Quote: The spherical bearings I use are designed for peak axial loads of 20kn (2000 kg's. This means about 8 G's on a typical car). The bearings are aircraft grade and cost $140 each The bearings form the largest part of the costs of the tops.

There are cheaper bearings used but they are not designed for the axial loads they are subjected to in a strut top.

I am looking at doing an HD urethane style top to lower costs from the current $600/pair.