Features Designed to Maximize Axle Travel Smooth Axle Engagement & Disengagement Progressive Spring Rate Absorbs Energy Easy installation Lifetime Warranty DescriptionActive Off-Road Bumpstops help you take control of your suspension travel. They¡¯re designed with a progressive spring rate that can absorb the energy created when they ¡°bottom out.¡± In other words, they allow for a smoother ride when they ¡°bump¡± down on the axle.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. NotesATTN: State of California ConsumersWARNING: Cancer and Reproductive Harm (www.p65warnings.ca.gov)Manufacturer InfoReturn Information