Transmission gears are the backbone of any vehicle's transmission system, facilitating the transfer of power from the engine to the wheels. These gears, typically arranged in a gearbox, allow for seamless transitions between different speeds, enabling the vehicle to operate efficiently across various driving conditions.

The transmission gear system comprises multiple gears with different sizes and teeth configurations. As the driver shifts gears, the transmission system adjusts the ratio between the engine's rotational speed and the wheel's rotational speed, optimizing performance for acceleration, cruising, or fuel efficiency.