Head to head

M2VSUltra Bee

Comparing 2 of 3

Show source notes

Stage2 · 2026

21″ front wheel swap(est.)

Sur-Ron · 2023

Ultra Bee

21″ front wheel swap(est.)

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Summary

Claimed figures · blanks excluded

Most peak power: M214 kW
Biggest battery: Ultra Bee4,070 Wh
Lowest price (USD): M2$3,800

Measured against each other

Peak power

Δ 1.5 kW

M214 kW
Ultra Bee12.5 kW

Power-to-weight

M2—
Ultra Bee147 W/kg

Battery capacity

Δ 830 Wh

M23,240 Wh
Ultra Bee4,070 Wh

Weight

M2—
Ultra Bee187 lb84.8 kg

Shorter is lighter.

Front travel

M2—
Ultra Bee239 mm

Rear travel

M2—
Ultra Bee244 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.

$3,800

$6,499

Motor & performance

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

14 kW19 hp

12.5 kW17 hp

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

—

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

—

147 W/kgCALC

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

56 Nm41 lb-ft

441 Nm325 lb-ft

Top speed

65 mph105 km/h

56 mph90 km/h

Battery & charging

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

3,240 Wh3.24 kWh

4,070 Wh4.07 kWhCALC

Pack voltage

72 V

74 V

Pack amp-hours

45 Ah

55 Ah

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

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

84 mi135 km

87 mi140 km

Charge time

—

4 h

Chassis

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

—

187 lb84.8 kg84.8 kg187 lb

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

—

909 mm35.8 in

Ground clearance

—

318 mm12.5 in

Wheelbase

—

1,379 mm54.3 in

Frame

—

Forged aluminum alloy

Suspension

Fork

—

37 mm inverted, adjustable compression & rebound

Front travel

—

239 mm9.4 in

Shock

—

TR Intersect monoshock, adjustable preload, compression & rebound

Rear travel

—

244 mm9.6 in

Wheels & brakes

Front wheel

19″

Rear wheel

16″

19″

Front tire

—

80/100-19

Rear tire

—

90/90-19

Front brake

4-piston hydraulic, 220 mm rotor

240 mm hydraulic disc

Rear brake

4-piston hydraulic, 220 mm rotor

240 mm hydraulic disc

Electronics

Ride modes

—

Sport · Daily · Eco · Reverse

Regen braking

—

Sur-Ron Energy Regenerative System (SERS)

Display

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Ownership

Warranty

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