Stock body mounts deteriorate over time. S&B Body Mounts are made from premium silicone, so they won’t deteriorate. S&B engineered their Silicone Body Mounts from the ground up, perfecting every detail so you get a premium lifetime product. This kit also comes with corrosion-resistant coated steel cups and bolts. The bushings offer great vibration isolation and will not crack or break down like the OEM foam or rubber bushings. Silicone resists heat and ozone and will last the lifetime of your truck.