This E46 Rear subframe bushing set is perfect for your race car’s suspension. It is made from a solid rod of polyurethane, providing superior durability and strength. The hardness is 90 shore, which is the ideal hardness for high performance race cars. This set is designed to provide maximum stability and reduce wheel hop while still providing a smooth ride. With this set, your race car will be able to handle the toughest of tracks with ease.