Constructed of stainless steel and anodized aluminum, HKS’ Pillowball upper mounts (the point where the strut or shock assembly meets the vehicle’s body) enhance suspension performance by improving steering response and increasing rigidity and feedback. Most factory suspension mounts, the point where the strut or shock assembly meets the vehicle’s body, are constructed from rubber or plastic for maximum ride comfort. These mounts can flex and bend, hindering suspension performance and ultimately traction, steering response and control. HKS’ Pillowball upper mounts, constructed of stainless steel and anodized aluminum, allow your suspension to work at its fullest capacity by improving steering response and crispness. Some applications incorporate adjustable camber plates to offer additional control and tunability.