Altis Sigma | 98 Volt | Long Range Electric Dirt Bike

Altis Sigma: The Best Electric Dirt Bike in its Class 

Altis Sigma, the all-new 98-Volt, 35-amp hour long-range battery, electric dirt bike is a groundbreaking bike that has already shaken up the entire e-moto industry. The Altis Sigma is available at REV Rides in two powerful models, the Altis Sigma and Sigma MX, with the MX having a 16″ rear wheel. and the Sigma with a 19″ rear wheel.  Both models boast a 19″ front wheel. This cutting-edge bike boasts a robust 27 HP (20kW) peak Hairpin motor, delivering an impressive 443 lb-ft (601 Nm) of torque for exhilarating off-road adventures. With a lightweight aluminum alloy frame, advanced adjustable air-spring suspension, and a long-lasting Samsung 50S battery pack, the ALTIS SIGMA combines performance and versatility like never before. Experience the future of electric riding with enhanced features such as a 3.5″ TFT display that enables never-before seen tuning, five levels of regenerative braking, and heavy-duty CST off-road tires. The Altis Sigma has a Top Speed of 20 Mph From the factory – see below for unlocked top speed. 

Pre-Order Now! Estimated Shipping Late January – Early February. 

Quantities are extremely limited and selling fast. Order soon if you want to be one of the first to own the Altis Sigma. Future shipping updates will be posted here. 

ALTIS SIGMA MX vs. ALTIS SIGMA

The Altis Sigma MX has a 16″ rear wheel (often preferred in off-road settings), where as the Altis Sigma has a 19″ rear wheel. Otherwise, the two bikes are identical.
ALTIS SIGMA & ALTIS SIGMA MX SPECIFICATIONS

Design & Performance Upgrades:

Altis decided to make some upgrades to the final production bikes. Here’s a list of some of those changes!

1) 22kw Motor output, increased from 20kw
2) Upgraded front fork springs
3) 3-inch Handlebar riser bar
4) New chain guard included
5) New rotor bash guard included

ALTIS SIGMA PRODUCT HIGHLIGHTS

• Battery: 97.2V 35Ah (3402Wh) Samsung 50S battery Cells (Greenway Battery Pack)
• Motor: 22 kW peak Hairpin Motor (Automotive standard)
  Torque: 601 Nm (44T Sprocket)
• Wheels: Laced wheels: Fr 19″ / Rr 16″ (Straight-pull)
• Suspension: Adjustable off-road air-spring suspension
• Display: 3.5″ TFT display with NFC feature
• Tuning: Adjust throttle curves, aggressiveness, and more through the display
• Regenerative Braking: 5 levels of regenerative braking
• Lights: Headlight & Taillight (w/brake light) switch, has high beam and low beam
• Brakes: Heavy duty 4 piston DOT disc brakes
• Top Speed: 20 Mph (From the factory. See below for unlocked top speed)
• Tires:
  • SIGMA MX: CST off-road tires (specific size)
  • SIGMA: CST off-road tires (potentially different tread pattern)

ALTIS SIGMA CHASSIS SPECIFICATIONS

• Weight (with battery): 185 Lb (84 kg)
• Wheelbase: 51 Inches (1285 mm)
• Front Brake Disc Diameter: 260 mm
• Rear Brake Disc Diameter: 220 mm
• Chain: 428H
• Frame Design: Aluminum alloy forging
• Ground Clearance: 12 Inches (300 mm)
• Seat Height: 33 Inches (840 mm)
• Steering Head Angle: 26°
• Suspension Travel (Front): 8 Inches (200 mm)
• Suspension Travel (Rear): 3.3 Inches (85 mm) with linkage
• Wheels: Spoked wheels with aluminum rims
• Max Load: 300 lbs

ALTIS SIGMA POWERTRAIN SPECIFICATIONS

• Rated Output: 8 kW
• Controller: 450-Phase Amp Controller 
• Torque: 75 Nm
• Battery: Lithium-lon ALTIS PowerPack
• Battery Capacity: 35 Ah
• Charging Input: AC110V/220V 12.5A
• Charging Time 100%: 180 min.
• Charging Time 80%: 120 min.
• Cooling: Air cooled
• Energy Content: 3.402 kWh
• Electric Motor: 98V – Hairpin motor
• Max Power: 20+ kW
• Gearbox: 600 mile first service, 5000mile/5 year 2nd service

Which Sigma is Right for You?

• Sigma (19/19 Wheels) – Ideal for riders who want versatility. Whether you’re hitting trails, gravel roads, or occasional pavement, this setup provides a balanced mix of stability, speed, and off-road capability. If you’re looking for higher top speeds while maintaining off-road performance, the standard Sigma is the way to go.

• Sigma MX (19/16 Wheels) – Built for the off-road purist. If you spend most of your time on motocross tracks, single-track trails, or technical terrain, the smaller rear wheel enhances agility, acceleration, and handling. The focus here is on control and responsiveness rather than outright top speed, making it perfect for aggressive off-road riding.

ALTIS SIGMA LINKS / TECH INFORMATION

• OVER THE AIR APP SOFTWARE UPDATE INFORMATION
• ALTIS USER MANUAL
• HOW TO GET FULL POWER FROM MY ALTIS

Altis Sigma Unveiling Video by REV Rides

Altis Sigma Assembly Video

Please note that this product is not fully waterproof (only water resistant) and some assembly is required. It can be assembled at home but we advise taking to a professional.