How do these bushings compare to urethane bushings? These are rubber bushings with a higher durometer than the factory ones. In terms of hardness they are comparable to most aftermarket urethane bushings. However, urethane and rubber bushings operate differently. Urethane bushings rotate in a sliding motion around the center sleeve and require lubrication. If the lubrication washes out or dries up the bushing may begin to make noise and can wear prematurely. A rubber bushing, on the other hand, has no sliding motion under normal conditions, but instead the material twists or distorts around the center sleeve to allow the suspension arm to articulate. A rubber bushing will not wear unless the material deteriorates. Exposure to heat, chemicals, ozone, UV light, etc. can break down the rubber.

How difficult are they to install? Installation requires the use of a hydraulic press. Some bushings use an outer metal sleeve that may need to be split in order to press the bushing out of its bore. Installing the new bushings without damaging them may require the fabrication of special tools. It is a job best left to a skilled professional.