Tanabe TSB092R Sustec 22mm Diameter Rear Sway Bar for 2004-2006 Subaru Impreza WRX STI GDB Sustec stabilizer is extremely lightweight and rigid, and is engineered to provide the favored neutral balance, which can eliminate factory suspension settings for understeer Bolts onto stock mounting locations and uses the factory endlinks and fitment for trouble free usage No adjustment necessary Solid bushings included on most kits Full chromemoly construction