Agency Power has heavy-duty rear sway bar links available for the 2004 to 2007 Subaru STI and 2005-2007 Legacy GT. The links come in red and are lasered with the AP logo.What are sway bar links? Sway bar links replace your factory urethane or thin metal links, which connect the sway bar to the cars chassis. Weak factory end links mean flex in suspension components and loss in handling.Why use Agency Power end links? Reducing suspension flex means improved handling. The factory end links are sufficient for the factory car. However, vehicles with more power, more handling needs, and more aggressive drivers are recommended to switch the end links. They fit the stock or aftermarket sway bars to reinforce and strengthen the suspension setup. Providing a rigid and improved feel.They utilize a spherical bearing for best handling and reduced wear compared to urethane applications. Also included are full stainless steel metric hardware for easy installation and longevity. All Agency Power products come with a LIMITED LIFETIME warranty when you fill out this form HERE.