I saw someone posted this link the other day: http://www.ath-hinsberger.com/indexf.htm. I emailed them about shipping to the US, and they gave me the link to their US distributor Shark Racing. Unfortunately, Shark racing is a Hyundai and Mitsu body kit company. However, I emailed them about selling/importing ATH's Mazda products.

ALL PROTEGE PEOPLE UNITE!!!! Please go to www.sharkracing.com and email them about selling Mazda products!!!! ATH's prices are VERY good and their products are definitely unique.
Hell, help a bro out!!! I want those BG-F sideskirts

 

I sent shark an e mail hope it helps