Cylinder head studs are threaded fasteners that secure the cylinder head to the engine block in a motorcycle. They provide a robust and reliable connection, ensuring that the cylinder head remains tightly sealed against the engine block. Made from high-strength materials like steel or alloy, these studs withstand the high pressures and temperatures within the engine. Proper installation and torque of cylinder head studs are crucial for maintaining engine compression, preventing leaks, and ensuring optimal engine performance and longevity.