Arms and joints facilitate controlled movement within a vehicle’s suspension, steering, and drivetrain systems. These components connect rotating or pivoting parts, allowing for articulation while transmitting torque and force. Ball joints, tie rod ends, control arms, and sway bar links are common examples, typically constructed from forged steel or aluminum alloys for strength and durability. Polymeric bushings are integrated to dampen vibration and reduce noise, while sealed designs prevent contaminant ingress. Precise manufacturing tolerances are critical for maintaining alignment and ensuring proper vehicle handling and safety.