2025 Surron Ultra bee

The 2025 Surron Ultra Bee is an electric dirt bike featuring a 21kW peak motor, 74V/60Ah battery, around 59-60 mph top speed, and 9.4 inches of suspension travel, with key upgrades including a redesigned stronger suspension, upgraded internal components like hairpin motor tech, and a new 18-inch rear wheel for better off-road performance. It offers multiple modes (Eco, Sport, Turbo, Reverse, Crawl), a forged aluminum frame, and features like Surron Traction Control (SRTC) and Energy Regeneration (SERS). 

Key Specifications:

Motor: Permanent Magnet Synchronous Motor (PMSM) with 18kW sustained / 21kW peak power.

Battery: 74V / 60Ah Lithium-ion (4070Wh).

Top Speed: 59-60+ mph (90 km/h).

Range: Up to 70 miles (terrain dependent).

Charging: ~2.5 hrs (20-80%), ~4 hrs (0-100%).

Suspension: 37mm inverted front fork & TR Intersect rear shock, both with 9.4 inches of travel.

Frame: Forged aluminum alloy.

Wheels/Tires: 19" Front / 18" Rear 

Weight (Curb): ~195 lbs (88 kg).

Rider Aids: SRTC (Traction Control), SERS (Regenerative Braking), Reverse Gear, Crawl Mode. 

Key Upgrades for 2025 (vs. earlier models):

Suspension:  Stronger, gold-colored fork with enhanced damping and impact resistance.

Rear Wheel: New 18-inch rear wheel paired with a larger moto tire.

Drive System: Upgraded carbon fiber belt and tungsten carbide-coated pulleys for increased durability.

Motor/Controller: Hairpin motor technology and advanced controller for better efficiency and heat dissipation.