A CV joint, or constant velocity joint, is a crucial component in a vehicle's drivetrain. It allows power to be transferred from the transmission to the wheels while accommodating the up-and-down motion of the suspension and the steering movement. This flexibility is essential for smooth driving, especially when turning or going over bumps. There are two main types of CV joints: the ball-type and the tripod-type. The ball-type joint is commonly used in front-wheel-drive vehicles, while the tripod-type is often found in rear-wheel-drive systems. Both types help maintain a consistent speed and torque, ensuring efficient vehicle performance.