I'm sure this is old news among the veteran brickers, but all I can say is...wow. To be honest, my old bushings weren't really excessively worn. I can clearly see what Volvo was thinking when they designed the OEM bushing. They're designed to absorb a certain degree of torque before transfering it to the chassis, thus giving a more comfortable ride. The urethane version transfers the torque without delay. Definately a worth while upgrade.