The rear axle is a crucial component of a vehicle's drivetrain, connecting the rear wheels to the transmission. It supports the weight of the vehicle and allows the wheels to rotate, enabling movement. The rear axle can be either a single solid piece or a set of independent components, depending on the vehicle's design. In addition to supporting the vehicle's weight, the rear axle also plays a role in transferring power from the engine to the wheels. This transfer is essential for acceleration and maintaining speed. Proper maintenance of the rear axle is important for vehicle safety and performance.