Finally a set up for your XM that will let you unleash the beast under the hood! When we combined it with our XM Front Track Shock, it took our E-Tec from being the most feared vehicle in the stable to ride to one of the funnest we have due to the exceptional running quality of the engine and the pin point accuracy of the suspension. Standard features: 100% billet parts, 5/8 nitride shafts, one piece triple rate springs, spherical bearings, (RAP) rapid adjust preload and synthetic fluid to name a few!