Head to head

Sigma StandardVSXE Pro S

Comparing 2 of 3

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Altis · 2027

Sigma Standard

21″ front wheel swap(est.)

Arctic Leopard · 2026

XE Pro S

21″ front wheel swap(est.)

CAdd a bike

Summary

Claimed figures · blanks excluded

Most peak power: Sigma Standard25 kW
Biggest battery: XE Pro S3,960 Wh
Most front travel: Sigma Standard220 mm
Lowest price (USD): XE Pro S$5,100

Measured against each other

Peak power

Δ 5 kW

Sigma Standard25 kW
XE Pro S20 kW

Power-to-weight

Sigma Standard—
XE Pro S277 W/kg

Battery capacity

Δ 558 Wh

Sigma Standard3,402 Wh
XE Pro S3,960 Wh

Weight

Sigma Standard—
XE Pro S159 lb72.1 kg

Shorter is lighter.

Front travel

Δ 20 mm

Sigma Standard220 mm
XE Pro S200 mm

Rear travel

Sigma Standard—
XE Pro S200 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.

$5,299

$5,100

Motor & performance

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

25 kW34 hp

20 kW27 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.

—

277 W/kgCALC

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

615 Nm454 lb-ft

600 Nm443 lb-ft

Top speed

80 mph129 km/h

62 mph100 km/h

Battery & charging

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

3,402 Wh3.4 kWh

3,960 Wh3.96 kWhCALC

Pack voltage

97.2 V

72 V

Pack amp-hours

35 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.

—

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

—

50 mi80 km

Charge time

2 h

—

Chassis

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

—

159 lb72.1 kg72.1 kg159 lb

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

889 mm35 in

838 mm33 in

Ground clearance

330 mm13 in

290 mm11.4 in

Wheelbase

1,300 mm51.2 in

Frame

—

Suspension

Fork

Adjustable dual-spring off-road suspension

KKE 37 mm Fork, 200 mm travel, compression, rebound & preload adjustab

Front travel

220 mm8.7 in

200 mm7.9 in

Shock

—

KKE Rear Shock, 200 mm travel, compression, rebound & preload adjustab

Rear travel

—

200 mm7.9 in

Wheels & brakes

Front wheel

19″

19″CALC

Rear wheel

18″

16″CALC

Front tire

70/100-19

Rear tire

90/100-18

90/100-16

Front brake

—

Rear brake

—

Electronics

Ride modes

Eco · Normal · Sport · Race

—

Regen braking

5 selectable levels

—

Display

TFT with NFC and key ignition

TFT, NFC keyless

Ownership

Warranty

—

1 Year Limited Warranty

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