Really Excellent Sway Bar Links
 

This type of link is very good on Miatas. I had to cut the length down for my car though. However I now have length adjustment in a link that should last pretty much forever. It's not unusual for the popular style rod end with aluminum center to clunk at the balls and gall at the threads, causing issues not long after an install…some replace these more than once a season for example.

PowerGrids use THK ends, which are used for OE applications by many car companies. Basically they stay quiet and don't wear out. No side effects. The adjuster is plated steel while the bodies are alloy (zinc?)...some antisieze wouldn't hurt for cars that see street use hence water/salt. Personally I tend to use just one adjustable link per sway bar, provide I can get a suitable length OE style for the other link.

I shortened mine so that they can hit an 85 mm minimum length. Single shear only.

http://www.pbase.com/sjmarcy/image/128297640.jpg
http://www.pbase.com/sjmarcy/image/128250035.jpg