintaining over 80% health

• Homologation: Available in both off-road (Ultra Bee X) and street-legal (Ultra Bee T) variants

🏁 Performance Highlights

• Acceleration: 0–50 km/h (0–30 mph) in 2.3 seconds

• Top Speed: 56 mph (90 km/h)

• Range: Up to 87 miles (140 km) on a full charge at a consistent 25 mph (40 km/h)

• Weight: Lightweight design at 85 kg (187 lbs)

• Versatility: Suitable for both off-road trails and urban commuting