Yes, countersteering is applicable to motorcycles of all engine sizes, including 600cc motorcycles. Countersteering is a fundamental technique used to initiate and control turns on a motorcycle.
Countersteering involves applying a slight, momentary steering input in the opposite direction of the intended turn. For example, if you want to make a right turn, you briefly and gently push on the right handlebar, which causes the motorcycle to lean to the left. This initial leaning motion initiates the turn, and once the motorcycle is leaning, you steer in the direction you want to go by continuing to apply pressure on the handlebar corresponding to the intended turn.
The concept behind countersteering is based on the physics of how motorcycles balance and steer. When you push on the handlebar in the opposite direction of the desired turn, it causes the bike to lean due to the gyroscopic effect of the spinning wheels and the bike's geometry. Once the bike is leaning, the front tire's contact patch shifts to the side, creating a force that steers the motorcycle into the turn.
Countersteering is a natural and instinctive technique that most riders use without consciously thinking about it. It is a crucial skill for controlling a motorcycle's direction and stability during turns, regardless of the engine size of the bike.