I have moog poly endlinks on my doorman front sway bar. They are the black coated ones with white bushings. Extremely firm and feel wonderful. I love them. Only problem is that they tend to snap in half when cornering very aggressively. I have tried overtightening and undertightening them with the same result. The only way I can keep them together is to replace the center bolt with a hardened bolt from the hardware store. Obviously its fairly violent when it happens and the car becomes very loose which can be a tad dangerous while cornering at 70+. Ask me how I know.

Anyone else have this issue? I just snapped a week old endlink today.