The Hero Passion Pro i3S Drum 100 Million Edition is a special variant of the Passion Pro lineup, commemorating Hero MotoCorp's achievement of producing 100 million motorcycles. i3S Technology: Like other variants of the Passion Pro lineup, the Passion Pro i3S Drum 100 Million Edition is equipped with Hero's i3S technology. The "i3S" stands for "Idle Stop Start System," which automatically shuts off the engine when the motorcycle is stationary and in neutral for a certain duration, such as at traffic signals, to conserve fuel and reduce emissions. Engine: The Passion Pro i3S Drum 100 Million Edition is powered by a single-cylinder, four-stroke engine with a displacement of approximately 110cc to 113cc. This engine delivers reliable performance and excellent fuel efficiency, making it suitable for daily commuting and short rides. Power and Performance: The engine typically generates around 8 to 9 horsepower and 9 to 10 Nm of torque, providing adequate power for urban commuting and highway cruising. It offers smooth acceleration and performance across various riding conditions.Transmission: It comes equipped with a 4-speed constant mesh gearbox or a 5-speed gearbox, ensuring smooth gear shifts and optimal performance in various riding situations.