Altis Sigma vs Delta vs Omega: how the three ALTIS electric dirt bikes compare

The ALTIS ladder at a glance

ALTIS lines its electric dirt bikes up as steps, each for a more experienced rider.

• Altis Delta: a 72V pit bike frame on 17 inch front and 14 inch rear wheels, offered as the Delta, the Delta S and the Delta S Ghost Edition (the Delta S in white).
• Altis Sigma: a full size trail bike with a 97.2V battery, offered in a 2027 or 2026 version, black or red, and MX or Standard wheels.
• Altis Omega: a 144V race bike on 21/18 wheels, listed as a pre-order. Check the product page for the current ship window and versions.

ALTIS also makes the Vector, a 72V 50Ah bike, which is out of stock as we write. See the whole range on our ALTIS brand page.

Motor, power and torque

• Delta: a 13 kW (17.5 hp) segmented motor with 385 Nm at the rear wheel, and 62 mph.
• Delta S: 8 kW (10.7 hp), 273 Nm at the rear wheel, and 60 mph.
• Sigma: a 25 kW (34 hp) peak hairpin motor with 688 Nm in the 2027 version or 601 Nm in the 2026 version. ALTIS rates it at 75+ mph with the Standard 18 inch rear wheel.
• Omega: a 55 kW (74 hp) peak hairpin motor with 1,054 Nm (777 lb-ft) on a 144V system, and 75+ mph.

From the Delta up, each step roughly doubles the peak power. The Delta adds 5 kW over the Delta S in the same frame; the Sigma nearly doubles the Delta; the Omega more than doubles the Sigma. Every speed figure here is the maker’s, for off-road use only.

Battery and charging

ALTIS does not publish a range figure on our listings, so the battery size is the fairest guide. More watt hours means more riding at the same pace.

• Delta S: 72V 30Ah LG, 2,160 Wh, 20% to 80% in about 3 hours.
• Delta: 72V 35Ah Samsung, 2,520 Wh, 20% to 80% in about 2 hours.
• Sigma: 97.2V 35Ah Samsung 50S, 3,402 Wh, 20% to 80% in about 2 hours and 20% to 100% in about 3 hours, from a household outlet.
• Omega: a 5,040 Wh ALTIS semi-solid-state battery, 20% to 80% in about 2 hours.

Two hours for most of a charge is quick for packs this size, which helps if you ride twice in a day. Fast riding drains any pack sooner, as our electric dirt bike range guide explains, and the sibling guide on how to charge an electric dirt bike covers safe charging habits.

Wheels, seat height and chassis

The three bikes are very different sizes, so check fit before power.

• Delta: 17/14 inch wheels, a 31.8 in (810 mm) seat, 10.8 in of ground clearance and a 46.8 in wheelbase, on a forged aluminum frame.
• Sigma: MX wheels (19 inch front, 16 inch rear) for motocross tracks, or Standard wheels (19/18) for trail and open terrain. The 2027 version has a 35 in seat and 13 in of ground clearance; the 2026 version lists 33 in and 12 in. It weighs 198 lb with the battery, on a forged aluminum frame.
• Omega: 21 inch front and 18 inch rear wheels, a 36.2 in seat, 12.6 in of ground clearance and a 55.1 in wheelbase.

The Delta is the only ALTIS that suits shorter riders. The Sigma and Omega seats sit 35 to 36.2 inches up, tall even by full size standards. Our guide to electric dirt bike sizes shows how to compare a seat height with your inseam. ALTIS lists a weight only for the Sigma, so ask us if weight matters for loading or lifting.

Suspension and brakes

• Delta: adjustable spring-air off-road suspension on the Delta, spring-air on the Delta S. Heavy-duty disc brakes on the Delta, off-road discs on the Delta S.
• Sigma: the 2027 version has a dual spring fork with 220 mm of travel, and the 2026 an air spring fork with 200 mm. At the rear, an 85 mm shock gives 200 mm of wheel travel through a linkage. Heavy-duty discs measure 260 mm front and 220 mm rear.
• Omega: adjustable ALTIS factory suspension with 250 mm of front travel on the Standard. ALTIS lists a KYB fork and race shock for the Pro version.

Adjustable suspension pays off only when it is set for the rider’s weight. Our sibling guide to electric dirt bike suspension setup shows how to measure sag. Leave internal fork and shock work to a qualified technician.

Sigma 2026 or 2027, MX or Standard

The Sigma is the ALTIS most riders ask about, and it has the most choices. Both versions share the 25 kW motor and 3,402 Wh battery. The 2027 version adds the dual spring fork with 220 mm of travel, a Baja style headlight, more torque (688 Nm against 601 Nm), a 20 mm rear axle and a taller seat and more ground clearance.

Wheels change the job. The MX setup’s 16 inch rear wheel suits motocross tracks. The Standard 19/18 setup suits trails and open terrain, and it is the one ALTIS rates at 75+ mph, for off-road use only. The Sigma also has a 3.5 inch TFT display with an NFC key and five levels of regenerative braking.

How they line up against other brands

If you are cross-shopping, these bikes from other brands sit in similar classes and list full maker figures.

• Delta class: the E Ride Pro PRO-S has the same 8 kW peak as the Delta S, a 72V 30Ah battery, 127 lb and a 31.2 in seat, with 16 or 17 inch wheels.
• Sigma class: the E Ride Pro SR also makes 25 kW peak, on a 72V 50Ah (3,600 Wh) battery, at 183 lb with a 32.7 in seat.
• Omega class: the Talaria Komodo 2025 makes 32 kW peak and 556 lb-ft on a 96V 4,320 Wh battery, with air suspension at both ends and a 35.8 in seat.

Maker figures, checked September 2026. Real range and speed depend on rider weight, terrain, temperature and riding mode.

For the whole E Ride Pro family, read our sibling guide E Ride Pro lineup compared.

Which ALTIS suits you

• Developing riders who want room to grow: the Delta S, with 8 kW and speed levels starting at 22 mph.
• More power in the same pit bike size: the Delta, with 13 kW and a 15 mph first level.
• Experienced trail and track riders: the Sigma, in Standard wheels for trails or MX wheels for the track.
• Advanced and race riders: the Omega.

Every ALTIS is an off-road bike. Ride on private land with permission, at riding parks and tracks, and on trails open to off-road motorcycles, in full gear. See where to ride electric dirt bikes and electric dirt bike gear.

The Delta sits in the $2,000 to $3,000 band, the Sigma in the $5,000 to $6,000 band and the Omega above $7,000. Orders ship free to the lower 48 states, and each can be paid over time with monthly plans with Affirm, subject to approval. Browse more in our electric dirt bike collection.

Questions riders ask