Surron ultra bee

Sur-Ron Ultra Bee – The Ultimate Mid-Weight Electric Motocrosser

Bridging the gap between agility and raw power, the Sur-Ron Ultra Bee is engineered for riders who demand full-size performance without the weight of a traditional gas bike. This “Forest Green” beast is built on Sur-Ron’s 4th generation powertrain, delivering explosive torque and a sophisticated riding experience that dominates technical trails and MX tracks alike.

Performance Specs & Tech

• Instant Power: Features a 12.5 kW mid-drive motor (up to 21 kW peak on HP models) delivering up to 440 Nm of peak torque, propelling you from 0–50 km/h in just 2.3 seconds.

• High-Capacity Battery: Equipped with a 74V / 55Ah lithium-ion pack, offering a real-world range of up to 140 km (at cruising speeds) and a top speed of 90 km/h (56 mph).

• Advanced Traction Control: Includes the SRTC (Surron Traction Control System) and BERS (Braking Energy Regeneration System) for precision handling and maximum efficiency.

• Four Riding Modes: Switch on the fly between Eco, Daily, Sport, and Reverse to match your terrain and battery needs.

Pro-Grade Build Quality

• Forged Aluminum Frame: A lightweight, high-strength chassis that brings the total curb weight to just 85 kg, making it incredibly flickable in the air and stable through rock gardens.

• Long-Travel Suspension: Fully adjustable KKE 37mm inverted forks and a rear monoshock, both offering 240mm (9.4″) of travel for soaking up massive hits.

• Superior Stopping Power: Bilateral 4-piston hydraulic disc brakes with 240mm rotors provide consistent, one-finger braking performance in mud or dust.

• Full-Size Ergonomics: A 910mm seat height and 19-inch front/rear wheels (fitted with aggressive CST mud tires) provide the ground clearance and stance of a professional dirt bike.

Why the Ultra Bee?

The Ultra Bee is the gold standard for electric off-roaders. It offers the silent “stealth” advantage for trail riding while packing enough punch to clear triples at the track. With an onboard charger storage compartment under the seat and a 4-hour fast-charge time, it’s designed for riders who spend more time on the dirt and less time in the garage.

Quick Specs for the Listing:

• Top Speed: 90 km/h (56 mph)

• Max Range: ~140 km

• Weight: 85 kg (187 lbs)

• Charge Time: 4 Hours (Fast Charge)

• Wheel Size: 19″ Front / 19″ Rear (MX version)