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Off-road onlyAltis Sigma Dirt Electric Bike
ALTIS

Sigma electric dirt bike

A 96V trail bike with a 25 kW hairpin motor: electric torque for experienced riders, without the gas-bike upkeep.

25kWPeak (34 hp)
688NmTorque
3.4kWhBattery
2h20–80% charge

Pay in full

Free shipping

Pay over time

Plans at checkout
Free shipping to the lower 48Off-road use onlyQuestions? Call or text us

Model highlights

Trail speed, electric.

Rider on the Altis Sigma

The Altis Sigma electric dirt bike runs a 25 kW peak hairpin motor (34 hp) that delivers 688 Nm of torque on the 39T sprocket. As a result, ALTIS rates it at 75+ mph with the 18-inch rear wheel, so it suits trails and open terrain alike.

In addition, the Sigma charges from 20% to 80% in about two hours on a household outlet, and its forged aluminum frame keeps the weight at 90 kg with the battery.

  • 3,402 Wh97.2V 35Ah Samsung 50S cells (Greenway pack)
  • 25 kWHairpin motor, automotive standard
  • 2 hours20–80% charge
  • 5 levelsRegenerative braking
  • 3.5″ TFTDisplay with NFC key
  • 13″Ground clearance
  • 520HChain, heavy-duty disc brakes

2027 Version

What’s new for 2027.

The 2027 Sigma keeps the 2026 battery and motor. However, it changes the parts you feel on the trail.

Part20262027
Front suspensionAir spring, 200 mmDual spring, 220 mm
HeadlightStandardBaja style
Torque601 Nm688 Nm
Rear axleStandard20 mm
Seat height33″35″
Ground clearance12″13″
Altis Sigma Dirt Electric BikeAltis Sigma Dirt Electric BikeAltis Sigma Dirt Electric Bike

Full specifications

The spec sheet.

ALTIS's figures for the Sigma; the 2027 changes are above.

Chassis

Frame
Forged aluminum alloy
Weight with battery
90 kg (198 lb)
Wheelbase
51 in (1280 mm)
Seat height
35 in
Ground clearance
13 in
Steering head angle
26°
Wheels
Spoked, aluminum rims

Suspension and brakes

Front travel
220 mm (2027)
Rear travel
85 mm shock, 200 mm wheel, linkage
Front disc
260 mm
Rear disc
220 mm
Chain
520H
Tires
Off-road

Motor and battery

Motor
98V hairpin
Peak power
25 kW (34 hp)
Torque
688 Nm (2027)
Battery
ALTIS PowerPack, 35 Ah, 3.402 kWh
Charging input
AC 110-120V, 12.5A
Charge 20–80%
120 min
Charge 20–100%
180 min
Cooling
Air cooled

The ALTIS line

Find the one that fits.

From a young rider’s first full-send weekend to race-ready power, lined up the way ALTIS lines them up.

ALTIS Delta
First full-send step

Delta

System
Peak
72V
8–13 kW
Top speed
Seat
60–63 mph
31.8"
From$2,899Monthly plans at checkout
ALTIS Sigma
Trail speed, electric

Sigma

System
Peak
96V
25 kW
Top speed
Seat
65+ mph
35"
From$5,299Monthly plans at checkout
ALTIS Omega
Race-ready, 250cc class

Omega

System
Peak
144V
55 kW
Top speed
Seat
75+ mph
36.2"
From$7,899Pre-order, ships Oct 8-15, 2026
ALTIS Vector
Forged 72V frame

Vector

System
Peak
72V
TBD
Top speed
Seat
—
—
$4,999Sold out

Questions

About the Sigma.

MX or Standard wheels?

The MX runs a 19-inch front and 16-inch rear wheel for motocross tracks. The Standard runs 19-inch front and 18-inch rear for trail and open terrain, and is the setup ALTIS rates at 75+ mph.

2026 or 2027 Version?

Both share the 25 kW motor and 3.4 kWh battery. The 2027 adds a dual-spring fork with 220 mm of travel, a Baja-style headlight, more torque (688 Nm), a 20 mm rear axle and a taller 35-inch seat.

How long does it take to charge?

About 2 hours from 20% to 80%, and 3 hours from 20% to 100%, on a standard household outlet.

Is the Sigma street legal?

No. It is an off-road motorcycle for private land and permitted trails.

Can I pay over time?

Yes. Monthly plans are offered at checkout.

How fast is the Altis Sigma?

ALTIS rates it at 75+ mph with the 18-inch rear wheel. Off-road use only.

What powers the Sigma?

A 25 kW hairpin motor with 688 Nm of torque, and a 3,402 Wh, 97.2V 35Ah Samsung battery.

How much is the Altis Sigma?

It's $5,299 at Speedway Riders, with free shipping.

The Sigma is an off-road motorcycle. Ride on private land or permitted trails, wear full protective gear, and check your local rules.

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