H&R 22mm Front Non Adjustable Sway Bar Kit | Subaru WRX STI (04-07) (70457)H&R Sway Bars are crafted from a special 50CrV4 steel alloy the highest tensile strength available and the industry's strongest and most durable. The true consistency of this special alloy guarantees smooth transitions in sway bar function. A unique feature of H&R sway bars are the machined like forged ends that are adjustable for fine tuning. H&R sway bars come equipped with exclusive Urethane Teflon composite bushings featuring a molded in fabric