We aren't too sure why the competition is getting away with selling sub-par completely exposed heim joint end links. Sure they are rated for the strength and SOME are adjustable, but let's think about real world applications. Dirt, grime, rocks, water, salt and other things you'll find on a day to day basis, splashing all over the bottom of your car - these are all bad news for a completely exposed joint unless you don't mind the clunking sound. Another common concern is binding, these were designed to support more travel than can be produced with the Miata suspension system so there is absolutely NO binding! These Whiteline performance sway bar links utilizing a heavy duty steel ball joint ends that adjust & rotate to any angular combination. Eliminate sway bar preload via the light weight aluminium bodies provide 25mm center to center length adjustment.