Replaces rear subframe bushings with solid mounts. Raises subframe and differential upwards to flatten the angle of the control arms and axles on lowered cars. Improves handling, helps prevent wheel hop, Reduces stress on CV joints. ~ lifetime manufacturers defect warranty ~ 6061 aluminum ~ CNC precision turned ~ Gold anodized finish ~ Requires complete removal of rubber subframe bushings and pressed in sleeves. Solid bushings slide in from the bottom. Not a press fit. We suggest a light coat of epoxy to hold them in during subframe installation.