Locally known in Pakistan as a "garaari/garrari set," the chain and sprockets are crucial on a motorbike because they transfer power from the engine to the rear wheel, enabling the motorcycle to move. They also influence the bike's acceleration, top speed, and overall performance. Proper maintenance and timely replacement of these components are essential for safe and efficient riding. 

For a CG125 model, the sprocket is unique and should always be fitted genuine.