Add extra Performance with these SPT Springs manufactured by Eibach for Subaru. The set only come in a matched set of four. These SPT Springs will go great with the WRX/STi Performance Struts or you can add them to your factory suspension. The new high-quality steel springs lower the stance of the 2.5RS by approximately 1" for better, road hugging center of gravity. By installing the kit, that includes two fronts and rear springs, you'll demonstratively improve the handling performance and vehicle responsiveness. These springs reduce vehicle squat during acceleration, body roll while cornering and excessive nose-diving when braking.