The Synergy Manufacturing Upper Control Arm Bushing has been designed to be a maintenance free, grease less design. It is also self-centering with 30° of misalignment.
This bushing features an outer soft durometer that acts as a bushing cushion, and flex material. The inner hard durometer lining acts as the bearing surface which allows a free floating inner sleeve to rotate, which provides a maintenance free “zero bind” bushing.
The internal bushing ring has been designed to separate the inner and outer materials to prevent the inner sleeve from gaping during extreme flex.
These are sold with the inner sleeve installed, and can work with after-market control arms using OEM Clevite style lower control arm bushings.