The 2025 Altis Sigma has been generating a lot of buzz in the small eMoto scene. With its eye-catching body work and impressive powertrain, it’s gotten a lot of attention for its looks and power. But is all this attention warranted, or is it just marketing? We took the bike out for a full day of testing from desert off road to the pit bike track, bringing in professional riders Jet Underwood and Rob Imondi to give some opinion.
Specifications of the Altis Sigma
Before diving into the riding impressions, here are the key specs of the 2025 Altis Sigma straight from Altis Powersports:
Battery & Motor:
- Battery: 97.2V 35Ah Samsung 50S lithium-ion battery (3.4 kWh capacity)
- Motor: Peak power of 22 kW with a gear-driven motor that offers smooth, controlled power delivery.
Performance:
- Top Speed: Over 70 mph (113 km/h)
- Torque: 533 Nm with the 39T sprocket on the standard model; 601 Nm with the 44T sprocket on the MX version.
Dimensions & Weight:
- Weight: Approximately 185 lbs (84 kg)
- Wheelbase: 1285 mm
- Ground Clearance: 300 mm
- Seat Height: 840 mm
Wheels & Tires:
- Standard Model: 19″ front and rear wheels
- MX Model: 19″ front wheel with a 16″ rear wheel
Suspension & Brakes:
- Suspension: Adjustable air-spring system with 200 mm front travel and 85 mm rear travel. (Altis claims their MX has stiffer suspension than the Standard)
- Brakes: Front 260 mm and rear 220 mm disc brakes with 5 levels of regenerative braking.
Additional Features:
- Display: 3.5″ TFT display with NFC functionality.
- Lighting: Front headlight, rear taillight, and functional brake light.
First Ride Impressions
Power Delivery
One of the standout features of the Altis Sigma is its power delivery. We all praised the smoothness and abundance of power, especially when the bike reached top speed. The bike builds power smoothly and controllable, and it feels endless when paired with the 44T sprocket. The motor is a gear-driven design (opposed to the jackshaft belt bikes we typically see). The power is controlled and doesn’t come on too aggressively, which feels like it would be best suited for a wider group of riders. .
However, as smooth as the power is, all riders agreed that the throttle ramp was relatively mellow, meaning that it takes a little while to truly feel the full power. While this is not necessarily a bad thing, riders needing that quick snap for off road riding or stunt riding might prefer a bigger sprocket or different power curve. The top-end power was certainly there, but the bike’s smooth delivery made it more suited for high speed cruising than aggressive riding.
Suspension and Handling
Suspension is where the Altis Sigma received some criticism. Jet described the front suspension as “way too soft,” causing the front end to dive when cornering. This softness also made jumping difficult, as the bike’s suspension did not provide enough support on landings. Rob felt similarly, mentioning that the bike’s suspension made it difficult to handle jumps, with the bike bottoming out on landings and feeling uncomfortable on rougher terrain like whoops.
The bike’s weight became more noticeable when trying to make tight turns or navigate technical sections. While the weight did contribute to stability, it made the bike feel “awkward” in certain riding situations. The low center of gravity and hefty build didn’t provide the agility that many riders are accustomed to on other electric dirt bikes in this category.
We also pointed out that the bike’s front end was a bit heavy, which made jumping difficult and impacted the overall balance of the bike. It’s not uncommon to have a bike unbalanced in this category, and the Altis Sigma is another culprit. For more aggressive riders who are used to a nimble, light and flickable bike and looking for a nimble machine, we felt the Altis Sigma wasn’t a standout in comparison to other bikes in its class.
Build Quality and Durability
Despite the handling concerns, we noted that the Altis Sigma feels solid. The frame appears durable, and the bike has a premium look to it. However, we pointed out some clanking noises coming from the rear of the bike during all of our rides, which we couldn’t pinpoint, but they were noticeable. It’s worth noting that these noises didn’t seem to hinder the bike’s performance, but it did add to the feeling that the bike might need some refinement in that section.
Final Thoughts of the Altis Sigma
After testing the Altis Sigma in various conditions—from desert riding to pit bike tracks—it’s clear that this bike offers a solid mix of power and comfort but has some drawbacks in terms of handling and suspension. We’ll be testing this bike more in the future, figuring out true battery range and long-term durability. But for a first impression, here are the key takeaways:
- Power: The Altis Sigma delivers smooth and abundant power, especially at top speed. It’s controlled, easy to manage, and perfect for mixed on/off road riding or dual purpose.
- Handling: The bike’s weight and soft suspension make it less agile off road, especially in tight turns or when jumping. It’s stable but not as nimble, which may be a dealbreaker for riders who want a more responsive bike.
- Suspension: The suspension on the standard edition is pretty soft and doesn’t provide enough support for aggressive off-road riding, leading to bottoming out on jumps and rough terrain.
- Overall Impressions: The Altis Sigma is an impressive bike in terms of power and build quality, and we see it being a great purchase for street focused riders but it may not be the best choice for serious off-road riders.
The Altis Sigma seems to be a strong contender for casual riders and those looking for a good-looking and powerful bike for urban assault or light off-road use. However, for experienced dirt bike riders who demand agility, tight handling, and better suspension performance, this bike may not be the ideal choice in stock form.
