Harley Davidson X440 T vs Yamaha R15S

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.

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.

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 fuel efficiency (km/l) tested under ideal conditions by the Automotive Research Association of India (ARAI).

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.

A tyre with strong sidewalls and better grip, durability, and heat resistance.

(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).

How power is sent to the wheels (e.g., chain, belt, shaft).

The main structure holding the bike together.

Extra space for carrying items.

Bike’s weight with fuel and fluids.

A support accessory for the passenger’s back.

A component which support foots of the passenger.

Distance from the ground to the seat.

A USB slot to charge devices like phones.

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

A switch to flash the high beam, signaling other vehicles while overtaking.

A system that prevents wheel slip by adjusting power during acceleration on slippery surfaces.

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

Indicates the current fuel level in the tank.

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

Alerts when engine oil is low, preventing damage and ensuring smooth performance.

Displays current fuel consumption per kilometer.

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

The entire system that transfers engine power to the wheels (includes clutch and gearbox).

Flashing lights on a two-wheeler that indicate the rider's turning or lane-changing direction.

A warning light when fuel is low.

Total energy the battery can store.

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

A companion app to monitor bike stats, location, and settings.

Notifies you of incoming calls or messages on the bike’s screen.

A feature in which rider can set a steady speed without using the throttle.