Altis Sigma 2025

E-Bike Classes 1, 2, 3, and Motorcycles

The regulatory classification that governs how and when the motor provides assistance.

Motor Placement

Where the electric motor is integrated into the bike frame or wheels.

Nominal vs. Peak Watts

The continuous running power of the motor compared to its maximum short-burst output.

Nominal vs. Peak Watts

The continuous running power of the motor compared to its maximum short-burst output.

Torque (Nm)

The rotational force (pulling power) of the motor measured in Newton-meters.

Sensor Type (Torque vs. Cadence)

The technology used to detect when the rider is pedaling and how much assistance to deliver.

Battery Capacity (Wh)

The size of the battery's electrical capacity, measured in Watt-hours.

Max Payload Capacity

The maximum total weight (rider + cargo + accessories) the e-bike can carry safely.

Suspension (Rigid, Front, Full)

Shock absorption systems that cushion the rider from rough surfaces.

Brake Type (Hydraulic vs. Mechanical)

The mechanism used to clamp the brake pads onto the brake discs.

Drivetrain (Chain vs. Carbon Belt)

The system transferring your physical pedal power to the rear wheel.

UL Certification (UL 2849 / 2271)

Electrical and battery safety certifications awarded by Underwriters Laboratories.