Yamaha WR 155R Specifications

Engine cylinder capacity measured in cc.

Highest power the engine/motor can produce.

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

Method used to prevent engine overheating.

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

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

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

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

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

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

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

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

Different settings (e.g., Sport, Eco, Rain) that adjust performance and power delivery.

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).

Total energy the battery can store.

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

(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).

Distance from the ground to the seat.

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

Bike’s weight with fuel and fluids.

The main structure holding the bike together.

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

A component which support foots of the passenger.

Displays the current speed of the bike in km/h or mph.

Measures and records the total distance the bike has traveled since new.

Tracks specific trip distances separately from the odometer, useful for measuring short rides.

Indicates the current fuel level in the tank.

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

Shows engine RPM (revolutions per minute), helping with gear shifting and performance monitoring.

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