Genuine Toyota Parts PTR11-47010 Plus Sway Bar Solid steel bar bent to match the natural movement of the Prius beam axle Water- and dust-resistant OEM-style ball links added to sway bar system to allow the beam axle to flex as the factory intended for toe and camber change during heavy cornering; offers longer life than spherical rod ends or heim jointsand have much less compliance than polyurethane or rubber TRD badging adds prestige, Durability tested to Toyota specifications Provides a flatter, more solid cornering stance, Limits body lean without adding harshness to the ride Requires Replacement End Links Service Kit PTR11-47011 for sway bar installation (not included)