Introducing the Yeah Racing Desert Lizard internal spring shock for crawlers, comes pre-assembled for easy upgrading your current rig! Comes with a full set of springs and machined pistons for you to setup your rig for all sorts of different conditions! Included are springs for you to build either a droop or a sprung setup, a sprung setup will create a rig which will generate a lot of flex and more suspension travel. For the droop setup, your rig will sit lower and because of a spring under the piston, will be less prone to rolling over but will generate less flex. Featuring a triple O-Ring sealing cartridge which will prevent shock oil leakage!