2025 Surron Ultra Bee HP – Desert Brown | Key Features

Power & Performance

To begin with, the 2025 Surron Ultra Bee HP is engineered to deliver explosive performance while maintaining precise control:

• 21 kW motor producing 511 Nm of torque for instant, aggressive acceleration
• Top speed of 95 km/h (59 mph) for thrilling on- and off-road capability

Battery Capacity & Riding Range

Equally important, the Ultra Bee HP features a high-capacity battery designed for extended adventures:

• 74V – 60Ah lithium battery for consistent, high-output power
• Up to 140 km range when cruising at 40 km/h

Chassis & Convenience Features

In addition, practical upgrades enhance durability and everyday usability:

• New and improved front fork for better handling and stability
• Under-seat charger storage for convenient transport and quick access

New Features & Performance Enhancements

Most notably, the Ultra Bee HP introduces advanced technologies that elevate both power delivery and rider control:

Power Boost & Control Systems

• Turbo Button: Instantly unleashes the full 21 kW peak power on demand
• Crawling Function: Offers refined low-speed control for technical off-road terrain
• Advanced MTPA/MTPV Controller: Delivers smarter, more efficient power management

Motor & Efficiency Upgrades

Furthermore, the upgraded drivetrain improves efficiency and thermal performance:

• Hairpin motor design for improved efficiency and rapid heat dissipation
• 0–59 mph capability, combining lightweight construction with ferocious acceleration

Suspension System Improvements

To further enhance ride quality, the suspension system has been comprehensively upgraded:

• 50% stronger gold front fork with uniform wall thickness for increased rigidity
• Upgraded damping and hydraulic buffers, resulting in 30% better impact resistance

Primary Drive System Overhaul

Meanwhile, the primary drive has been redesigned for smoother power transfer and long-term durability:

• Carbon fiber belt paired with forged pulleys for reduced friction
• Tungsten carbide pulley surfaces, providing three times the wear resistance

Range & Charging Convenience

When it comes to real-world usability, the Ultra Bee HP excels in efficiency and fast charging:

• Estimated range: Up to 70 miles at reduced speeds
• Charge time: 20% to 80% in approximately 2.5 hours

Design & Aesthetic Enhancements

Beyond performance, the Ultra Bee HP features refined styling and structural upgrades:

• Sleek Desert Brown finish, also available in Carbon Black
• Gold-accented front fork and guard plate decals for a premium appearance
• Custom 18-inch rear wheel set for improved traction and stance
• Slight weight increase (8 lbs) to enhance durability and power delivery

Ride Modes & Adjustable Controls

To adapt to a wide range of riding conditions, multiple modes and traction settings are included:

• Eco / Daily / Sport / Reverse / Turbo ride modes
• Three-level adjustable crawling control for technical riding scenarios

Technical Specifications

Core Specs

• Motor: PMSM with MTPA/MTPV controller
• Max Power: 21 kW (Turbo) / 18 kW (Sport)
• Max Torque (at wheel): 376.9 ft-lbs
• Battery: 74V / 60Ah lithium-ion
• Top Speed: 59 mph

Dimensions & Chassis

• Seat Height: 35.8 in
• Ground Clearance: 12.4 in
• Wheelbase: 54.3 in
• Frame: Forged aluminum alloy

Wheels, Suspension & Weight

• Front Tire: 80/100-19 off-road
• Rear Tire: 100/90-18 off-road
• Front Fork Travel: 9.4 in
• Rear Shock Travel: 3.3 in (9.4 in wheel travel)
• Throttle Curve: Three adjustable settings
• Rider Weight Capacity: 220 lbs
• Weight: 195 lbs (dry)

Smart Electronic Rider Aids

Finally, advanced electronic systems enhance safety and control:

• SRTC and BERS assist systems for traction management and regenerative braking

Instructions: Settings & ASR Setup

Step 1: Power On & Enter Settings Mode

First, place the kickstand down and power on the bike. Then, press and hold the Ready and ASR buttons simultaneously for three seconds until the display shows the letter B followed by a number.

Step 2: Navigating the Settings Menu

Next, tap ASR to move through the settings. To change a value, tap Ready.

Step 3: Settings Overview

The following options allow you to fine-tune performance and safety systems:

• B0–B5: Brake regeneration (activates under 95% battery in Sport mode)
• E0–E5: Engine coasting regeneration
• A1–A3: Anti-Slip traction control (ASR)
• P0–P1: Throttle pause when braking
• 8 / C1: Crash cutoff (C1 disables motor if the bike tilts excessively)
• F1–F3: Throttle sensitivity in Sport mode
• T0–T1: Diagnostic testing mode
• U1–U3: Charging speed control for utility power

How to Set Up ASR (Anti-Slip Traction Control)

Activating ASR

To enable ASR for steep climbs or slippery terrain, press the ASR button three times in a row. Once active, the ASR indicator light will turn green.

Understanding ASR Strength Levels

Meanwhile, the right-side instrument display shows traction strength:

• One bar: Light assistance (still allows short wheelies)
• Three bars: Maximum traction control

Adjusting ASR While Riding

While riding, you can fine-tune ASR in real time:

• To toggle ASR on or off, press the ASR button three times
• To adjust strength, hold ASR and then double-click the reverse (R & S) button

Altogether, these features and settings help you fully unlock the potential of the 2025 Surron Ultra Bee HP, delivering a refined balance of power, control, and advanced electronic performance.