Aprilia RS 457 vs KTM RC 390

Highest power the engine/motor can produce.

The highest twisting force the engine generates, which affects acceleration and pulling power.

Compression ratio is how much the engine squeezes air-fuel before ignition. Higher ratios mean more power; lower ratios improve durability.

Method used to prevent engine overheating.

Pollution level compliance of the engine.

Design and working of the two-wheeler's engine.

Engine cylinder capacity measured in cc.

Bore is the diameter of a bike’s engine cylinder. A larger bore allows more fuel-air mix, increasing power and speed.

Highest power a bike/scooter can produce.

A feature that allows gear shifting without clutch.

The maximum distance an electric two-wheeler can travel on a full charge.

Stroke is the piston’s movement inside the engine cylinder. Longer strokes give more torque, shorter strokes give more speed and higher RPM.

Number of valves in each engine cylinder.

The system that starts the engine, usually via a key, button, or smart start.

The distance from the center of the front wheel to the center of the rear wheel, affecting stability, handling, and riding comfort.

(Anti-locking Braking System) Prevents wheel locking during hard braking, improving control and safety.

The overall design and shape of the bike (e.g., cruiser, sports, scooter).

The main structure holding the bike together.

A windshield that can be raised, lowered or tilted left/right to improve wind protection and rider comfort.

Bike’s weight without fuel and fluids.

Distance between the bike’s lowest part and the ground.

Bike’s weight with fuel and fluids.

Distance from the ground to the seat.

Distance from the ground to the seat.

Wireless connection for calls, music, and navigation.

A USB slot to charge devices like phones.

The method to start the bike (e.g., electric start, kick start, or both).

A button to instantly turn off the engine for safety and convenience.

A screen that shows important riding information like speed, fuel, and trip details.

Indicates the current fuel level in the tank.

The main dashboard displaying speed, fuel, engine stats, and warnings.

Displays the bike’s average fuel consumption over a period of riding.

Reminds when the next bike servicing or maintenance is needed.

A device that connects and disconnects the engine from the wheels for smooth gear shifts.

Projector headlights focus on the road, improving visibility, reducing glare for others, and offering a sharper, more efficient beam.

Small front lights that stay on with the headlight.

Total energy the battery can store.

Warranty period for the battery.

The design of the seat that affects comfort and seating position.

A feature that provides turn-by-turn directions on the two-wheeler display or connected device.