Dorman Control Arm Bumpers are made of high-quality rubber or polystyrene foam to absorb heavy impact. Replacement helps prevent damage to control arm, frame, shock mounts, and other suspension parts. It also provide a substantial cushion when your car bottoms out over bumps. All Dorman products are engineered in the United States and backed by 100 years of automotive aftermarket experience. Our solutions are thoroughly tested and inspected, and if you experience any difficulty installing or using our parts, we have a dedicated technical support team of ASE Blue Seal certified professionals ready to help. To learn more about our quality and innovation, visit DormanProducts.com.