2023 Surron ultra bee

Overview

The 2023 Ultra Bee is the mid‑sized powerhouse in Surron’s electric off‑road line, slotting between the nimble Light Bee and bigger Storm Bee. Freshly engineered with insights from its predecessors and Surron’s off‑road race efforts, it delivers trail‑ready performance with street-worthy precision

It’s designed under the philosophy “Balancing on the Cutting Edge”—a forged aluminium‑alloy chassis married to a 4th‑generation 12.5 kW powerplant, striking a perfect weight power ratio: ~85 kg (187 lb) and near 50:50 weight distribution

Powertrain & Performance

Motor: Permanent-magnet synchronous motor (PMSM)

Peak Power: 12.5 kW (~17 hp)

Peak Torque: 440 Nm (325 ft‑lb)

Acceleration: 0–50 km/h (0–31 mph) in ~2.3 seconds

Top Speed: 90 km/h (56 mph)

Range: Up to 140 km (87 mi) at a steady 40 km/h (25 mph)—real-world trail results vary (30–60 miles)

Battery: 74 V/55 Ah Lithium‑ion (4,070 Wh), ~20.5 kg, high power density (~200 Wh/kg) and durable battery chemistry for >1,500 cycles at 80% capacity

Charging: Full charge in ≈4 hours from 0–100 %

Rider Aids & Electronics

Riding Modes: Sport, Daily, Eco (plus selectable reverse gear)

Traction Control: Surron Traction Control (SRTC) — three settings for off‑road adaptability

Regenerative Braking: Surron Energy Regenerative System (SERS)

Throttle Maps: Multiple maps per mode—Sport’s maps can be aggressive

Instrumentation: LCD digital dash, USB port (2.1 A), LED lighting

Chassis & Suspension

Frame & Swingarm: Forged aluminum alloy

Suspension:

Front: 37 mm inverted fork, 240 mm travel, fully adjustable

Rear: TR Intersect monoshock, 240 mm travel

Riders applaud its ability to “eat bumps” and “erase roots and rocks”

Brakes: Dual 240 mm hydraulic discs; sport braking and regen offer flexible stopping power

Dimensions & Ergonomics

Curb Weight: ~85 kg (187 lb); with load capacity for rider/gear up to ~100 kg (220 lb)

Ground Clearance: 318 mm (12.5″); Wheelbase: 1,380 mm (54.3″); Seat Height: 910 mm (35.8”)

Wheels/Tires: Stock 19″ × 19″ wire-spoked off-road, 80/100 front and 90/90 rear; riders installing 21/18 for more agility

Practical Features

Under‑seat storage houses the charger—convenient for charging on the go

On‑board toolkit size fits under battery cover; well-received in assembly and maintenance

 Real‑World Feedback

“Even with the extra weight this thing is a beast, really wants to rip your arms off in sport mode if you aren’t prepared.”

“I’ve now logged just about 200 miles… holy crap this thing is still impressively powerful and fast… suspension is fantastic… brakes are also fantastic.”

“Bike is awesome at slower speeds… reverse is super useful… low weight helps a lot vs larger bikes.”

Some users note minor fragility in stock setup: paint chips, battery shift under heavy hits, handlebar and shock tuning needs

 Strengths & Use Cases

Powerful, rapid acceleration and smooth torque delivery

Top-tier suspension and braking for trail and light motocross

Electrically flexible: modes + regen + traction control

Low‑maintenance: no oil, minimal servicing compared to ICE bikes

Good ergonomics for average to taller riders (5′8″–6′)

 Downsides & Upgrades

Weight (~187 lb) makes it less nimble than Light Bee—some say it curbs stunt-fun

Stock wheel setup limit tight-turn grip—many switch to 21/18 wheels

Some plastic/paint and battery mounts feel prone to scuffs or vibration—users patch or protect

Real-world off-road range often 30–40 mi; street setups can stretch to 50+ mi