Head to head

EM5 UltraVSLight Bee X

Comparing 2 of 3

Show source notes

Valtinsu · 2026

EM5 Ultra

Sur-Ron · 2025

Light Bee X

21″ front wheel swap(est.)

CAdd a bike

Summary

Claimed figures · blanks excluded

Lightest: Light Bee X126 lb57 kg
Best power-to-weight: Light Bee X140 W/kg
Most front travel: Light Bee X198 mm
Lowest price (USD): EM5 Ultra$2,199

Measured against each other

Peak power

EM5 Ultra8 kW
Light Bee X8 kW

Power-to-weight

Δ 17 W/kg

EM5 Ultra123 W/kg
Light Bee X140 W/kg

Battery capacity

EM5 Ultra—
Light Bee X2,400 Wh

Weight

Δ 17 lb7.9 kg

EM5 Ultra143 lb64.9 kg
Light Bee X126 lb57 kg

Shorter is lighter.

Front travel

Δ 48 mm

EM5 Ultra150 mm
Light Bee X198 mm

Rear travel

EM5 Ultra—
Light Bee X211 mm

Size & stance

To scale, lined up at the rear axle. Rims shown without tires. Hover a bike below to isolate it.

Full specifications

Price

PricePrices move. Check the date and currency.

$2,199

$3,799

Motor & performance

Peak powerPeak, not continuous. It's a burst number that brands measure in different ways.

8 kW11 hp

Rated powerWhat the motor can sustain. Closer to what you feel on a long climb.

—

3 kW4 hp

Power-to-weightCalculated by Mesa Project from claimed peak power and claimed weight.

123 W/kgCALC

140 W/kgCALC

Torque (as published)Brands quote torque at the motor or at the rear wheel. Read the note before comparing.

—

266 Nm196 lb-ft

Top speed

56 mph90 km/h

47 mph75 km/h

Battery & charging

Battery capacityWatt-hours is the fuel-tank number. Volts × amp-hours.

—

2,400 Wh2.4 kWhCALC

Pack voltage

—

60 V

Pack amp-hours

25 Ah

40 Ah

Swappable batteryA rider-removable pack that can be replaced with a compatible spare. Does not imply tool-free removal or compatibility across models.

—

Yes

Range claimBrands test at different steady speeds, so we don't crown a winner. Trail range will be lower.

75 mi121 km

47 mi75 km

Charge time

—

2 h

Chassis

WeightWhat you'll be lifting out of a rut. Check whether the battery is included.

143 lb64.9 kg64.9 kg143 lb

126 lb57 kg57 kg126 lb

Seat heightUnladen. Sag brings it down once you sit on it.

800 mm31.5 in

828 mm32.6 in

Ground clearance

231 mm9.1 in

269 mm10.6 in

Wheelbase

1,059 mm41.7 in

1,255 mm49.4 in

Frame

—

Forged aluminum alloy

Suspension

Fork

Front hydraulic shock absorbers with a 5.9-inch (150 mm) stroke

Inverted coil-spring hydraulic fork

Front travel

150 mm5.9 in

198 mm7.8 in

Shock

Rear adjustable air suspension dampers with a 2.0-inch (50 mm) stroke

Multi-link rear suspension, fully adjustable

Rear travel

—

211 mm8.3 in

Wheels & brakes

Front wheel

17″

19″CALC

Rear wheel

14″

18″CALC

Front tire

—

70/100-19

Rear tire

—

3.00-18

Front brake

—

Rear brake

—

Electronics

Ride modes

Eco - Drive - Sport

Sport · Eco

Regen braking

—

Yes, in Sport mode

Display

Smarter VA LCD display

—

Ownership

Warranty

1-year limited warranty

1 year limited

Highlighted = best among these bikes, where “best” is clear-cut. Range claims and torque are never ranked, because brands measure them differently.