[carguy55]

Originally Posted by Mountain

The FEA bushing looks to be better for track driving than the FE4 in that the FEA bushing is stiffer, but also the design allows a bit easier rotation of the joint. The FEA link’s inner bushing is keyed-in (and molded in place) to the outer bushing, allowing the inner bushing to rotate some but still controlling lateral/fore-aft movements. The FE4 bushing is an entire molded piece, with, from what I can tell, fluid at the “void” areas and incorporating rubber inserts to help control lateral/fore-aft movements.

https://youtube.com/shorts/7kFo7iVQhVg?feature=share

Thanks for the info