As cars get older the rubber in the suspension bushings decays from use, thermal cycling, and natural rubber degradation. With all Evo 8/9s being over 15 years old now we constantly see more and more of them with suspension bushings that are worn out, so we highly recommend refreshing them to not only restore performance, but improve it.
Stock rubber control arm bushings give a disconnected and mushy feel to the front suspension, especially when worn, as the bushing deflects more than it should. You get sloppy steering, vibrations, and poor handling which makes the car feel unstable. These urethane bushings are stiffer than stock rubber and will not deflect as much. This helps keep the alignment in check with less variation. The car feels more planted and confidence-inspiring. And a lifetime warranty means you'll likely never have to pay for another bushing ever again!