The iSWEEP UPGRADE SPRING was engineered to work flawlessly with factory OE shock absorbers while dropping the height of the vehicle. The design concept for these springs was to bring out the best qualities of the electronically controlled DCC suspension struts and to set the most ideal ride height. When compared to other “lowering springs”, iSWEEP emphasized on easing the micro-shock vibrations and improving the rebound characteristics that actually makes spirited driving fun, whether on the highway or twisted mountain roads. This new concept is remarkably harmonious to seamlessly function with the dynamic characteristics of the DCC suspension where switching dampening modes are very frequent.