Sorry, I wasn't clear. The dimensions I gave above are for the rear sway bar only. I don't know about dimensions for the front sway bar. The S4 rear sway bar is 20 mm.

Welcome to the site from another mid aged fart! Am sure with your background as soon as you get up to speed here u will be helping us all out :-). Lots of good, unselfish folks who share audi "intelligence" information on this forum. Enjoyed your post!

Thanks for the welcome, my head is still swimming from the stuff I am eager to learn.

Keep it shiny side up!
Vince