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Reviews · 10 min

Altis Sigma: Everything You Need to Know

The Altis Sigma is a high-voltage electric dirt bike, not a Class 1–3 e-bike. Voro’s Early 2026 card is 25 kW, 97.2V 35Ah, 198 lb, and $5,299, governed to 20 mph. Canada prints 23 kW. A 2024 review printed 22 kW.

By SickEBike desk

The short answer

The Altis Sigma is an electric dirt bike, not a Class 1–3 e-bike. Voro’s Early 2026 card is $5,299, 25 kW peak, 601 Nm, a 97.2V 35Ah Samsung pack (3,402 watt-hours), and 198 pounds, governed to 20 mph. Altis Canada prints 23 kW. A 2024 review still prints 22 kW and 70-plus mph. Do not average them.

The Altis Sigma is an electric dirt bike, not a Class 1, 2, or 3 e-bike. Voro’s Early 2026 page shows $5,299, down from $6,099, and says the bike is mechanically the same as the 2026 graphics bike. The numbers on that page are 25 kilowatts peak, a hairpin motor at 8,300 rpm, 601 newton-meters (443 pound-feet), a 97.2-volt 35-amp-hour Samsung 50S pack, and 198 pounds. Ninety-seven point two times 35 is 3,402 watt-hours, which is the watt-hour Voro prints. The published top speed is 20 mph, with a footnote that the machine can do a great deal more unrestricted and is not street legal in most places. The indexed Altis Canada 2026 page prints 23 kilowatts, increased from 22. Rider Guide’s review, dated December 10, 2024, still prints a 22-kilowatt line and 70-plus mph. Do not average 22, 23, and 25. The row on this desk’s list links here.

A black and red electric motocross bike on a closed clay track
Voro’s MX tire line is 19-inch front and 16-inch rear. A 19/19 set is a different option on older cards. This is not a product photo.

The sheet, and the kilowatts that moved

Voro’s Early 2026 page, Howling Moto’s 2026 and later blocks, the indexed Altis Canada 2026 page, XMOTOR USA, and Rider Guide’s December 10, 2024 review. A reseller page that pasted a different bike’s sheet is in the prose.

What is printed
MotorVoro and Howling’s 2026 block: 25 kW peak. Howling writes that as 34 hp in the highlights and 33 hp in the spec block. 25 kW is about 33.5 hp. Canada: 23 kW, written as 31 hp in one block and 27–30 hp in another, increased from 22 kW. XMOTOR: 25 kW max, 8 kW rated, and 33.5 hp. The 2024 write-up: 22 kW in the spec table and 22.5 kW in the text.
TorqueVoro: 601 N·m, also written 443 ft-lb. Those match. Howling’s 2026 block: 601 N·m. The same dealer’s upgrade block: 688 N·m. XMOTOR: 607 N·m. Three prints. Do not average them.
BatteryVoro, Howling, Canada, and XMOTOR: 97.2V 35Ah, 3,402 Wh. XMOTOR’s spec line writes 3402 kWh, which is a unit error. It is not a 3,402-kilowatt-hour pack. The 2024 table: 98V 38Ah, written 3724kWh. Ninety-eight times 38 is 3,724 watt-hours. That is a different pack claim, and the unit is wrong there too.
SpeedVoro: 20 mph governed, and a great deal more unrestricted. XMOTOR: under 81 mph. The review: 70+ mph. The Canada lines this desk used do not print a top speed. They do print an estimated 55 miles.
RangeVoro: 50 miles, up to 100 in ideal conditions. Canada: about 55 miles (88.5 km). XMOTOR: under 55 to 70 miles. The review: 40 to 50-plus. No shared rider weight.
ChargeVoro: 3 hours. Howling and XMOTOR: 2 hours from 20% to 80%. Howling’s full line is 3 hours from 20% to 100%.
WeightVoro: 198 lb. Howling: 90 kg, written as about 198 lb. 90 kg is 198 lb. XMOTOR and the 2024 write-up: 185 lb. Those are not one claim.
ChassisVoro: MX tires 19 in front and 16 in rear, seat 35 in, 13 in clearance, air-spring forks, 4-piston discs, 260 mm front and 220 mm rear, five regen levels, a 520H chain, a 3.5 in TFT with NFC, a 450 phase-amp controller. Howling’s newer block: dual-spring forks, 220 mm front travel, seat 35 in, and a 33 in seat on the older block. The 2024 write-up also lists a 19/19 tire set.
PriceVoro: $5,299 from $6,099, and the page said back in stock. Howling: $5,299, sold out. XMOTOR: $5,599 from $6,099, sold out. Canada: $7,199 CAD. The 2024 write-up price: about $5,499. A Canadian dollar price is not a US dollar price.

Twenty-two, twenty-three, and twenty-five kilowatts are three model years or three regions, not a typo to smooth out. One hundred eighty-five pounds and one hundred ninety-eight pounds are the same kind of problem. Six hundred one, six hundred seven, and six hundred eighty-eight newton-meters do not become one torque. A 20 mph governor plus a 50-mile claim is a road figure. An 81 mph line and a 70-plus line are unrestricted claims. Do not publish 50 mph as the answer. Thirty-four horsepower and thirty-three horsepower on the same Howling listing are the same 25-kilowatt motor with two conversions. 25 kilowatts is about 33.5 horsepower. Canada’s 31 hp and 27–30 hp are not that conversion.

Twenty-five kilowatts is not a 750-watt bicycle. A 20 mph footnote and an NFC key do not create Class 2.

The wrong table

One reseller page titled Sigma then printed 32 kilowatts, a 216-pound curb weight, and 21-inch and 18-inch wheels, under a heading for the Talaria Komodo. The price line on that page was $4,400. That is not Voro’s $5,299, and it is not this 97.2-volt pack. If the voltage on the cart is 96, or the front wheel is a 21, you are not buying the bike in the paragraph above. The SS 4.0 is the 72-volt, 18-kilowatt E Ride at $4,999 on Voro. The Ultra Bee is the 24.5-kilowatt Sur-Ron. Cross-shop power only after the voltage matches the name.

It is not on the class chart. No bicycle pedals. Voro’s footnote says it is not street legal in most jurisdictions. Lights and a brake light do not change that sentence. Ride it where a dirt bike is allowed.

Who it is for

Buy it if you want the 97.2-volt bike Voro is actually selling, you have read 25 kilowatts rather than the 2024 write-up’s 22, and you know whether the crate is the 19/16 MX or a 19/19 set. Three thousand four hundred two watt-hours divided by 50 miles is about 68 watt-hours a mile. That is Voro’s 50-mile claim, not the 100-mile ideal line, and not a loop this desk rode.

Skip it if the only source in the ad is a 2024 review, a Canadian 23-kilowatt page you are treating as the US motor, or a table that says 32 kilowatts. Skip it if you need a plate. The stock line moved during this crawl: Voro said back in stock, and two other US shops said sold out.

Questions people ask

Is the Altis Sigma 22 kW or 25 kW?+

Voro’s Early 2026 card and Howling Moto’s 2026 block print a 25-kilowatt peak. The indexed Altis Canada page prints 23 kW, increased from 22. Rider Guide’s December 10, 2024 review prints 22 kW in the table and 22.5 kW in the text. Do not average them.

How fast is the Altis Sigma?+

Voro publishes 20 mph as the governed figure and says the bike can do a great deal more unrestricted. XMOTOR prints a top speed under 81 mph. Rider Guide’s 2024 review prints 70-plus mph. Do not publish 50 mph as the answer.

What battery is in the Sigma?+

Voro, Howling, Canada, and XMOTOR print 97.2 volts, 35 amp-hours, and 3,402 watt-hours. That multiplication agrees. Rider Guide’s older table prints 98V 38Ah and writes the energy as 3724kWh, which is a unit error. 98 times 38 is 3,724 watt-hours, a different pack claim.

How much is an Altis Sigma, and is it street legal?+

Voro showed $5,299 from $6,099 and said back in stock. Howling showed $5,299 sold out. XMOTOR showed $5,599 from $6,099 sold out. Canada showed $7,199 CAD. Voro’s footnote says it is not street legal in most places. A 20 mph governor is not Class 2.

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