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2026 Altis Sigma High Performance Electric Dirt Bike

2026 Altis Sigma High Performance Electric Dirt Bike

$5,299.00
$5,599.00 $5,299.00
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2026 Altis Sigma High Performance Electric Dirt Bike

Built for riders who want real power, range, and a platform that keeps pushing forward

The 2026 Altis Sigma is where Altis took everything that worked on the Sigma platform and refined it into something sharper, stronger, and more capable across the board. This is not just a refresh, it is a more dialed version of what riders have already been pushing hard in the real world.

At the core is a 98V system paired with a 35Ah Samsung 21700 battery and a 25kW peak hairpin motor. That combination gives you strong acceleration, high sustained power, and the ability to carry speed in a way most bikes in this class still struggle with. With a 450 phase-amp controller and updated throttle tuning, power delivery feels more controlled down low and more aggressive when you want it.

Altis also stepped up the chassis and rider interface. You are getting a new bar size upgrade to 1 1/8”, improved front suspension with a 220mm dual spring fork, reinforced components throughout, and a new headlight setup. It is still the same lightweight forged aluminum frame concept, just tightened up where it matters for durability and ride feel.

From our perspective at REV Rides, what really makes this bike stand out is how balanced it is. It has one of the best throttle Curves out there and For a long ride Aspect the seat has one of the best if not most comfortable seat and riders box. It is not just peak numbers, it is how usable that power is across trail riding, faster open sections, and everyday riding. The Sigma platform has always been strong, and this 2026 version just feels more complete.

Why the 2026 Sigma stands out

  • 25kW peak hairpin motor gives strong top end while still staying controllable down low
  • 98V Samsung battery system delivers consistent power and solid range for longer rides
  • 450A controller keeps power delivery smooth but aggressive when needed
  • 220mm dual spring fork improves front-end stability and control over rough terrain
  • Updated cockpit and bar size gives a more modern, planted riding position
  • Full size moto brakes with 260mm front and 220mm rear rotors for real stopping power

Technical Specifications

  • Motor Power: 25kW Peak (34 HP)
  • Torque: 601 Nm (44T sprocket)
  • Top Speed: 80+ mph on 19/19 | 65+ mph on 19/16
  • Battery: 98V 35Ah Samsung 21700
  • Battery Capacity: 3.4 kWh
  • Controller: 450 Phase-Amp
  • Weight: 198 lbs
  • Seat Height: 35"
  • Wheelbase: 51"
  • Ground Clearance: 13"
  • Front Suspension: 220mm Dual Spring Fork
  • Rear Suspension: 85mm Linkage
  • Brakes: 260mm Front / 220mm Rear, 4-Piston Hydraulic
  • Display: 3.5" TFT with NFC
  • Regen Braking: 5 Adjustable Levels
  • Charging Time: 80% in 2 hours, 100% in 3 hours
  • Cooling: Air-cooled
  • Wheels: 19" Front / 19" Rear
    (19" Front / 16" Rear MX version coming Summer 2026)
  • Color: Black (Red coming Summer of 2026)

2026 Upgrades

  • Upgraded BMS for improved efficiency and range
  • Higher motor RPM for better top end performance
  • Increased torque output for stronger acceleration
  • Refined throttle tuning for smoother control
  • Dual spring front suspension upgrade
  • Dust seals added to rear linkage
  • Reinforced front hubs for added durability
  • 1 1/8" handlebar upgrade
  • New headlight design
  • New 520h chain

2025 vs 2026 Altis Sigma Comparison

Powertrain & Performance

Category 2025 Altis Sigma (Standard) 2026 Altis Sigma 
System Voltage 97.2V (98V class) 98V
Battery 35Ah Samsung 50S (~3.4 kWh) 35Ah Samsung 21700 (~3.4 kWh, updated BMS)
Motor Hairpin motor Hairpin motor (higher RPM)
Peak Power 20–22 kW (~27 HP) 25 kW (~34 HP)
Torque 533 Nm (39T) / 601 Nm (MX) ~601 Nm+ (increased output)
Top Speed ~70 mph / ~62+ mph (MX) 80+ mph (19/19) / ~65+ mph (MX)
Controller Altis programmable 450A (refined tuning)
Throttle Standard mapping Refined, smoother and more aggressive
Range ~50 miles (terrain dependent) Improved efficiency (updated BMS + tuning)
Regen Braking 5 Levels 5 Levels

Chassis & Suspension

Category 2025 Altis Sigma 2026 Altis Sigma
Frame Steel & aluminum hybrid Refined forged aluminum
Weight ~198 lbs ~198 lbs
Wheelbase 1285 mm (~50.6”) ~51”
Seat Height ~33” ~35”
Ground Clearance ~11.8” ~13”
Front Suspension 200mm air spring fork 220mm dual spring fork
Rear Suspension Linkage, ~85mm travel Linkage, ~85mm (dust seals added)
Brakes 260mm front / 220mm rear Same (4-piston hydraulic)

Wheels & Hardware

Category 2025 Altis Sigma 2026 Altis Sigma
Wheel Options 19/19 or 19/16 (MX) Same (MX variant continues)
Chain 428H 520H
Front Hubs Standard Reinforced
Rear Axle 18mm Upgraded (stronger setup)

Cockpit & Electronics

Category 2025 Altis Sigma 2026 Altis Sigma
Handlebars 7/8” 1 1/8” (28.6mm)
Display 3.5” TFT with NFC Same
Headlight LED New updated design
Charging Time ~3–4 hours ~3-4 hours
Cooling Air-cooled Air-cooled


Key Upgrades in 2026

  • 25kW peak power (up from ~22kW)
  • Higher motor RPM for better top-end speed
  • Increased torque and stronger acceleration
  • Refined throttle tuning for smoother control
  • Upgraded BMS for improved efficiency and range
  • 220mm dual spring fork for better front-end stability
  • Reinforced hubs and improved durability
  • 1 1/8” handlebar upgrade
  • New headlight design
  • New 520 chain Up from 428

 

Wheel Options

  • Sigma: 19" front / 19" rear, better for stability and higher speed riding
  • Sigma MX: 19" front / 16" rear, quicker handling and more torque-focused feel

 

Who this bike is for

  • Riders coming from Sur-Ron or Talaria platforms looking for more power and range
  • Trail and enduro riders who want a lightweight bike that can still carry speed
  • Anyone building a high performance e-moto setup without jumping into full size gas bikes

Important Notes

  • Water resistant, not waterproof. Avoid direct exposure to water on electrical components
  • Ships via freight, some assembly required

 

Altis Sigma Assembly Video


 

Resources

Shipping & Assembly

  • Ships via freight (some assembly required)
  • Local pickup available by appointment
  • Always avoid liquid exposure to battery, controller, or wiring

ALTIS SIGMA LINKS / TECH INFORMATION

2025 Altis Sigma Unveiling Video by REV Rides


Please note: The Altis Sigma is not waterproof (only water resistant). Always avoid liquid exposure to the battery, wires/connectors, controller, cockpit controls and other electronic components.

Altis Sigma orders ship via freight unless you arrange for local pick-up. Some assembly is required. 


Disclaimer:
This product was designed and intended for off-road and closed-course use only. Prohibited for use on public streets, sidewalks, bike paths, or other municipal property, unless otherwise posted. Refer to local city, county, state, and federal regulations before riding. Purchasers must be 18 years or older or have parents/guardian permission. Always wear approved safety gear, and ride responsibly.

*Top Speed Information

Off-road Top Speed: sigma 19/19 70+ MPH, Sigma MX 57+mph

NOTICE: Some vehicles include a “City Mode” that limits top speed to 20 mph, making them compliant with many city and state regulations for use on public roads, bike paths, sidewalks, and parks. Other vehicles may feature an “Off-Road” or “Race” mode, which increases performance and top speed (more than 20mph) but may render the vehicle illegal for use in the city or on public roadways. Vehicles without a “City Mode” and exceed a top speed of 20mph are not for use on public roads, bike paths, sidewalks or in parks, and are intended for off-road, privately owned land or track use only. Always check and follow your local laws and regulations before riding. 

Click here to learn how to enable off-road/mode. 

Click here to learn more about City Mode and Off-Road Mode  

Warranty



At REV Rides we understand the importance of micromobility. Many of our customers rely on their electric vehicles for transportation to work, school or just daily recreation. Because of this we want to ensure that our customers feel secure with their purchase from us.

Click here to learn more about our warranty

 

Altis Powersports Warranty Coverage for 

bikes purchased after 09/03/2025:

Altis Powersports Warranty Coverage

  1. 30-Day Warranty – Workmanship & Operational Issues
    Covers defects in workmanship and operational issues effective from the date of delivery of the unit.
  2. 30-Day Warranty – Parts & OEM Accessories
    Covers all standard parts and OEM accessories included with the unit.
  3. 365-Day Warranty – Power System Components
    Covers the following components for 1 year (365 days) from delivery. These parts must be returned to Altis Powersports for evaluation:
    • Battery
    • Controller
    • Motor
  1. 90-Day Warranty – Display
    • Covers the display for 3 months (90 days) from delivery.
    • The display must be returned to Altis Powersports for evaluation.
  1. 30-Day Warranty – All Other Parts
    • Any other covered components not listed above fall under a 30-day warranty.

Warranty Exclusions

This Limited Warranty does not cover the following:

  • Normal wear items: brake components, seals, bearings, chains, suspension parts, tires, rims, grips, and handlebars.
  • Misuse, abuse, or accidents: including collisions, neglect, or improper operation.
  • Alterations or unauthorized modifications: including tampering with factory wiring, installation of non-genuine parts, or racing/competition use.
  • Improper handling or storage: including incorrect charging, discharging, or storage of the unit.

Warranty Claim Process

  • Submit warranty claim to your original authorized dealer.
  • For approved claims, defective components must be returned to Altis Powersports for technical evaluation before a replacement is issued.
  • Proof of purchase (receipt from Altis Powersports Inc. or an authorized dealer) is required to process all warranty claims.

Warranty Timeframe Exception

  • The only exception to the stated warranty timeframes is if the required replacement part is temporarily out of stock.
  • As long as the claim was submitted within the valid warranty timeframe, Altis Powersports will honor the claim and provide a replacement once the part becomes available.

Additional Terms

  • This warranty is non-transferable and valid only for the original purchaser.
  • Altis Powersports Inc. reserves the right to determine, after inspection, whether a component is covered under warranty.

 

 

Altis Powersports Warranty Coverage for 

bikes purchased before 09/03/2025:

  1. 30-Day Warranty on Workmanship Defects and Operational Issues Altis Powersports Inc. provides a 30-day warranty, effective from the date of delivery, covering any defects in workmanship and operational issues with the unit.
  2. 30-Day Warranty on Parts and OEM Accessories Altis Powersports Inc. offers a 30-day warranty, effective from the date of delivery, for all parts and OEM accessories included with the unit.
  3. 365-Day Warranty for Power System Components Altis Powersports Inc. offers a 365-day warranty, effective from the date of delivery, on key power system components, including the motor, controller, and battery.

Warranty Exclusions

The Limited Warranty does not cover:

  • Normal Wear Components: This includes, but is not limited to, brake components, seals, bearings, chains, suspension components, tires, rims, grips, and handlebars.
  • Misuse or Abuse of the Product: This includes any damage caused by accidents, collisions, or general neglect.
  • Alterations and Unauthorized Modifications: Any modifications to the factory wiring, installation of non-genuine Altis parts, or use of the product in racing or competition will void this Limited Warranty.
  • Improper Handling and Storage: Misuse in charging, discharging, or improperly storing the unit will also void this Limited Warranty.

Additional Terms:

  • This Limited Warranty is non-transferable and is only valid for the original purchaser.
  • Proof of purchase, such as the original receipt from Altis Powersports Inc. or an authorized Altis Powersports Inc. dealer, is required to claim the warranty.
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