The Active Off Road Bumpstops offer off road enthusiasts greater control over their vehicles' suspension travel. Using progressive rate springs means that instead of a hard stop at the end of axle travel the axle energy will be absorbed when bottoming out producing smooth, predictable and quiet axle engagement and disengagement. Unlike the OEM bumpstops, Timbren uses superior natural rubber compound ensuring the Active Off Road Bumpstops will continue to operate even after a lifetime of off road abuse. Similar to our Timbren SES line, Active Off Road Bumpstops carry a lifetime warranty and a satisfaction guarantee. Product Features:Maximize Axle TravelSmooth Axle Engagement And DisengagementEnhance Suspension PerformanceProgressive Spring RateAbsorbs Energy And Cushions Road ShocksStronger Than OEM BumpstopsEasy InstallationLimited Lifetime Warranty