Enthuspec Solid Subframe Bushings are a must for those S-chassis owners tracking their car. Eliminating the movement in the rear subframe dramaticly improves response and handling. More importantly, these bushings raise the subrame up to the chassis to allow proper positioning of suspension arms on lowered cars. Having the suspension arms at a proper angle in relation to the ride height is very important in the suspension dynamics during wheel travel. Designed for racing purposes where noise and vibration is a trade off for performance.