A connecting rod is a critical engine component that links the piston to the crankshaft, translating the linear up-and-down motion of the piston into the rotational motion required to turn the driveshaft. Typically forged or cast from high-strength steel, aluminum alloy, or titanium, it features a small end attached to the piston pin and a larger, split end secured around the crankshaft journal. Because it operates under severe thermal and mechanical stress, the connecting rod must balance extreme tensile and compressive strength with lightweight construction to maximize performance and withstand thousands of violent RPMs without failing.